T and F asymmetries in pi(0) photoproduction on the proton

A2 Collaboration Mami; J. R. M. Annand; H. J. Arends; R. Beck; N. Borisov; A. Braghieri; W. J. Briscoe; S. Cherepnya; C. Collicott; S. Costanza; E. J. Downie; M. Dieterle; A. Fix; L. V. Fil'kov; S. Garni; D. I. Glazier; W. Gradl; G. Gurevich; P. Hall Barrientos; D. Hamilton; D. Hornidge; D. Howdle; G. M. Huber; V. L. Kashevarov; I. Keshelashvili; R. Kondratiev; M. Korolija; B. Krusche; A. Lazarev; V. Lisin; K. Livingston; I. J. D. MacGregor; J. Mancel; D. M. Manley; P. P. Martel; E. F. McNicoll; W. Meyer; D. G. Middleton; R. Miskimen; A. Mushkarenkov; A. Neganov; A. Nikolaev; M. Oberle; H. Ortega; M. Ostrick; P. Ott; P. B. Otte; B. Oussena; P. Pedroni; S. Schumann; D. P. Watts

doi:10.1103/PhysRevC.93.055209

T and F asymmetries in pi(0) photoproduction on the proton

A2 Collaboration Mami, J. R. M. Annand^*, H. J. Arends, R. Beck, N. Borisov, A. Braghieri, W. J. Briscoe, S. Cherepnya, C. Collicott, S. Costanza, E. J. Downie, M. Dieterle, A. Fix, L. V. Fil'kov, S. Garni, D. I. Glazier, W. Gradl, G. Gurevich, P. Hall Barrientos, D. HamiltonD. Hornidge, D. Howdle, G. M. Huber, V. L. Kashevarov, I. Keshelashvili, R. Kondratiev, M. Korolija, B. Krusche, A. Lazarev, V. Lisin, K. Livingston, I. J. D. MacGregor, J. Mancel, D. M. Manley, P. P. Martel, E. F. McNicoll, W. Meyer, D. G. Middleton, R. Miskimen, A. Mushkarenkov, A. Neganov, A. Nikolaev, M. Oberle, H. Ortega, M. Ostrick, P. Ott, P. B. Otte, B. Oussena, P. Pedroni, S. Schumann, D. P. Watts

^*Corresponding author for this work

School of Physics and Astronomy

Research output: Contribution to journal › Article › peer-review

Abstract

The gamma p -> pi(0) p reaction was studied at laboratory photon energies from 425 to 1445 MeV with a transversely polarized target and a longitudinally polarized beam. The beam-target asymmetry F was measured for the first time and new high precision data for the target asymmetry T were obtained. The experiment was performed at the photon tagging facility of the Mainz Microtron (MAMI) using the Crystal Ball and TAPS photon spectrometers. The polarized cross sections were expanded in terms of associated Legendre functions and compared to recent predictions from several partial-wave analyses. The impact of the new data on our understanding of the underlying partial-wave amplitudes and baryon resonance contributions is discussed.

Original language	English
Article number	055209
Number of pages	10
Journal	Physical Review C
Volume	93
Issue number	5
DOIs	https://doi.org/10.1103/PhysRevC.93.055209
Publication status	Published - 31 May 2016

Keywords / Materials (for Non-textual outputs)

POLARIZED TARGET ASYMMETRY
NEUTRAL PION-PHOTOPRODUCTION
TAGGED PHOTON SPECTROMETER
GAMMA-P
MAMI
MICROTRON
TAPS

Access to Document

10.1103/PhysRevC.93.055209

Cite this

A2 Collaboration Mami, Annand, J. R. M., Arends, H. J., Beck, R., Borisov, N., Braghieri, A., Briscoe, W. J., Cherepnya, S., Collicott, C., Costanza, S., Downie, E. J., Dieterle, M., Fix, A., Fil'kov, L. V., Garni, S., Glazier, D. I., Gradl, W., Gurevich, G., Barrientos, P. H., ... Watts, D. P. (2016). T and F asymmetries in pi(0) photoproduction on the proton. Physical Review C, 93(5), Article 055209. https://doi.org/10.1103/PhysRevC.93.055209

@article{b74c1f944bbe4701957c68abc2fe2401,

title = "T and F asymmetries in pi(0) photoproduction on the proton",

abstract = "The gamma p -> pi(0) p reaction was studied at laboratory photon energies from 425 to 1445 MeV with a transversely polarized target and a longitudinally polarized beam. The beam-target asymmetry F was measured for the first time and new high precision data for the target asymmetry T were obtained. The experiment was performed at the photon tagging facility of the Mainz Microtron (MAMI) using the Crystal Ball and TAPS photon spectrometers. The polarized cross sections were expanded in terms of associated Legendre functions and compared to recent predictions from several partial-wave analyses. The impact of the new data on our understanding of the underlying partial-wave amplitudes and baryon resonance contributions is discussed.",

keywords = "POLARIZED TARGET ASYMMETRY, NEUTRAL PION-PHOTOPRODUCTION, TAGGED PHOTON SPECTROMETER, GAMMA-P, MAMI, MICROTRON, TAPS",

author = "{A2 Collaboration Mami} and Annand, {J. R. M.} and Arends, {H. J.} and R. Beck and N. Borisov and A. Braghieri and Briscoe, {W. J.} and S. Cherepnya and C. Collicott and S. Costanza and Downie, {E. J.} and M. Dieterle and A. Fix and Fil'kov, {L. V.} and S. Garni and Glazier, {D. I.} and W. Gradl and G. Gurevich and Barrientos, {P. Hall} and D. Hamilton and D. Hornidge and D. Howdle and Huber, {G. M.} and Kashevarov, {V. L.} and I. Keshelashvili and R. Kondratiev and M. Korolija and B. Krusche and A. Lazarev and V. Lisin and K. Livingston and MacGregor, {I. J. D.} and J. Mancel and Manley, {D. M.} and Martel, {P. P.} and McNicoll, {E. F.} and W. Meyer and Middleton, {D. G.} and R. Miskimen and A. Mushkarenkov and A. Neganov and A. Nikolaev and M. Oberle and H. Ortega and M. Ostrick and P. Ott and Otte, {P. B.} and B. Oussena and P. Pedroni and S. Schumann and Watts, {D. P.}",

year = "2016",

month = may,

day = "31",

doi = "10.1103/PhysRevC.93.055209",

language = "English",

volume = "93",

journal = "Physical Review C",

issn = "2469-9985",

publisher = "American Physical Society",

number = "5",

}

A2 Collaboration Mami, Annand, JRM, Arends, HJ, Beck, R, Borisov, N, Braghieri, A, Briscoe, WJ, Cherepnya, S, Collicott, C, Costanza, S, Downie, EJ, Dieterle, M, Fix, A, Fil'kov, LV, Garni, S, Glazier, DI, Gradl, W, Gurevich, G, Barrientos, PH, Hamilton, D, Hornidge, D, Howdle, D, Huber, GM, Kashevarov, VL, Keshelashvili, I, Kondratiev, R, Korolija, M, Krusche, B, Lazarev, A, Lisin, V, Livingston, K, MacGregor, IJD, Mancel, J, Manley, DM, Martel, PP, McNicoll, EF, Meyer, W, Middleton, DG, Miskimen, R, Mushkarenkov, A, Neganov, A, Nikolaev, A, Oberle, M, Ortega, H, Ostrick, M, Ott, P, Otte, PB, Oussena, B, Pedroni, P, Schumann, S & Watts, DP 2016, 'T and F asymmetries in pi(0) photoproduction on the proton', Physical Review C, vol. 93, no. 5, 055209. https://doi.org/10.1103/PhysRevC.93.055209

TY - JOUR

T1 - T and F asymmetries in pi(0) photoproduction on the proton

AU - A2 Collaboration Mami

AU - Annand, J. R. M.

AU - Arends, H. J.

AU - Beck, R.

AU - Borisov, N.

AU - Braghieri, A.

AU - Briscoe, W. J.

AU - Cherepnya, S.

AU - Collicott, C.

AU - Costanza, S.

AU - Downie, E. J.

AU - Dieterle, M.

AU - Fix, A.

AU - Fil'kov, L. V.

AU - Garni, S.

AU - Glazier, D. I.

AU - Gradl, W.

AU - Gurevich, G.

AU - Barrientos, P. Hall

AU - Hamilton, D.

AU - Hornidge, D.

AU - Howdle, D.

AU - Huber, G. M.

AU - Kashevarov, V. L.

AU - Keshelashvili, I.

AU - Kondratiev, R.

AU - Korolija, M.

AU - Krusche, B.

AU - Lazarev, A.

AU - Lisin, V.

AU - Livingston, K.

AU - MacGregor, I. J. D.

AU - Mancel, J.

AU - Manley, D. M.

AU - Martel, P. P.

AU - McNicoll, E. F.

AU - Meyer, W.

AU - Middleton, D. G.

AU - Miskimen, R.

AU - Mushkarenkov, A.

AU - Neganov, A.

AU - Nikolaev, A.

AU - Oberle, M.

AU - Ortega, H.

AU - Ostrick, M.

AU - Ott, P.

AU - Otte, P. B.

AU - Oussena, B.

AU - Pedroni, P.

AU - Schumann, S.

AU - Watts, D. P.

PY - 2016/5/31

Y1 - 2016/5/31

N2 - The gamma p -> pi(0) p reaction was studied at laboratory photon energies from 425 to 1445 MeV with a transversely polarized target and a longitudinally polarized beam. The beam-target asymmetry F was measured for the first time and new high precision data for the target asymmetry T were obtained. The experiment was performed at the photon tagging facility of the Mainz Microtron (MAMI) using the Crystal Ball and TAPS photon spectrometers. The polarized cross sections were expanded in terms of associated Legendre functions and compared to recent predictions from several partial-wave analyses. The impact of the new data on our understanding of the underlying partial-wave amplitudes and baryon resonance contributions is discussed.

AB - The gamma p -> pi(0) p reaction was studied at laboratory photon energies from 425 to 1445 MeV with a transversely polarized target and a longitudinally polarized beam. The beam-target asymmetry F was measured for the first time and new high precision data for the target asymmetry T were obtained. The experiment was performed at the photon tagging facility of the Mainz Microtron (MAMI) using the Crystal Ball and TAPS photon spectrometers. The polarized cross sections were expanded in terms of associated Legendre functions and compared to recent predictions from several partial-wave analyses. The impact of the new data on our understanding of the underlying partial-wave amplitudes and baryon resonance contributions is discussed.

KW - POLARIZED TARGET ASYMMETRY

KW - NEUTRAL PION-PHOTOPRODUCTION

KW - TAGGED PHOTON SPECTROMETER

KW - GAMMA-P

KW - MAMI

KW - MICROTRON

KW - TAPS

U2 - 10.1103/PhysRevC.93.055209

DO - 10.1103/PhysRevC.93.055209

M3 - Article

SN - 2469-9985

VL - 93

JO - Physical Review C

JF - Physical Review C

IS - 5

M1 - 055209

ER -

T and F asymmetries in pi(0) photoproduction on the proton

Abstract

Keywords / Materials (for Non-textual outputs)

Access to Document

Fingerprint

Cite this