Photoproduction of two charged pions off protons in the resonance region

CLAS Collaboration

doi:10.1103/PhysRevC.111.035203

Photoproduction of two charged pions off protons in the resonance region

CLAS Collaboration

RAS - Saint Petersburg Nuclear Physics Institute
Thomas Jefferson National Accelerator Facility
University of Bonn
Florida State University
Université Paris-Saclay
Old Dominion University
Temple University
Florida International University
University of South Carolina
National Institute for Nuclear Physics
University of York
Duquesne University
University of Brescia
Carnegie Mellon University
Fairfield University
Justus Liebig University Giessen
George Washington University
University of Connecticut
University of Rome Tor Vergata
A. Alikhanian Yerevan Institute of Physics
Ohio University
Universidad Técnica Federico Santa Maria
Mississippi State University
University of Glasgow
University of New Hampshire

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

2 Scopus citations

Abstract

Photoproduction of charged pions pairs off protons is studied within the invariant masses of the final state hadrons from 1.6 to 2.4 GeV at the Thomas Jefferson National Accelerator Facility with the CLAS detector. The total and differential cross sections and spin-density matrix elements are presented for the isobars pρ0(770), Δ(1232)++π-, and Δ(1232)0π+. The data are included in the Bonn-Gatchina coupled-channel analysis and provide the information necessary to determine the branching fractions of Nρ(770) decays for most known N∗ and Δ∗ resonances. For the first time, the Nρ branching ratios are obtained here from an event-based likelihood to γp→π+π-p.

Original language	English
Article number	035203
Journal	Physical Review C
Volume	111
Issue number	3
DOIs	https://doi.org/10.1103/PhysRevC.111.035203
State	Published - Mar 2025

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10.1103/PhysRevC.111.035203

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@article{68e644de812f4aeebce70442b71f3111,

title = "Photoproduction of two charged pions off protons in the resonance region",

abstract = "Photoproduction of charged pions pairs off protons is studied within the invariant masses of the final state hadrons from 1.6 to 2.4 GeV at the Thomas Jefferson National Accelerator Facility with the CLAS detector. The total and differential cross sections and spin-density matrix elements are presented for the isobars pρ0(770), Δ(1232)++π-, and Δ(1232)0π+. The data are included in the Bonn-Gatchina coupled-channel analysis and provide the information necessary to determine the branching fractions of Nρ(770) decays for most known N∗ and Δ∗ resonances. For the first time, the Nρ branching ratios are obtained here from an event-based likelihood to γp→π+π-p.",

author = "\{CLAS Collaboration\} and Sarantsev, \{A. V.\} and E. Klempt and Nikonov, \{K. V.\} and P. Achenbach and Burkert, \{V. D.\} and V. Crede and V. Mokeev and Alvarado, \{J. S.\} and Amaryan, \{M. J.\} and H. Atac and L. Baashen and Baltzell, \{N. A.\} and L. Barion and M. Bashkanov and M. Battaglieri and B. Benkel and F. Benmokhtar and A. Bianconi and Biselli, \{A. S.\} and F. Boss{\`u} and S. Boiarinov and Brinkmann, \{K. Th\} and Briscoe, \{W. J.\} and T. Cao and R. Capobianco and Carman, \{D. S.\} and Carvajal, \{J. C.\} and P. Chatagnon and M. Contalbrigo and A. D'Angelo and N. Dashyan and \{De Vita\}, R. and M. Defurne and A. Deur and S. Diehl and C. Djalali and R. Dupre and H. Egiyan and \{El Alaoui\}, A. and \{El Fassi\}, L. and L. Elouadrhiri and P. Eugenio and S. Fegan and A. Filippi and K. Gates and G. Gavalian and Glazier, \{D. I.\} and Gothe, \{R. W.\} and L. Guo and Jo, \{H. S.\}",

note = "Publisher Copyright: {\textcopyright} 2025 American Physical Society.",

year = "2025",

month = mar,

doi = "10.1103/PhysRevC.111.035203",

language = "English",

volume = "111",

journal = "Physical Review C",

issn = "2469-9985",

publisher = "American Physical Society",

number = "3",

}

TY - JOUR

T1 - Photoproduction of two charged pions off protons in the resonance region

AU - CLAS Collaboration

AU - Sarantsev, A. V.

AU - Klempt, E.

AU - Nikonov, K. V.

AU - Achenbach, P.

AU - Burkert, V. D.

AU - Crede, V.

AU - Mokeev, V.

AU - Alvarado, J. S.

AU - Amaryan, M. J.

AU - Atac, H.

AU - Baashen, L.

AU - Baltzell, N. A.

AU - Barion, L.

AU - Bashkanov, M.

AU - Battaglieri, M.

AU - Benkel, B.

AU - Benmokhtar, F.

AU - Bianconi, A.

AU - Biselli, A. S.

AU - Bossù, F.

AU - Boiarinov, S.

AU - Brinkmann, K. Th

AU - Briscoe, W. J.

AU - Cao, T.

AU - Capobianco, R.

AU - Carman, D. S.

AU - Carvajal, J. C.

AU - Chatagnon, P.

AU - Contalbrigo, M.

AU - D'Angelo, A.

AU - Dashyan, N.

AU - De Vita, R.

AU - Defurne, M.

AU - Deur, A.

AU - Diehl, S.

AU - Djalali, C.

AU - Dupre, R.

AU - Egiyan, H.

AU - El Alaoui, A.

AU - El Fassi, L.

AU - Elouadrhiri, L.

AU - Eugenio, P.

AU - Fegan, S.

AU - Filippi, A.

AU - Gates, K.

AU - Gavalian, G.

AU - Glazier, D. I.

AU - Gothe, R. W.

AU - Guo, L.

AU - Jo, H. S.

PY - 2025/3

Y1 - 2025/3

N2 - Photoproduction of charged pions pairs off protons is studied within the invariant masses of the final state hadrons from 1.6 to 2.4 GeV at the Thomas Jefferson National Accelerator Facility with the CLAS detector. The total and differential cross sections and spin-density matrix elements are presented for the isobars pρ0(770), Δ(1232)++π-, and Δ(1232)0π+. The data are included in the Bonn-Gatchina coupled-channel analysis and provide the information necessary to determine the branching fractions of Nρ(770) decays for most known N∗ and Δ∗ resonances. For the first time, the Nρ branching ratios are obtained here from an event-based likelihood to γp→π+π-p.

AB - Photoproduction of charged pions pairs off protons is studied within the invariant masses of the final state hadrons from 1.6 to 2.4 GeV at the Thomas Jefferson National Accelerator Facility with the CLAS detector. The total and differential cross sections and spin-density matrix elements are presented for the isobars pρ0(770), Δ(1232)++π-, and Δ(1232)0π+. The data are included in the Bonn-Gatchina coupled-channel analysis and provide the information necessary to determine the branching fractions of Nρ(770) decays for most known N∗ and Δ∗ resonances. For the first time, the Nρ branching ratios are obtained here from an event-based likelihood to γp→π+π-p.

UR - https://www.scopus.com/pages/publications/105001650063

U2 - 10.1103/PhysRevC.111.035203

DO - 10.1103/PhysRevC.111.035203

M3 - Article

AN - SCOPUS:105001650063

SN - 2469-9985

VL - 111

JO - Physical Review C

JF - Physical Review C

IS - 3

M1 - 035203

ER -

Photoproduction of two charged pions off protons in the resonance region

Abstract

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