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

Journal Article · Thu Sep 22 00:00:00 EDT 2016 · Physical Review Letters

DOI:https://doi.org/10.1103/PhysRevLett.117.132502· OSTI ID:1437121

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 »

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.

View Accepted Manuscript (DOE)

View Accepted Manuscript (Publisher)

Cite

Export

Save

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

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

Contributing Organization:: A2 Collaboration at MAMI

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

OSTI ID:: 1437121

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

Journal Information:: Physical Review Letters, Vol. 117, Issue 13; ISSN 0031-9007

Publisher:: American Physical Society (APS)Copyright Statement

Country of Publication:: United States

Language:: English

Citation Metrics:

Cited by: 31 works

Citation information provided by
Web of Science

References (32)

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 Krusche, B.; Wilkin, C. Progress in Particle and Nuclear Physics, Vol. 80 https://doi.org/10.1016/j.ppnp.2014.10.001	journal	January 2015
Narrow Resonance at E _γ = 1020 MeV in the D (γ,η) p n Reaction Miyahara, F.; Kasagi, J.; Nakabayashi, T. Progress of Theoretical Physics Supplement, Vol. 168 https://doi.org/10.1143/PTPS.168.90	journal	January 2007
Quasi-free photoproduction of η-mesons off 3He nuclei Witthauer, L.; Werthmüller, D.; Keshelashvili, I. The European Physical Journal A, Vol. 49, Issue 12 https://doi.org/10.1140/epja/i2013-13154-0	journal	December 2013
Quasifree photoproduction of $η$ mesons off protons and neutrons Werthmüller, D.; Witthauer, L.; Keshelashvili, I. Physical Review C, Vol. 90, Issue 1 https://doi.org/10.1103/PhysRevC.90.015205	journal	July 2014
Multichannel parametrization of $π N$ scattering amplitudes and extraction of resonance parameters Shrestha, M.; Manley, D. M. Physical Review C, Vol. 86, Issue 5 https://doi.org/10.1103/PhysRevC.86.055203	journal	November 2012
Photoproduction of $η$ mesons within a coupled-channels $K$ -matrix approach Shyam, R.; Scholten, O. Physical Review C, Vol. 78, Issue 6 https://doi.org/10.1103/PhysRevC.78.065201	journal	December 2008
A new frozen-spin target for 4π particle detection 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 https://doi.org/10.1016/S0168-9002(99)00383-6	journal	November 1999
Response of TAPS to monochromatic photons with energies between 45 and 790 MeV 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 https://doi.org/10.1016/0168-9002(94)90701-3	journal	July 1994
Study of non-strange baryon resonances with meson photoproduction Krusche, B.; Schadmand, S. Progress in Particle and Nuclear Physics, Vol. 51, Issue 2 https://doi.org/10.1016/S0146-6410(03)90005-6	journal	January 2003
Review of Particle Physics Olive, K. A. Chinese Physics C, Vol. 38, Issue 9 https://doi.org/10.1088/1674-1137/38/9/090001	journal	August 2014
On photoexcitation of baryon antidecuplet Polyakov, M. V.; Rathke, A. The European Physical Journal A, Vol. 18, Issue 4 https://doi.org/10.1140/epja/i2003-10029-y	journal	December 2003
Nonstrange and other flavor partners of the exotic $Θ^{+}$ baryon Arndt, R. A.; Azimov, Ya. I.; Polyakov, M. V. Physical Review C, Vol. 69, Issue 3 https://doi.org/10.1103/PhysRevC.69.035208	journal	March 2004
The Mainz microtron facility MAMI Walcher, Th. Progress in Particle and Nuclear Physics, Vol. 24 https://doi.org/10.1016/0146-6410(90)90016-W	journal	January 1990
Photoproduction of η -mesons on the deuteron above S11(1535) in the presence of a narrow P11(1670) -resonance Fix, A.; Tiator, L.; Polyakov, M. V. The European Physical Journal A, Vol. 32, Issue 3 https://doi.org/10.1140/epja/i2007-10385-6	journal	June 2007
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 Döring, M.; Nakayama, K. Physics Letters B, Vol. 683, Issue 2-3 https://doi.org/10.1016/j.physletb.2009.12.029	journal	January 2010
Narrow Structure in the Excitation Function of $η$ Photoproduction off the Neutron Werthmüller, D.; Witthauer, L.; Keshelashvili, I. Physical Review Letters, Vol. 111, Issue 23 https://doi.org/10.1103/PhysRevLett.111.232001	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 Kuznetsov, V.; Mammoliti, F.; Bellini, V. Physical Review C, Vol. 91, Issue 4 https://doi.org/10.1103/PhysRevC.91.042201	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” Werthmüller, D.; Witthauer, L.; Glazier, D. I. Physical Review C, Vol. 92, Issue 6 https://doi.org/10.1103/PhysRevC.92.069801	journal	December 2015
Interference phenomena in the JP = 1/2− wave in η photoproduction Anisovich, A. V.; Klempt, E.; Krusche, B. The European Physical Journal A, Vol. 51, Issue 6 https://doi.org/10.1140/epja/i2015-15072-5	journal	June 2015
An isobar model for η photo- and electroproduction on the nucleon Chiang, Wen-Tai; Yang, Shin Nan; Tiator, Lothar Nuclear Physics A, Vol. 700, Issue 1-2 https://doi.org/10.1016/S0375-9474(01)01325-2	journal	March 2002
Photon and Electron Polarization in High-Energy Bremsstrahlung and Pair Production with Screening Olsen, Haakon; Maximon, L. C. Physical Review, Vol. 114, Issue 3 https://doi.org/10.1103/PhysRev.114.887	journal	May 1959
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 Kuznetsov, V.; Churikova, S.; Gervino, G. Physics Letters B, Vol. 647, Issue 1 https://doi.org/10.1016/j.physletb.2007.01.041	journal	March 2007
Quasi-free photoproduction of η-mesons off the deuteron Jaegle, I.; Krusche, B.; Anisovich, A. V. The European Physical Journal A, Vol. 47, Issue 8 https://doi.org/10.1140/epja/i2011-11089-0	journal	August 2011
Complete experiments in pseudoscalar photoproduction Barker, I. S.; Donnachie, A.; Storrow, J. K. Nuclear Physics B, Vol. 95, Issue 2 https://doi.org/10.1016/0550-3213(75)90049-8	journal	September 1975
Experimental study of the $γ p \to η p$ reaction with the Crystal Ball detector at the Mainz Microtron (MAMI-C) McNicoll, E. F.; Prakhov, S.; Strakovsky, I. I. Physical Review C, Vol. 82, Issue 3 https://doi.org/10.1103/PhysRevC.82.035208	journal	September 2010
Quasifree Photoproduction of $η$ Mesons off the Neutron Jaegle, I.; Mertens, T.; Anisovich, A. V. Physical Review Letters, Vol. 100, Issue 25 https://doi.org/10.1103/PhysRevLett.100.252002	journal	June 2008
Upgrade of the Glasgow photon tagging spectrometer for Mainz MAMI-C McGeorge, J. C.; Kellie, J. D.; Annand, J. R. M. The European Physical Journal A, Vol. 37, Issue 1 https://doi.org/10.1140/epja/i2007-10606-0	journal	June 2008
η photoproduction in the resonance energy region Shklyar, V.; Lenske, H.; Mosel, U. Physics Letters B, Vol. 650, Issue 2-3 https://doi.org/10.1016/j.physletb.2007.05.005	journal	June 2007
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 Choi, Ki-Seok; Nam, Seung-Il; Hosaka, Atsushi Physics Letters B, Vol. 636, Issue 5 https://doi.org/10.1016/j.physletb.2006.03.058	journal	May 2006
Partial-wave analysis of the $π^{-} p$ $\to$ $η n$ and $π^{-} p \to K^{0} Λ$ reactions Shrestha, M.; Manley, D. M. Physical Review C, Vol. 86, Issue 4 https://doi.org/10.1103/PhysRevC.86.045204	journal	October 2012
First measurement of the helicity asymmetry E in photoproduction on the proton Senderovich, I.; Morrison, B. T.; Dugger, M. Physics Letters B, Vol. 755 https://doi.org/10.1016/j.physletb.2016.01.044	journal	April 2016
Measurement of $K^{-} \vec{p} η Λ$ near threshold Starostin, A.; Nefkens, B. M. K.; Berger, E. Physical Review C, Vol. 64, Issue 5 https://doi.org/10.1103/PhysRevC.64.055205	journal	October 2001

Cited By (1)

N* Photoexcitation Results from Mainz Sokhoyan, Vahe Few-Body Systems, Vol. 59, Issue 6 https://doi.org/10.1007/s00601-018-1440-5	journal	July 2018

Figures / Tables (3)

FIG. 1(p. 3)

FIG. 2(p. 3)

FIG. 3(p. 4)

Similar Records

Helicity-dependent cross sections and double-polarization observable

E

η

photoproduction from quasifree protons and neutrons

Journal Article · Mon May 01 00:00:00 EDT 2017 · Physical Review. C · OSTI ID:1437121

Witthauer, L.; Dieterle, M.; Abt, S.; +84 more

Helicity-Dependent Cross Sections for the Photoproduction of

π^{0}

Pairs from Nucleons

Journal Article · Wed Aug 05 00:00:00 EDT 2020 · Physical Review Letters · OSTI ID:1437121

Dieterle, M.; Witthauer, L.; Fix, A.; +85 more

Measurement of the decay

η^{'} \to π^{0} π^{0} η

at MAMI

Journal Article · Tue Jul 03 00:00:00 EDT 2018 · Physical Review. D. · OSTI ID:1437121

Adlarson, P.; Afzal, F.; Ahmed, Z.; +76 more

Related Subjects

73 NUCLEAR PHYSICS AND RADIATION PHYSICS
pion photoproduction

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

Citation Formats