First measurement of direct photoproduction of the a2(1320)0 meson on the proton

The CLAS Collaboration

doi:10.1103/PhysRevC.102.032201

First measurement of direct photoproduction of the a2(1320)0 meson on the proton

The CLAS Collaboration

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

Abstract

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.

Original language	English
Article number	032201
Journal	Physical Review C
Volume	102
Issue number	3
DOIs	https://doi.org/10.1103/PhysRevC.102.032201
Publication status	Published - 28 Sept 2020

Bibliographical note

Access to Document

10.1103/PhysRevC.102.032201

PhysRevC.102.032201
©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
Final published version, 1.37 MB

Cite this

@article{b69e1b07efbe40b4b21415f89f9c0a08,

title = "First measurement of direct photoproduction of the a2(1320)0 meson on the proton",

abstract = "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.",

author = "{The CLAS Collaboration} and A. Celentano and M. Battaglieri and {De Vita}, R. and L. Marsicano and V. Mathieu and A. Pilloni and A. Szczepaniak and Adhikari, {K. P.} and S. Adhikari and Amaryan, {M. J.} and G. Angelini and H. Atac and L. Barion and I. Bedlinskiy and Fatiha Benmokhtar and A. Bianconi and Biselli, {A. S.} and F. Boss{\`u} and S. Boiarinov and Briscoe, {W. J.} and Brooks, {W. K.} and D. Bulumulla and Burkert, {V. D.} and Carman, {D. S.} and Carvajal, {J. C.} and P. Chatagnon and T. Chetry and G. Ciullo and L. Clark and Cole, {P. L.} and M. Contalbrigo and O. Cortes and V. Crede and R. Cruz-Torres and A. D'Angelo and N. Dashyan and M. Defurne and A. Deur and S. Diehl and C. Djalali and M. Dugger and R. Dupre and H. Egiyan and M. Ehrhart and {El Alaoui}, A. and {El Fassi}, L. and L. Elouadrhiri and P. Eugenio and D. Watts and N. Zachariou",

note = "{\textcopyright}2020 American Physical Society. Uploaded in accordance with the publisher{\textquoteright}s self-archiving policy. Further copying may not be permitted; contact the publisher for details",

year = "2020",

month = sep,

day = "28",

doi = "10.1103/PhysRevC.102.032201",

language = "English",

volume = "102",

journal = "Physical Review C",

issn = "2469-9985",

publisher = "American Physical Society",

number = "3",

}

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.

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

SN - 2469-9985

VL - 102

JO - Physical Review C

JF - Physical Review C

IS - 3

M1 - 032201

ER -

First measurement of direct photoproduction of the a2(1320)0 meson on the proton

Abstract

Bibliographical note

Access to Document

Other files and links

Nuclear Physics Consolidated Grant 2021-2024

Cite this

First measurement of direct photoproduction of the a2(1320)0 meson on the proton

Abstract

Bibliographical note

Access to Document

Other files and links

Projects

Nuclear Physics Consolidated Grant 2021-2024

Cite this