Insight into the Narrow Structure in η Photoproduction on the Neutron from Helicity-Dependent Cross Sections

Witthauer, L.; Dieterle, M.; Abt, S.; Achenbach, P.; Afzal, F.; Ahmed, Z.; Annand, J. R.  M.; Arends, H. J.; Bashkanov, M.; Beck, R.; Biroth, M.; Borisov, N. S.; Braghieri, A.; Briscoe, W. J.; Cividini, F.; Costanza, S.; Collicott, C.; Denig, A.; Downie, E. J.; Drexler, P.; Ferretti-Bondy, M. I.; Gardner, S.; Garni, S.; Glazier, D. I.; Glowa, D.; Gradl, W.; Günther, M.; Gurevich, G. M.; Hamilton, D.; Hornidge, D.; Huber, G. M.; Käser, A.; Kashevarov, V. L.; Kay, S.; Keshelashvili, I.; Kondratiev, R.; Korolija, M.; Krusche, B.; Lazarev, A. B.; Linturi, J. M.; Lisin, V.; Livingston, K.; Lutterer, S.; MacGregor, I. J.  D.; Mancell, J.; Manley, D. M.; Martel, P. P.; Metag, V.; Meyer, W.; Miskimen, R.; Mornacchi, E.; Mushkarenkov, A.; Neganov, A. B.; Neiser, A.; Oberle, M.; Ostrick, M.; Otte, P. B.; Paudyal, D.; Pedroni, P.; Polonski, A.; Prakhov, S. N.; Rajabi, A.; Reicherz, G.; Ron, G.; Rostomyan, T.; Sarty, A.; Sfienti, C.; Sikora, M. H.; Sokhoyan, V.; Spieker, K.; Steffen, O.; Strakovski, I. I.; Strub, Th.; Supek, I.; Thiel, A.; Thiel, M.; Thomas, A.; Unverzagt, M.; Usov, Yu. A.; Wagner, S.; Walford, N. K.; Watts, D. P.; Werthmüller, D.; Wettig, J.; Wolfes, M.; Zana, L.

doi:10.1103/PhysRevLett.117.132502

Title: Insight into the Narrow Structure in $η$ Photoproduction on the Neutron from Helicity-Dependent Cross Sections

Abstract

Here, the double polarization observable E and the helicity dependent cross sections σ_1/2 and σ_3/2 were measured for η photoproduction from quasifree protons and neutrons. The circularly polarized tagged photon beam of the A2 experiment at the Mainz MAMI accelerator was used in combination with a longitudinally polarized deuterated butanol target. The almost 4π detector setup of the Crystal Ball and TAPS is ideally suited to detect the recoil nucleons and the decay photons from η→2γ and η→3π⁰. The results show that the narrow structure previously observed in η photoproduction from the neutron is only apparent in σ_1/2 and hence, most likely related to a spin-1/2 amplitude. Nucleon resonances that contribute to this partial wave in η production are only N1/2^– (S11) and N1/2⁺ (P₁₁). Furthermore, the extracted Legendre coefficients of the angular distributions for σ1/2 are in good agreement with recent reaction model predictions assuming a narrow resonance in the P₁₁ wave as the origin of this structure.

Authors:: Witthauer, L.; Dieterle, M.; Abt, S.; Achenbach, P.; Afzal, F.; Ahmed, Z.; Annand, J. R. M.; Arends, H. J.; Bashkanov, M.; Beck, R.; Biroth, M.; Borisov, N. S.; Braghieri, A.; Briscoe, W. J.; Cividini, F.; Costanza, S.; Collicott, C.; Denig, A.; Downie, E. J.; Drexler, P. more »« less

Publication Date:: Thu Sep 22 00:00:00 EDT 2016

Research Org.:: Univ. of Massachusetts, Amherst, MA (United States); George Washington Univ., Washington, DC (United States)

Sponsoring Org.:: USDOE Office of Science (SC), Nuclear Physics (NP)

Contributing Org.:: A2 Collaboration at MAMI

OSTI Identifier:: 1437121

Alternate Identifier(s):: OSTI ID: 1326128; OSTI ID: 1439890

Grant/Contract Number:: FG02-88ER40415; FG02-99-ER41110; FG02-01ER41194; SC0016583

Resource Type:: Accepted Manuscript

Journal Name:: Physical Review Letters

Additional Journal Information:: Journal Volume: 117; Journal Issue: 13; Journal ID: ISSN 0031-9007

Publisher:: American Physical Society (APS)

Country of Publication:: United States

Language:: English

Subject:: 73 NUCLEAR PHYSICS AND RADIATION PHYSICS; pion photoproduction

Citation Formats


                    Witthauer, L., Dieterle, M., Abt, S., Achenbach, P., Afzal, F., Ahmed, Z., Annand, J. R.  M., Arends, H. J., Bashkanov, M., Beck, R., Biroth, M., Borisov, N. S., Braghieri, A., Briscoe, W. J., Cividini, F., Costanza, S., Collicott, C., Denig, A., Downie, E. J., Drexler, P., Ferretti-Bondy, M. I., Gardner, S., Garni, S., Glazier, D. I., Glowa, D., Gradl, W., Günther, M., Gurevich, G. M., Hamilton, D., Hornidge, D., Huber, G. M., Käser, A., Kashevarov, V. L., Kay, S., Keshelashvili, I., Kondratiev, R., Korolija, M., Krusche, B., Lazarev, A. B., Linturi, J. M., Lisin, V., Livingston, K., Lutterer, S., MacGregor, I. J.  D., Mancell, J., Manley, D. M., Martel, P. P., Metag, V., Meyer, W., Miskimen, R., Mornacchi, E., Mushkarenkov, A., Neganov, A. B., Neiser, A., Oberle, M., Ostrick, M., Otte, P. B., Paudyal, D., Pedroni, P., Polonski, A., Prakhov, S. N., Rajabi, A., Reicherz, G., Ron, G., Rostomyan, T., Sarty, A., Sfienti, C., Sikora, M. H., Sokhoyan, V., Spieker, K., Steffen, O., Strakovski, I. I., Strub, Th., Supek, I., Thiel, A., Thiel, M., Thomas, A., Unverzagt, M., Usov, Yu. A., Wagner, S., Walford, N. K., Watts, D. P., Werthmüller, D., Wettig, J., Wolfes, M., and Zana, L. Insight into the Narrow Structure in η Photoproduction on the Neutron from Helicity-Dependent Cross Sections.  United States: N. p., 2016. 
Web.  doi:10.1103/PhysRevLett.117.132502.

Copy to clipboard


                    Witthauer, L., Dieterle, M., Abt, S., Achenbach, P., Afzal, F., Ahmed, Z., Annand, J. R.  M., Arends, H. J., Bashkanov, M., Beck, R., Biroth, M., Borisov, N. S., Braghieri, A., Briscoe, W. J., Cividini, F., Costanza, S., Collicott, C., Denig, A., Downie, E. J., Drexler, P., Ferretti-Bondy, M. I., Gardner, S., Garni, S., Glazier, D. I., Glowa, D., Gradl, W., Günther, M., Gurevich, G. M., Hamilton, D., Hornidge, D., Huber, G. M., Käser, A., Kashevarov, V. L., Kay, S., Keshelashvili, I., Kondratiev, R., Korolija, M., Krusche, B., Lazarev, A. B., Linturi, J. M., Lisin, V., Livingston, K., Lutterer, S., MacGregor, I. J.  D., Mancell, J., Manley, D. M., Martel, P. P., Metag, V., Meyer, W., Miskimen, R., Mornacchi, E., Mushkarenkov, A., Neganov, A. B., Neiser, A., Oberle, M., Ostrick, M., Otte, P. B., Paudyal, D., Pedroni, P., Polonski, A., Prakhov, S. N., Rajabi, A., Reicherz, G., Ron, G., Rostomyan, T., Sarty, A., Sfienti, C., Sikora, M. H., Sokhoyan, V., Spieker, K., Steffen, O., Strakovski, I. I., Strub, Th., Supek, I., Thiel, A., Thiel, M., Thomas, A., Unverzagt, M., Usov, Yu. A., Wagner, S., Walford, N. K., Watts, D. P., Werthmüller, D., Wettig, J., Wolfes, M., & Zana, L. Insight into the Narrow Structure in η Photoproduction on the Neutron from Helicity-Dependent Cross Sections.  United States.  https://doi.org/10.1103/PhysRevLett.117.132502

Copy to clipboard


                    Witthauer, L., Dieterle, M., Abt, S., Achenbach, P., Afzal, F., Ahmed, Z., Annand, J. R.  M., Arends, H. J., Bashkanov, M., Beck, R., Biroth, M., Borisov, N. S., Braghieri, A., Briscoe, W. J., Cividini, F., Costanza, S., Collicott, C., Denig, A., Downie, E. J., Drexler, P., Ferretti-Bondy, M. I., Gardner, S., Garni, S., Glazier, D. I., Glowa, D., Gradl, W., Günther, M., Gurevich, G. M., Hamilton, D., Hornidge, D., Huber, G. M., Käser, A., Kashevarov, V. L., Kay, S., Keshelashvili, I., Kondratiev, R., Korolija, M., Krusche, B., Lazarev, A. B., Linturi, J. M., Lisin, V., Livingston, K., Lutterer, S., MacGregor, I. J.  D., Mancell, J., Manley, D. M., Martel, P. P., Metag, V., Meyer, W., Miskimen, R., Mornacchi, E., Mushkarenkov, A., Neganov, A. B., Neiser, A., Oberle, M., Ostrick, M., Otte, P. B., Paudyal, D., Pedroni, P., Polonski, A., Prakhov, S. N., Rajabi, A., Reicherz, G., Ron, G., Rostomyan, T., Sarty, A., Sfienti, C., Sikora, M. H., Sokhoyan, V., Spieker, K., Steffen, O., Strakovski, I. I., Strub, Th., Supek, I., Thiel, A., Thiel, M., Thomas, A., Unverzagt, M., Usov, Yu. A., Wagner, S., Walford, N. K., Watts, D. P., Werthmüller, D., Wettig, J., Wolfes, M., and Zana, L. Thu .  
"Insight into the Narrow Structure in η Photoproduction on the Neutron from Helicity-Dependent Cross Sections".  United States.  https://doi.org/10.1103/PhysRevLett.117.132502.  https://www.osti.gov/servlets/purl/1437121.

Copy to clipboard


                    
@article{osti_1437121,

  title        = {Insight into the Narrow Structure in η Photoproduction on the Neutron from Helicity-Dependent Cross Sections},

  author       = {Witthauer, L. and Dieterle, M. and Abt, S. and Achenbach, P. and Afzal, F. and Ahmed, Z. and Annand, J. R.  M. and Arends, H. J. and Bashkanov, M. and Beck, R. and Biroth, M. and Borisov, N. S. and Braghieri, A. and Briscoe, W. J. and Cividini, F. and Costanza, S. and Collicott, C. and Denig, A. and Downie, E. J. and Drexler, P. and Ferretti-Bondy, M. I. and Gardner, S. and Garni, S. and Glazier, D. I. and Glowa, D. and Gradl, W. and Günther, M. and Gurevich, G. M. and Hamilton, D. and Hornidge, D. and Huber, G. M. and Käser, A. and Kashevarov, V. L. and Kay, S. and Keshelashvili, I. and Kondratiev, R. and Korolija, M. and Krusche, B. and Lazarev, A. B. and Linturi, J. M. and Lisin, V. and Livingston, K. and Lutterer, S. and MacGregor, I. J.  D. and Mancell, J. and Manley, D. M. and Martel, P. P. and Metag, V. and Meyer, W. and Miskimen, R. and Mornacchi, E. and Mushkarenkov, A. and Neganov, A. B. and Neiser, A. and Oberle, M. and Ostrick, M. and Otte, P. B. and Paudyal, D. and Pedroni, P. and Polonski, A. and Prakhov, S. N. and Rajabi, A. and Reicherz, G. and Ron, G. and Rostomyan, T. and Sarty, A. and Sfienti, C. and Sikora, M. H. and Sokhoyan, V. and Spieker, K. and Steffen, O. and Strakovski, I. I. and Strub, Th. and Supek, I. and Thiel, A. and Thiel, M. and Thomas, A. and Unverzagt, M. and Usov, Yu. A. and Wagner, S. and Walford, N. K. and Watts, D. P. and Werthmüller, D. and Wettig, J. and Wolfes, M. and Zana, L.},

  abstractNote = {Here, the double polarization observable E and the helicity dependent cross sections σ1/2 and σ3/2 were measured for η photoproduction from quasifree protons and neutrons. The circularly polarized tagged photon beam of the A2 experiment at the Mainz MAMI accelerator was used in combination with a longitudinally polarized deuterated butanol target. The almost 4π detector setup of the Crystal Ball and TAPS is ideally suited to detect the recoil nucleons and the decay photons from η→2γ and η→3π0. The results show that the narrow structure previously observed in η photoproduction from the neutron is only apparent in σ1/2 and hence, most likely related to a spin-1/2 amplitude. Nucleon resonances that contribute to this partial wave in η production are only N1/2– (S11) and N1/2+ (P11). Furthermore, the extracted Legendre coefficients of the angular distributions for σ1/2 are in good agreement with recent reaction model predictions assuming a narrow resonance in the P11 wave as the origin of this structure.},

  doi          = {10.1103/PhysRevLett.117.132502},

  journal      = {Physical Review Letters},

  number       = 13,

  volume       = 117,

  place        = {United States},

  year         = {Thu Sep 22 00:00:00 EDT 2016},

  month        = {Thu Sep 22 00:00:00 EDT 2016}

}

Copy to clipboard

Journal Article:

Free Publicly Available Full Text

Accepted Manuscript (Publisher)

Accepted Manuscript (DOE)

Publisher's Version of Record

https://doi.org/10.1103/PhysRevLett.117.132502

Other availability

Search WorldCat to find libraries that may hold this journal

Citation Metrics:

Cited by: 31 works

Citation information provided by
Web of Science

Figures / Tables:

FIG. 1: Double polarization observable E for γp → pη (left-hand side) and γn → nη (right-hand side). Gray shaded areas: systematic uncertainties. Curves: predictions from MAID (green, dashed) and BnGa (model based on S₁₁ interference)(black, solid line).

All figures and tables (3 total)

Save / Share:

Export Metadata

Save to My Library

Works referenced in this record:

Production of <mml:math altimg="si194.gif" display="inline" overflow="scroll" xmlns:xocs="http://www.elsevier.com/xml/xocs/dtd" xmlns:xs="http://www.w3.org/2001/XMLSchema" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://www.elsevier.com/xml/ja/dtd" xmlns:ja="http://www.elsevier.com/xml/ja/dtd" xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:tb="http://www.elsevier.com/xml/common/table/dtd" xmlns:sb="http://www.elsevier.com/xml/common/struct-bib/dtd" xmlns:ce="http://www.elsevier.com/xml/common/dtd" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:cals="http://www.elsevier.com/xml/common/cals/dtd" xmlns:sa="http://www.elsevier.com/xml/common/struct-aff/dtd"><mml:mi>η</mml:mi></mml:math> and <mml:math altimg="si195.gif" display="inline" overflow="scroll" xmlns:xocs="http://www.elsevier.com/xml/xocs/dtd" xmlns:xs="http://www.w3.org/2001/XMLSchema" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://www.elsevier.com/xml/ja/dtd" xmlns:ja="http://www.elsevier.com/xml/ja/dtd" xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:tb="http://www.elsevier.com/xml/common/table/dtd" xmlns:sb="http://www.elsevier.com/xml/common/struct-bib/dtd" xmlns:ce="http://www.elsevier.com/xml/common/dtd" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:cals="http://www.elsevier.com/xml/common/cals/dtd" xmlns:sa="http://www.elsevier.com/xml/common/struct-aff/dtd"><mml:msup><mml:mrow><mml:mi>η</mml:mi></mml:mrow><mml:mrow><mml:mo>′</mml:mo></mml:mrow></mml:msup></mml:math> mesons on nucleons and nuclei
journal, January 2015

Krusche, B.; Wilkin, C.
Progress in Particle and Nuclear Physics, Vol. 80
DOI: 10.1016/j.ppnp.2014.10.001

Narrow Resonance at E _γ = 1020 MeV in the D (γ,η) p n Reaction
journal, January 2007

Miyahara, F.; Kasagi, J.; Nakabayashi, T.
Progress of Theoretical Physics Supplement, Vol. 168
DOI: 10.1143/PTPS.168.90

Quasi-free photoproduction of η-mesons off 3He nuclei
journal, December 2013

Witthauer, L.; Werthmüller, D.; Keshelashvili, I.
The European Physical Journal A, Vol. 49, Issue 12
DOI: 10.1140/epja/i2013-13154-0

Quasifree photoproduction of $η$ mesons off protons and neutrons
journal, July 2014

Werthmüller, D.; Witthauer, L.; Keshelashvili, I.
Physical Review C, Vol. 90, Issue 1
DOI: 10.1103/PhysRevC.90.015205

Multichannel parametrization of $π N$ scattering amplitudes and extraction of resonance parameters
journal, November 2012

Shrestha, M.; Manley, D. M.
Physical Review C, Vol. 86, Issue 5
DOI: 10.1103/PhysRevC.86.055203

Photoproduction of $η$ mesons within a coupled-channels $K$ -matrix approach
journal, December 2008

Shyam, R.; Scholten, O.
Physical Review C, Vol. 78, Issue 6
DOI: 10.1103/PhysRevC.78.065201

A new frozen-spin target for 4π particle detection
journal, November 1999

Bradtke, Ch; Dutz, H.; Peschel, H.
Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, Vol. 436, Issue 3
DOI: 10.1016/S0168-9002(99)00383-6

Response of TAPS to monochromatic photons with energies between 45 and 790 MeV
journal, July 1994

Gabler, A. R.; Döring, W.; Fuchs, M.
Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, Vol. 346, Issue 1-2
DOI: 10.1016/0168-9002(94)90701-3

Study of non-strange baryon resonances with meson photoproduction
journal, January 2003

Krusche, B.; Schadmand, S.
Progress in Particle and Nuclear Physics, Vol. 51, Issue 2
DOI: 10.1016/S0146-6410(03)90005-6

Review of Particle Physics
journal, August 2014

Olive, K. A.
Chinese Physics C, Vol. 38, Issue 9
DOI: 10.1088/1674-1137/38/9/090001

On photoexcitation of baryon antidecuplet
journal, December 2003

Polyakov, M. V.; Rathke, A.
The European Physical Journal A, Vol. 18, Issue 4
DOI: 10.1140/epja/i2003-10029-y

Nonstrange and other flavor partners of the exotic $Θ^{+}$ baryon
journal, March 2004

Arndt, R. A.; Azimov, Ya. I.; Polyakov, M. V.
Physical Review C, Vol. 69, Issue 3
DOI: 10.1103/PhysRevC.69.035208

The Mainz microtron facility MAMI
journal, January 1990

Walcher, Th.
Progress in Particle and Nuclear Physics, Vol. 24
DOI: 10.1016/0146-6410(90)90016-W

Photoproduction of η -mesons on the deuteron above S11(1535) in the presence of a narrow P11(1670) -resonance
journal, June 2007

Fix, A.; Tiator, L.; Polyakov, M. V.
The European Physical Journal A, Vol. 32, Issue 3
DOI: 10.1140/epja/i2007-10385-6

On the cross section ratio <mml:math altimg="si1.gif" overflow="scroll" xmlns:xocs="http://www.elsevier.com/xml/xocs/dtd" xmlns:xs="http://www.w3.org/2001/XMLSchema" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://www.elsevier.com/xml/ja/dtd" xmlns:ja="http://www.elsevier.com/xml/ja/dtd" xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:tb="http://www.elsevier.com/xml/common/table/dtd" xmlns:sb="http://www.elsevier.com/xml/common/struct-bib/dtd" xmlns:ce="http://www.elsevier.com/xml/common/dtd" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:cals="http://www.elsevier.com/xml/common/cals/dtd"><mml:msub><mml:mi>σ</mml:mi><mml:mi>n</mml:mi></mml:msub><mml:mo stretchy="false">/</mml:mo><mml:msub><mml:mi>σ</mml:mi><mml:mi>p</mml:mi></mml:msub></mml:math> in η photoproduction
journal, January 2010

Döring, M.; Nakayama, K.
Physics Letters B, Vol. 683, Issue 2-3
DOI: 10.1016/j.physletb.2009.12.029

Narrow Structure in the Excitation Function of $η$ Photoproduction off the Neutron
journal, December 2013

Werthmüller, D.; Witthauer, L.; Keshelashvili, I.
Physical Review Letters, Vol. 111, Issue 23
DOI: 10.1103/PhysRevLett.111.232001

Evidence for narrow resonant structures at $W \approx 1.68 GeV$ and $W \approx 1.72 GeV$ in real Compton scattering off the proton
journal, April 2015

Kuznetsov, V.; Mammoliti, F.; Bellini, V.
Physical Review C, Vol. 91, Issue 4
DOI: 10.1103/PhysRevC.91.042201

Comment on “Evidence for narrow resonant structures at $W \approx 1.68$ GeV and $W \approx 1.72$ GeV in real Compton scattering off the proton”
journal, December 2015

Werthmüller, D.; Witthauer, L.; Glazier, D. I.
Physical Review C, Vol. 92, Issue 6
DOI: 10.1103/PhysRevC.92.069801

Interference phenomena in the JP = 1/2− wave in η photoproduction
journal, June 2015

Anisovich, A. V.; Klempt, E.; Krusche, B.
The European Physical Journal A, Vol. 51, Issue 6
DOI: 10.1140/epja/i2015-15072-5

An isobar model for η photo- and electroproduction on the nucleon
journal, March 2002

Chiang, Wen-Tai; Yang, Shin Nan; Tiator, Lothar
Nuclear Physics A, Vol. 700, Issue 1-2
DOI: 10.1016/S0375-9474(01)01325-2

Photon and Electron Polarization in High-Energy Bremsstrahlung and Pair Production with Screening
journal, May 1959

Olsen, Haakon; Maximon, L. C.
Physical Review, Vol. 114, Issue 3
DOI: 10.1103/PhysRev.114.887

Evidence for a narrow structure at <mml:math altimg="si1.gif" overflow="scroll" xmlns:xocs="http://www.elsevier.com/xml/xocs/dtd" xmlns:xs="http://www.w3.org/2001/XMLSchema" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://www.elsevier.com/xml/ja/dtd" xmlns:ja="http://www.elsevier.com/xml/ja/dtd" xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:tb="http://www.elsevier.com/xml/common/table/dtd" xmlns:sb="http://www.elsevier.com/xml/common/struct-bib/dtd" xmlns:ce="http://www.elsevier.com/xml/common/dtd" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:cals="http://www.elsevier.com/xml/common/cals/dtd"><mml:mi>W</mml:mi><mml:mo>∼</mml:mo><mml:mn>1.68</mml:mn><mml:mtext> GeV</mml:mtext></mml:math> in η photoproduction off the neutron
journal, March 2007

Kuznetsov, V.; Churikova, S.; Gervino, G.
Physics Letters B, Vol. 647, Issue 1
DOI: 10.1016/j.physletb.2007.01.041

Quasi-free photoproduction of η-mesons off the deuteron
journal, August 2011

Jaegle, I.; Krusche, B.; Anisovich, A. V.
The European Physical Journal A, Vol. 47, Issue 8
DOI: 10.1140/epja/i2011-11089-0

Complete experiments in pseudoscalar photoproduction
journal, September 1975

Barker, I. S.; Donnachie, A.; Storrow, J. K.
Nuclear Physics B, Vol. 95, Issue 2
DOI: 10.1016/0550-3213(75)90049-8

Experimental study of the $γ p \to η p$ reaction with the Crystal Ball detector at the Mainz Microtron (MAMI-C)
journal, September 2010

McNicoll, E. F.; Prakhov, S.; Strakovsky, I. I.
Physical Review C, Vol. 82, Issue 3
DOI: 10.1103/PhysRevC.82.035208

Quasifree Photoproduction of $η$ Mesons off the Neutron
journal, June 2008

Jaegle, I.; Mertens, T.; Anisovich, A. V.
Physical Review Letters, Vol. 100, Issue 25
DOI: 10.1103/PhysRevLett.100.252002

Upgrade of the Glasgow photon tagging spectrometer for Mainz MAMI-C
journal, June 2008

McGeorge, J. C.; Kellie, J. D.; Annand, J. R. M.
The European Physical Journal A, Vol. 37, Issue 1
DOI: 10.1140/epja/i2007-10606-0

η photoproduction in the resonance energy region
journal, June 2007

Shklyar, V.; Lenske, H.; Mosel, U.
Physics Letters B, Vol. 650, Issue 2-3
DOI: 10.1016/j.physletb.2007.05.005

A new <mml:math altimg="si1.gif" overflow="scroll" xmlns:xocs="http://www.elsevier.com/xml/xocs/dtd" xmlns:xs="http://www.w3.org/2001/XMLSchema" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://www.elsevier.com/xml/ja/dtd" xmlns:ja="http://www.elsevier.com/xml/ja/dtd" xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:tb="http://www.elsevier.com/xml/common/table/dtd" xmlns:sb="http://www.elsevier.com/xml/common/struct-bib/dtd" xmlns:ce="http://www.elsevier.com/xml/common/dtd" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:cals="http://www.elsevier.com/xml/common/cals/dtd"><mml:msup><mml:mi>N</mml:mi><mml:mo>∗</mml:mo></mml:msup><mml:mo stretchy="false">(</mml:mo><mml:mn>1675</mml:mn><mml:mo stretchy="false">)</mml:mo></mml:math> resonance in the <mml:math altimg="si2.gif" overflow="scroll" xmlns:xocs="http://www.elsevier.com/xml/xocs/dtd" xmlns:xs="http://www.w3.org/2001/XMLSchema" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://www.elsevier.com/xml/ja/dtd" xmlns:ja="http://www.elsevier.com/xml/ja/dtd" xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:tb="http://www.elsevier.com/xml/common/table/dtd" xmlns:sb="http://www.elsevier.com/xml/common/struct-bib/dtd" xmlns:ce="http://www.elsevier.com/xml/common/dtd" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:cals="http://www.elsevier.com/xml/common/cals/dtd"><mml:mi>γ</mml:mi><mml:mi>N</mml:mi><mml:mo>→</mml:mo><mml:mi>η</mml:mi><mml:mi>N</mml:mi></mml:math> reaction
journal, May 2006

Choi, Ki-Seok; Nam, Seung-Il; Hosaka, Atsushi
Physics Letters B, Vol. 636, Issue 5
DOI: 10.1016/j.physletb.2006.03.058

Partial-wave analysis of the $π^{-} p$ $\to$ $η n$ and $π^{-} p \to K^{0} Λ$ reactions
journal, October 2012

Shrestha, M.; Manley, D. M.
Physical Review C, Vol. 86, Issue 4
DOI: 10.1103/PhysRevC.86.045204

First measurement of the helicity asymmetry E in photoproduction on the proton
journal, April 2016

Senderovich, I.; Morrison, B. T.; Dugger, M.
Physics Letters B, Vol. 755
DOI: 10.1016/j.physletb.2016.01.044

Measurement of $K^{-} \vec{p} η Λ$ near threshold
journal, October 2001

Starostin, A.; Nefkens, B. M. K.; Berger, E.
Physical Review C, Vol. 64, Issue 5
DOI: 10.1103/PhysRevC.64.055205

Works referencing / citing this record:

N* Photoexcitation Results from Mainz
journal, July 2018

Sokhoyan, Vahe
Few-Body Systems, Vol. 59, Issue 6
DOI: 10.1007/s00601-018-1440-5

Figures / Tables found in this record:

FIG. 1 (p. 3)

FIG. 2 (p. 3)

FIG. 3 (p. 4)

Figures/Tables have been extracted from DOE-funded journal article accepted manuscripts.

Similar Records in DOE PAGES and OSTI.GOV collections:

Helicity-dependent cross sections and double-polarization observable $E$ in $η$ photoproduction from quasifree protons and neutrons

Journal Article Witthauer, L. ; Dieterle, M. ; Abt, S. ; ... - Physical Review. C

Precise helicity-dependent cross sections and the double-polarization observable E were measured for η photoproduction from quasifree protons and neutrons bound in the deuteron. The η → 2γ and η → 3π⁰ → 6γ decay modes were used to optimize the statistical quality of the data and to estimate systematic uncertainties. The measurement used the A2 detector setup at the tagged photon beam of the electron accelerator MAMI in Mainz. A longitudinally polarized deuterated butanol target was used in combination with a circularly polarized photon beam from bremsstrahlung of a longitudinally polarized electron beam. The reaction products were detected with themore »« less
Cited by 21
https://doi.org/10.1103/PhysRevC.95.055201
Helicity-Dependent Cross Sections for the Photoproduction of $π^{0}$ Pairs from Nucleons

Journal Article Dieterle, M. ; Witthauer, L. ; Fix, A. ; ... - Physical Review Letters

The double-polarization observable E and helicity-dependent cross sections σ_1/2, σ_3/2 have been measured for the photoproduction of π⁰ pairs off quasifree protons and neutrons at the Mainz MAMI accelerator with the Crystal Ball/TAPS setup. A circularly polarized photon beam was produced by bremsstrahlung from longitudinally polarized electrons and impinged on a longitudinally polarized deuterated butanol target. The reaction products were detected with an almost 4π covering calorimeter. The results reveal for the first time the helicity- and isospin-dependent structure of the γN → Nπ⁰π⁰ reaction.They are compared to predictions from reaction models in view of nucleon resonance contributions and alsomore »« less
Cited by 4
https://doi.org/10.1103/PhysRevLett.125.062001
Measurement of the decay $η^{'} \to π^{0} π^{0} η$ at MAMI

Journal Article Adlarson, P. ; Afzal, F. ; Ahmed, Z. ; ... - Physical Review. D.

An experimental study of the η' → π⁰π⁰η → 6more »« less
Cited by 6
https://doi.org/10.1103/PhysRevD.98.012001
Photoproduction of $π^{0}$ mesons off protons and neutrons in the second and third nucleon resonance regions

Journal Article Dieterle, M. ; Werthmüller, D. ; Abt, S. ; ... - Physical Review C

Background: Photoproduction of mesons off quasi-free nucleons bound in the deuteron allows to study the elec- tromagnetic excitation spectrum of the neutron and the isospin structure of the excitation of nucleon resonances. The database for such reactions is much more sparse than for free proton targets. Purpose: Study experimentally single π0 photoproduction off quasi-free nucleons from the deuteron. Investigate nuclear effects by a comparison of the results for free protons and quasi-free protons. Use the quasi-free neutron data (corrected for nuclear effects) to test the predictions of reaction models and partial wave analysis (PWA) for γn → nπ⁰ derived frommore »« less
Cited by 10
https://doi.org/10.1103/PhysRevC.97.065205

Full Text Available
First measurement of helicity-dependent cross sections in π0η photoproduction from quasi-free nucleons

Journal Article Käser, A. ; Dieterle, M. ; Witthauer, L. ; ... - Physics Letters. B

The helicity-dependent cross sections for the photoproduction of π⁰η pairs have been measured for the first time. The experiment was performed at the tagged photon facility of the Mainz MAMI accelerator with the combined Crystal Ball – TAPS calorimeter. The experiment used a polarized deuterated butanol target and a circularly polarized photon beam. This arrangement allowed the σ_1/2 (photon and target spin antiparallel) and σ_3/2 (parallel spins) components to be measured for quasi-free production of π⁰η pairs off protons and neutrons. The main finding is that the two helicity components contribute identically, within uncertainties, for both participant protons and neutrons. The absolute couplings for protons and neutrons are also identical. This means that nucleon resonances contributing to this reaction in the investigated energy range have almost equal electromagnetic helicity couplings, Amore »« less
Cited by 11
https://doi.org/10.1016/j.physletb.2018.10.006

Similar Records

Title: Insight into the Narrow Structure in η Photoproduction on the Neutron from Helicity-Dependent Cross Sections

Abstract

Citation Formats

Figures / Tables:

Narrow Resonance at E γ = 1020 MeV in the D (γ,η) p n Reaction journal, January 2007

Quasi-free photoproduction of η-mesons off 3He nuclei journal, December 2013

Quasifree photoproduction of η mesons off protons and neutrons journal, July 2014

Multichannel parametrization of π N scattering amplitudes and extraction of resonance parameters journal, November 2012

Photoproduction of η mesons within a coupled-channels K -matrix approach journal, December 2008

A new frozen-spin target for 4π particle detection journal, November 1999

Response of TAPS to monochromatic photons with energies between 45 and 790 MeV journal, July 1994

Study of non-strange baryon resonances with meson photoproduction journal, January 2003

Review of Particle Physics journal, August 2014

On photoexcitation of baryon antidecuplet journal, December 2003

Nonstrange and other flavor partners of the exotic Θ + baryon journal, March 2004

The Mainz microtron facility MAMI journal, January 1990

Photoproduction of η -mesons on the deuteron above S11(1535) in the presence of a narrow P11(1670) -resonance journal, June 2007

Narrow Structure in the Excitation Function of η Photoproduction off the Neutron journal, December 2013

Evidence for narrow resonant structures at W ≈ 1.68 GeV and W ≈ 1.72 GeV in real Compton scattering off the proton journal, April 2015

Comment on “Evidence for narrow resonant structures at W ≈ 1.68 GeV and W ≈ 1.72 GeV in real Compton scattering off the proton” journal, December 2015

Interference phenomena in the JP = 1/2− wave in η photoproduction journal, June 2015

An isobar model for η photo- and electroproduction on the nucleon journal, March 2002

Photon and Electron Polarization in High-Energy Bremsstrahlung and Pair Production with Screening journal, May 1959

Quasi-free photoproduction of η-mesons off the deuteron journal, August 2011

Complete experiments in pseudoscalar photoproduction journal, September 1975

Experimental study of the γ p → η p reaction with the Crystal Ball detector at the Mainz Microtron (MAMI-C) journal, September 2010

Quasifree Photoproduction of η Mesons off the Neutron journal, June 2008

Upgrade of the Glasgow photon tagging spectrometer for Mainz MAMI-C journal, June 2008

η photoproduction in the resonance energy region journal, June 2007

Partial-wave analysis of the π − p → η n and π − p → K 0 Λ reactions journal, October 2012

First measurement of the helicity asymmetry E in photoproduction on the proton journal, April 2016

Measurement of K − p → η Λ near threshold journal, October 2001

N* Photoexcitation Results from Mainz journal, July 2018

Title: Insight into the Narrow Structure in $η$ Photoproduction on the Neutron from Helicity-Dependent Cross Sections

Narrow Resonance at E _γ = 1020 MeV in the D (γ,η) p n Reaction
journal, January 2007

Quasi-free photoproduction of η-mesons off 3He nuclei
journal, December 2013

Quasifree photoproduction of $η$ mesons off protons and neutrons
journal, July 2014

Multichannel parametrization of $π N$ scattering amplitudes and extraction of resonance parameters
journal, November 2012

Photoproduction of $η$ mesons within a coupled-channels $K$ -matrix approach
journal, December 2008

A new frozen-spin target for 4π particle detection
journal, November 1999

Response of TAPS to monochromatic photons with energies between 45 and 790 MeV
journal, July 1994

Study of non-strange baryon resonances with meson photoproduction
journal, January 2003

Review of Particle Physics
journal, August 2014

On photoexcitation of baryon antidecuplet
journal, December 2003

Nonstrange and other flavor partners of the exotic $Θ^{+}$ baryon
journal, March 2004

The Mainz microtron facility MAMI
journal, January 1990

Photoproduction of η -mesons on the deuteron above S11(1535) in the presence of a narrow P11(1670) -resonance
journal, June 2007

Narrow Structure in the Excitation Function of $η$ Photoproduction off the Neutron
journal, December 2013

Evidence for narrow resonant structures at $W \approx 1.68 GeV$ and $W \approx 1.72 GeV$ in real Compton scattering off the proton
journal, April 2015

Comment on “Evidence for narrow resonant structures at $W \approx 1.68$ GeV and $W \approx 1.72$ GeV in real Compton scattering off the proton”
journal, December 2015

Interference phenomena in the JP = 1/2− wave in η photoproduction
journal, June 2015

An isobar model for η photo- and electroproduction on the nucleon
journal, March 2002

Photon and Electron Polarization in High-Energy Bremsstrahlung and Pair Production with Screening
journal, May 1959

Quasi-free photoproduction of η-mesons off the deuteron
journal, August 2011

Complete experiments in pseudoscalar photoproduction
journal, September 1975

Experimental study of the $γ p \to η p$ reaction with the Crystal Ball detector at the Mainz Microtron (MAMI-C)
journal, September 2010

Quasifree Photoproduction of $η$ Mesons off the Neutron
journal, June 2008

Upgrade of the Glasgow photon tagging spectrometer for Mainz MAMI-C
journal, June 2008

η photoproduction in the resonance energy region
journal, June 2007

Partial-wave analysis of the $π^{-} p$ $\to$ $η n$ and $π^{-} p \to K^{0} Λ$ reactions
journal, October 2012

First measurement of the helicity asymmetry E in photoproduction on the proton
journal, April 2016

Measurement of $K^{-} \vec{p} η Λ$ near threshold
journal, October 2001

N* Photoexcitation Results from Mainz
journal, July 2018