First measurement of the polarization observable E and helicity-dependent cross sections in single π 0 photoproduction from quasi-free nucleons

Dieterle, M.; Witthauer, L.; Cividini, F.; Abt, S.; Achenbach, P.; Adlarson, P.; Afzal, F.; Ahmed, Z.; Akondi, C. S.; Annand, J. R. M.; Arends, H. J.; Bashkanov, M.; Beck, R.; Biroth, M.; Borisov, N. S.; Braghieri, A.; Briscoe, W. J.; 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.; Strakovsky, 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:10.1016/j.physletb.2017.04.079

Title: First measurement of the polarization observable E and helicity-dependent cross sections in single π 0 photoproduction from quasi-free nucleons

Journal Article · Sat Jul 01 00:00:00 EDT 2017 · Physics Letters. B

DOI:https://doi.org/10.1016/j.physletb.2017.04.079· OSTI ID:1356438

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

The double-polarization observable Eand the helicity-dependent cross sections σ1/2and σ3/2have been measured for the first time for single π0photoproduction from protons and neutrons bound in the deuteron at the electron accelerator facility MAMI in Mainz, Germany. The experiment used a circularly polarized photon beam and a longitudinally polarized deuterated butanol target. The reaction products, recoil nucleons and decay photons from the π0 meson were detected with the Crystal Ball and TAPS electromagnetic calorimeters. Effects from nuclear Fermi motion were removed by a kinematic reconstruction of the π0N final state. A comparison to data measured with a free proton target showed that the absolute scale of the cross sections is significantly modified by nuclear final-state interaction (FSI) effects. However, there is no significant effect on the asymmetry E since the σ1/2 and σ3/2 components appear to be influenced in a similar way. Thus, the best approximation of the two helicity-dependent cross sections for the free neutron is obtained by combining the asymmetry E measured with quasi-free neutrons and the unpolarized cross section corrected for FSI effects under the assumption that the FSI effects are similar for neutrons and protons.

View Journal Article

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), Office of Nuclear Physics Research Division; USDOE Office of Science (SC), Nuclear Physics (NP)

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

OSTI ID:: 1356438

Alternate ID(s):: OSTI ID: 1424752; OSTI ID: 1439813

Journal Information:: Physics Letters. B, Journal Name: Physics Letters. B Vol. 770 Journal Issue: C; ISSN 0370-2693

Publisher:: ElsevierCopyright Statement

Country of Publication:: Netherlands

Language:: English

Citation Metrics:

Cited by: 23 works

Citation information provided by
Web of Science

References (51)

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
First measurement of the Σ beam asymmetry in η photoproduction on the neutron Fantini, A.; Di Salvo, R.; Bartalini, O. Physical Review C, Vol. 78, Issue 1 https://doi.org/10.1103/PhysRevC.78.015203	journal	July 2008
Measurement of the beam-helicity asymmetry I⊙ in the photoproduction of $ \pi^{0}$ $ \pi^{\pm}$ pairs off protons and off neutrons Oberle, M.; Ahrens, J.; Annand, J. R. M. The European Physical Journal A, Vol. 50, Issue 3 https://doi.org/10.1140/epja/i2014-14054-5	journal	March 2014
Unitary isobar model --MAID2007 Drechsel, D.; Kamalov, S. S.; Tiator, L. The European Physical Journal A, Vol. 34, Issue 1 https://doi.org/10.1140/epja/i2007-10490-6	journal	October 2007
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
Measurement of the ${}^{1}H (γ⃗, p⃗) π^{0}$ Reaction Using a Novel Nucleon Spin Polarimeter Sikora, M. H.; Watts, D. P.; Glazier, D. I. Physical Review Letters, Vol. 112, Issue 2 https://doi.org/10.1103/PhysRevLett.112.022501	journal	January 2014
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
Completeness rules for spin observables in pseudoscalar meson photoproduction Chiang, Wen-Tai; Tabakin, Frank Physical Review C, Vol. 55, Issue 4 https://doi.org/10.1103/PhysRevC.55.2054	journal	April 1997
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
Neutral-PionPhotoproduction off Protons in the Energy Range $0.3 G e V < E_{γ} < 3 G e V$ Bartholomy, O.; Credé, V.; van Pee, H. Physical Review Letters, Vol. 94, Issue 1 https://doi.org/10.1103/PhysRevLett.94.012003	journal	January 2005
Photoproduction of $ \eta{^\prime}$ -mesons off the deuteron Jaegle, I.; Mertens, T.; Fix, A. The European Physical Journal A, Vol. 47, Issue 1 https://doi.org/10.1140/epja/i2011-11011-x	journal	January 2011
Well-Established Nucleon Resonances Revisited by Double-Polarization Measurements Thiel, A.; Anisovich, A. V.; Bayadilov, D. Physical Review Letters, Vol. 109, Issue 10 https://doi.org/10.1103/PhysRevLett.109.102001	journal	September 2012
Photoproduction of $π^{0}$ Mesons off Neutrons in the Nucleon Resonance Region Dieterle, M.; Keshelashvili, I.; Ahrens, J. Physical Review Letters, Vol. 112, Issue 14 https://doi.org/10.1103/PhysRevLett.112.142001	journal	April 2014
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
Measurement of the beam asymmetry $Σ$ in the forward direction for $γ⃗ p \to p π^{0}$ Sparks, N.; Crede, V.; Anisovich, A. V. Physical Review C, Vol. 81, Issue 6 https://doi.org/10.1103/PhysRevC.81.065210	journal	June 2010
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
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
Single and double πo-photoproduction from the deuteron Krusche, B.; Ahrens, J.; Beck, R. The European Physical Journal A, Vol. 6, Issue 3 https://doi.org/10.1007/s100500050349	journal	November 1999
Photoproduction of mesons off nuclei Krusche, B. The European Physical Journal Special Topics, Vol. 198, Issue 1 https://doi.org/10.1140/epjst/e2011-01491-2	journal	September 2011
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
Photoproduction of neutral pions off protons Crede, V.; Sparks, N.; Wilson, A. Physical Review C, Vol. 84, Issue 5 https://doi.org/10.1103/PhysRevC.84.055203	journal	November 2011
Photoproduction of $\eta$ $\pi$ pairs off nucleons and deuterons Käser, A.; Müller, F.; Ahrens, J. The European Physical Journal A, Vol. 52, Issue 9 https://doi.org/10.1140/epja/i2016-16272-1	journal	September 2016
Parametrization of the deuteron wave function of the Paris NN potential Lacombe, M.; Loiseau, B.; Mau, R. Vinh Physics Letters B, Vol. 101, Issue 3 https://doi.org/10.1016/0370-2693(81)90659-6	journal	May 1981
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
Linearly polarised photon beams at ELSA and measurement of the beam asymmetry in $ \pi^{0}_{}$ photoproduction off the proton Elsner, D.; Bantes, B.; Bartholomy, O. The European Physical Journal A, Vol. 39, Issue 3 https://doi.org/10.1140/epja/i2008-10708-1	journal	February 2009
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
Excited state baryon spectroscopy from lattice QCD Edwards, Robert G.; Dudek, Jozef J.; Richards, David G. Physical Review D, Vol. 84, Issue 7 https://doi.org/10.1103/PhysRevD.84.074508	journal	October 2011
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
Photoproduction of πmesons off protons from the Δ(1232) region to Eγ = 3 GeV van Pee, H.; Bartholomy, O.; Crede, V. The European Physical Journal A, Vol. 31, Issue 1 https://doi.org/10.1140/epja/i2006-10160-3	journal	January 2007
The MAMI source of polarized electrons Aulenbacher, K.; Nachtigall, Ch; Andresen, H. G. Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, Vol. 391, Issue 3 https://doi.org/10.1016/S0168-9002(97)00528-7	journal	June 1997
Measurement of $ \Sigma$ beam asymmetry in $ \pi^{0}_{}$ photoproduction off the neutron in the second and third resonances region⋆ Di Salvo, R.; Fantini, A.; Mandaglio, G. The European Physical Journal A, Vol. 42, Issue 2 https://doi.org/10.1140/epja/i2009-10870-x	journal	October 2009
Helicity-dependent cross sections and double-polarization observable $E$ in $η$ photoproduction from quasifree protons and neutrons Witthauer, L.; Dieterle, M.; Abt, S. Physical Review C, Vol. 95, Issue 5 https://doi.org/10.1103/PhysRevC.95.055201	journal	May 2017
The 1.5GeV harmonic double-sided microtron at Mainz University Kaiser, K. -H.; Aulenbacher, K.; Chubarov, O. Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, Vol. 593, Issue 3 https://doi.org/10.1016/j.nima.2008.05.018	journal	August 2008
Insight into the Narrow Structure in $η$ Photoproduction on the Neutron from Helicity-Dependent Cross Sections Witthauer, L.; Dieterle, M.; Abt, S. Physical Review Letters, Vol. 117, Issue 13 https://doi.org/10.1103/PhysRevLett.117.132502	journal	September 2016
Effective densities and polarizations of the targets for the GDH-experiments at MAMI and ELSA Rohlof, Ch.; Dutz, H. Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, Vol. 526, Issue 1-2 https://doi.org/10.1016/j.nima.2004.03.162	journal	June 2004
Photoproduction of pions and properties of baryon resonances from a Bonn-Gatchina partial-wave analysis Anisovich, A. V.; Klempt, E.; Nikonov, V. A. The European Physical Journal A, Vol. 44, Issue 2 https://doi.org/10.1140/epja/i2010-10950-x	journal	April 2010
Measurement of the beam-helicity asymmetry <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" xmlns:sa="http://www.elsevier.com/xml/common/struct-aff/dtd"><mml:msup><mml:mrow><mml:mi>I</mml:mi></mml:mrow><mml:mrow><mml:mo>⊙</mml:mo></mml:mrow></mml:msup></mml:math> in the photoproduction of <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" xmlns:sa="http://www.elsevier.com/xml/common/struct-aff/dtd"><mml:msup><mml:mrow><mml:mi>π</mml:mi></mml:mrow><mml:mrow><mml:mn>0</mml:mn></mml:mrow></mml:msup></mml:math>-pairs off the proton and off the neutron Oberle, M.; Krusche, B.; Ahrens, J. Physics Letters B, Vol. 721, Issue 4-5 https://doi.org/10.1016/j.physletb.2013.03.021	journal	April 2013
First Measurement of the Helicity Asymmetry for $γ p \to p π^{0}$ in the Resonance Region Gottschall, M.; Anisovich, A. V.; Bantes, B. Physical Review Letters, Vol. 112, Issue 1 https://doi.org/10.1103/PhysRevLett.112.012003	journal	January 2014
The isospin structure of photoproduction of πη pairs from the nucleon in the threshold region Käser, A.; Ahrens, J.; Annand, J. R. M. Physics Letters B, Vol. 748 https://doi.org/10.1016/j.physletb.2015.07.007	journal	September 2015
Photoproduction of $\eta$ η mesons from the neutron: Cross sections and double polarization observable E Witthauer, L.; Dieterle, M.; Afzal, F. The European Physical Journal A, Vol. 53, Issue 3 https://doi.org/10.1140/epja/i2017-12247-0	journal	March 2017
A unitary isobar model for pion photo- and electroproduction on the proton up to 1 GeV Drechsel, D.; Hanstein, O.; Kamalov, S. S. Nuclear Physics A, Vol. 645, Issue 1 https://doi.org/10.1016/S0375-9474(98)00572-7	journal	January 1999
Analysis of pion photoproduction data Arndt, R. A.; Briscoe, W. J.; Strakovsky, I. I. Physical Review C, Vol. 66, Issue 5 https://doi.org/10.1103/PhysRevC.66.055213	journal	November 2002
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
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
Measurement of πphotoproduction on the proton from 550 to 1500 MeV at GRAAL Bartalini, O.; Bellini, V.; Bocquet, J. P. The European Physical Journal A, Vol. 26, Issue 3 https://doi.org/10.1140/epja/i2005-10191-2	journal	December 2005
$π^{0}$ photoproduction on the proton for photon energies from 0.675 to 2.875 GeV Dugger, M.; Ritchie, B. G.; Ball, J. P. Physical Review C, Vol. 76, Issue 2 https://doi.org/10.1103/PhysRevC.76.025211	journal	August 2007
Geant4—a simulation toolkit Agostinelli, S.; Allison, J.; Amako, K. Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, Vol. 506, Issue 3 https://doi.org/10.1016/S0168-9002(03)01368-8	journal	July 2003
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
Photoproduction of ω mesons off protons and neutrons Dietz, F.; Metag, V.; Anisovich, A. V. The European Physical Journal A, Vol. 51, Issue 1 https://doi.org/10.1140/epja/i2015-15006-3	journal	January 2015
Photoproduction of $ \pi^{0}$ -pairs off protons and off neutrons Dieterle, M.; Oberle, M.; Ahrens, J. The European Physical Journal A, Vol. 51, Issue 11 https://doi.org/10.1140/epja/i2015-15142-8	journal	November 2015
On the extraction of cross sections for π0 and η photoproduction off neutrons from deuteron data Tarasov, V. E.; Briscoe, W. J.; Dieterle, M. Physics of Atomic Nuclei, Vol. 79, Issue 2 https://doi.org/10.1134/S1063778816020186	journal	March 2016

Similar Records

Photoproduction of

π^{0}

mesons off protons and neutrons in the second and third nucleon resonance regions

Journal Article · Thu Jun 21 00:00:00 EDT 2018 · Physical Review C · OSTI ID:1356438

Dieterle, M.; Werthmüller, D.; Abt, S.; +81 more

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

Journal Article · Thu Nov 01 00:00:00 EDT 2018 · Physics Letters. B · OSTI ID:1356438

Käser, A.; Dieterle, M.; Witthauer, L.; +80 more

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 · OSTI ID:1356438

Witthauer, L.; Dieterle, M.; Abt, S.; +83 more

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
73 NUCLEAR PHYSICS AND RADIATION PHYSICS
meson photoproduction

Title: First measurement of the polarization observable E and helicity-dependent cross sections in single π 0 photoproduction from quasi-free nucleons

Citation Formats

References (51)

Similar Records

Related Subjects