Research output: Contribution to journal › Article › peer-review
First measurement of direct photoproduction of the a2(1320)0 meson on the proton. / The CLAS Collaboration.
In: Physical Review C, Vol. 102, No. 3, 032201, 28.09.2020.Research output: Contribution to journal › Article › peer-review
}
TY - JOUR
T1 - First measurement of direct photoproduction of the a2(1320)0 meson on the proton
AU - The CLAS Collaboration
AU - Celentano, A.
AU - Battaglieri, M.
AU - De Vita, R.
AU - Marsicano, L.
AU - Mathieu, V.
AU - Pilloni, A.
AU - Szczepaniak, A.
AU - Adhikari, K. P.
AU - Adhikari, S.
AU - Amaryan, M. J.
AU - Angelini, G.
AU - Atac, H.
AU - Barion, L.
AU - Bedlinskiy, I.
AU - Benmokhtar, Fatiha
AU - Bianconi, A.
AU - Biselli, A. S.
AU - Bossù, F.
AU - Boiarinov, S.
AU - Briscoe, W. J.
AU - Brooks, W. K.
AU - Bulumulla, D.
AU - Burkert, V. D.
AU - Carman, D. S.
AU - Carvajal, J. C.
AU - Chatagnon, P.
AU - Chetry, T.
AU - Ciullo, G.
AU - Clark, L.
AU - Cole, P. L.
AU - Contalbrigo, M.
AU - Cortes, O.
AU - Crede, V.
AU - Cruz-Torres, R.
AU - D'Angelo, A.
AU - Dashyan, N.
AU - Defurne, M.
AU - Deur, A.
AU - Diehl, S.
AU - Djalali, C.
AU - Dugger, M.
AU - Dupre, R.
AU - Egiyan, H.
AU - Ehrhart, M.
AU - El Alaoui, A.
AU - El Fassi, L.
AU - Elouadrhiri, L.
AU - Eugenio, P.
AU - Watts, D.
AU - Zachariou, N.
N1 - ©2020 American Physical Society. Uploaded in accordance with the publisher’s self-archiving policy. Further copying may not be permitted; contact the publisher for details
PY - 2020/9/28
Y1 - 2020/9/28
N2 - We present the first measurement of the reaction γp→a2(1320)0p in the photon energy range 3.5-5.5GeV and four-momentum transfer squared 0.2<-t<2.0GeV2. Data were collected with the CEBAF Large Acceptance Spectrometer detector at the Thomas Jefferson National Accelerator Facility. The a2 resonance was detected by measuring the reaction γp→π0ηp and reconstructing the π0η invariant mass. The most prominent feature of the differential cross section is a dip at-t≈0.55GeV2. This can be described in the framework of Regge phenomenology, where the exchange degeneracy hypothesis predicts a zero in the reaction amplitude for this value of the four-momentum transfer.
AB - We present the first measurement of the reaction γp→a2(1320)0p in the photon energy range 3.5-5.5GeV and four-momentum transfer squared 0.2<-t<2.0GeV2. Data were collected with the CEBAF Large Acceptance Spectrometer detector at the Thomas Jefferson National Accelerator Facility. The a2 resonance was detected by measuring the reaction γp→π0ηp and reconstructing the π0η invariant mass. The most prominent feature of the differential cross section is a dip at-t≈0.55GeV2. This can be described in the framework of Regge phenomenology, where the exchange degeneracy hypothesis predicts a zero in the reaction amplitude for this value of the four-momentum transfer.
UR - http://www.scopus.com/inward/record.url?scp=85092736010&partnerID=8YFLogxK
U2 - 10.1103/PhysRevC.102.032201
DO - 10.1103/PhysRevC.102.032201
M3 - Article
AN - SCOPUS:85092736010
VL - 102
JO - Physical Review C - Nuclear Physics
JF - Physical Review C - Nuclear Physics
SN - 0556-2813
IS - 3
M1 - 032201
ER -