Measurement of the transverse target and beam-target asymmetries in η meson photoproduction at MAMI

C. S. Akondi; J. R.M. Annand; H. J. Arends; R. Beck; A. Bernstein; 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. Martel; E. F. McNicoll; W. Meyer; D. Middleton; R. Miskimen; A. Mushkarenkov; B. M.K. Nefkens; A. Neganov; A. Nikolaev; M. Oberle; M. Ostrick; H. Ortega; P. Ott; P. B. Otte; B. Oussena; P. Pedroni; A. Polonski; V. V. Polyanski; S. Prakhov; G. Reicherz; T. Rostomyan; A. Sarty; S. Schumann; O. Steffen; I. I. Strakovsky; Th Strub; I. Supek; L. Tiator; A. Thomas; M. Unverzagt; Yu A. Usov; D. P. Watts; D. Werthmüller; L. Witthauer; M. Wolfes

doi:10.1103/PhysRevLett.113.102001

Measurement of the transverse target and beam-target asymmetries in η meson photoproduction at MAMI

C. S. Akondi^*, J. R.M. Annand, H. J. Arends, R. Beck, A. Bernstein, 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 BarrientosD. 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. Martel, E. F. McNicoll, W. Meyer, D. Middleton, R. Miskimen, A. Mushkarenkov, B. M.K. Nefkens, A. Neganov, A. Nikolaev, M. Oberle, M. Ostrick, H. Ortega, P. Ott, P. B. Otte, B. Oussena, P. Pedroni, A. Polonski, V. V. Polyanski, S. Prakhov, G. Reicherz, T. Rostomyan, A. Sarty, S. Schumann, O. Steffen, I. I. Strakovsky, Th Strub, I. Supek, L. Tiator, A. Thomas, M. Unverzagt, Yu A. Usov, D. P. Watts, D. Werthmüller, L. Witthauer, M. Wolfes

^*Corresponding author for this work

Physics

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

Abstract

We present new data for the transverse target asymmetry T and the very first data for the beam-target asymmetry F in the γ→p→→ηp reaction up to a center-of-mass energy of W=1.9GeV. The data were obtained with the Crystal-Ball/TAPS detector setup at the Glasgow tagged photon facility of the Mainz Microtron MAMI. All existing model predictions fail to reproduce the new data indicating a significant impact on our understanding of the underlying dynamics of η meson photoproduction. The peculiar nodal structure observed in existing T data close to threshold is not confirmed.

Original language	English
Article number	102001
Journal	Physical Review Letters
Volume	113
Issue number	10
DOIs	https://doi.org/10.1103/PhysRevLett.113.102001
Publication status	Published - 4 Sept 2014

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10.1103/PhysRevLett.113.102001

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Akondi, C. S., Annand, J. R. M., Arends, H. J., Beck, R., Bernstein, A., 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., ... Wolfes, M. (2014). Measurement of the transverse target and beam-target asymmetries in η meson photoproduction at MAMI. Physical Review Letters, 113(10), Article 102001. https://doi.org/10.1103/PhysRevLett.113.102001

@article{19870359eb4945128a57623863daedd5,

title = "Measurement of the transverse target and beam-target asymmetries in η meson photoproduction at MAMI",

abstract = "We present new data for the transverse target asymmetry T and the very first data for the beam-target asymmetry F in the γ→p→→ηp reaction up to a center-of-mass energy of W=1.9GeV. The data were obtained with the Crystal-Ball/TAPS detector setup at the Glasgow tagged photon facility of the Mainz Microtron MAMI. All existing model predictions fail to reproduce the new data indicating a significant impact on our understanding of the underlying dynamics of η meson photoproduction. The peculiar nodal structure observed in existing T data close to threshold is not confirmed.",

author = "Akondi, {C. S.} and Annand, {J. R.M.} and Arends, {H. J.} and R. Beck and A. Bernstein 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 {Hall Barrientos}, P. 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 P. Martel and McNicoll, {E. F.} and W. Meyer and D. Middleton and R. Miskimen and A. Mushkarenkov and Nefkens, {B. M.K.} and A. Neganov and A. Nikolaev and M. Oberle and M. Ostrick and H. Ortega and P. Ott and Otte, {P. B.} and B. Oussena and P. Pedroni and A. Polonski and Polyanski, {V. V.} and S. Prakhov and G. Reicherz and T. Rostomyan and A. Sarty and S. Schumann and O. Steffen and Strakovsky, {I. I.} and Th Strub and I. Supek and L. Tiator and A. Thomas and M. Unverzagt and Usov, {Yu A.} and Watts, {D. P.} and D. Werthm{\"u}ller and L. Witthauer and M. Wolfes",

year = "2014",

month = sep,

day = "4",

doi = "10.1103/PhysRevLett.113.102001",

language = "English",

volume = "113",

journal = "Physical Review Letters",

issn = "0031-9007",

publisher = "American Physical Society",

number = "10",

}

Akondi, CS, Annand, JRM, Arends, HJ, Beck, R, Bernstein, A, 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, Hall Barrientos, P, 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, P, McNicoll, EF, Meyer, W, Middleton, D, Miskimen, R, Mushkarenkov, A, Nefkens, BMK, Neganov, A, Nikolaev, A, Oberle, M, Ostrick, M, Ortega, H, Ott, P, Otte, PB, Oussena, B, Pedroni, P, Polonski, A, Polyanski, VV, Prakhov, S, Reicherz, G, Rostomyan, T, Sarty, A, Schumann, S, Steffen, O, Strakovsky, II, Strub, T, Supek, I, Tiator, L, Thomas, A, Unverzagt, M, Usov, YA, Watts, DP , Werthmüller, D, Witthauer, L & Wolfes, M 2014, 'Measurement of the transverse target and beam-target asymmetries in η meson photoproduction at MAMI', Physical Review Letters, vol. 113, no. 10, 102001. https://doi.org/10.1103/PhysRevLett.113.102001

TY - JOUR

T1 - Measurement of the transverse target and beam-target asymmetries in η meson photoproduction at MAMI

AU - Akondi, C. S.

AU - Annand, J. R.M.

AU - Arends, H. J.

AU - Beck, R.

AU - Bernstein, A.

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 - Hall Barrientos, P.

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.

AU - McNicoll, E. F.

AU - Meyer, W.

AU - Middleton, D.

AU - Miskimen, R.

AU - Mushkarenkov, A.

AU - Nefkens, B. M.K.

AU - Neganov, A.

AU - Nikolaev, A.

AU - Oberle, M.

AU - Ostrick, M.

AU - Ortega, H.

AU - Ott, P.

AU - Otte, P. B.

AU - Oussena, B.

AU - Pedroni, P.

AU - Polonski, A.

AU - Polyanski, V. V.

AU - Prakhov, S.

AU - Reicherz, G.

AU - Rostomyan, T.

AU - Sarty, A.

AU - Schumann, S.

AU - Steffen, O.

AU - Strakovsky, I. I.

AU - Strub, Th

AU - Supek, I.

AU - Tiator, L.

AU - Thomas, A.

AU - Unverzagt, M.

AU - Usov, Yu A.

AU - Watts, D. P.

AU - Werthmüller, D.

AU - Witthauer, L.

AU - Wolfes, M.

PY - 2014/9/4

Y1 - 2014/9/4

N2 - We present new data for the transverse target asymmetry T and the very first data for the beam-target asymmetry F in the γ→p→→ηp reaction up to a center-of-mass energy of W=1.9GeV. The data were obtained with the Crystal-Ball/TAPS detector setup at the Glasgow tagged photon facility of the Mainz Microtron MAMI. All existing model predictions fail to reproduce the new data indicating a significant impact on our understanding of the underlying dynamics of η meson photoproduction. The peculiar nodal structure observed in existing T data close to threshold is not confirmed.

AB - We present new data for the transverse target asymmetry T and the very first data for the beam-target asymmetry F in the γ→p→→ηp reaction up to a center-of-mass energy of W=1.9GeV. The data were obtained with the Crystal-Ball/TAPS detector setup at the Glasgow tagged photon facility of the Mainz Microtron MAMI. All existing model predictions fail to reproduce the new data indicating a significant impact on our understanding of the underlying dynamics of η meson photoproduction. The peculiar nodal structure observed in existing T data close to threshold is not confirmed.

UR - http://www.scopus.com/inward/record.url?scp=84911480005&partnerID=8YFLogxK

U2 - 10.1103/PhysRevLett.113.102001

DO - 10.1103/PhysRevLett.113.102001

M3 - Article

AN - SCOPUS:84911480005

SN - 0031-9007

VL - 113

JO - Physical Review Letters

JF - Physical Review Letters

IS - 10

M1 - 102001

ER -

Measurement of the transverse target and beam-target asymmetries in η meson photoproduction at MAMI

Abstract

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