Measurements of γv p → π+ π- p' Cross Sections with the CLAS Detector for Q2 from 2.0--5.0~GeV2 and W from 1.400--2.125~GeV
Abstract
Observables in the electroproduction of the π+π-p reaction channel off the proton that are sensitive to the polarization of the virtual photon are presented for the first time in addition to the extraction of the nine single-differential and fully integrated cross sections within the kinematics area of 2.0~GeV2 < Q2 < 5.0~GeV2 and 1.400~GeV < W < 2.125~GeV measured with the CLAS detector in Hall B at Jefferson Lab. The extraction of the unpolarized cross sections has been considerably improved in comparison with previously published results from this same dataset, offering finer binning over the five-dimensional hadronic reaction phase space, and including essential advances in the acceptance evaluation by implementing a new technique to stabilize the cross section extraction and minimize the systematic uncertainty associated with the simulation statistics. These improvements are of particular importance for the extraction of the γv p N* electrocouplings from these data.
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BibTeX
@misc{trivedi2026measurements,
title = {{Measurements of $γ_v p \to π^+ π^- p'$ Cross Sections with the CLAS Detector for $Q^2$ from 2.0--5.0~GeV$^2$ and $W$ from 1.400--2.125~GeV}},
author = {A. Trivedi and R. W. Gothe and E. Phelps and V. I. Mokeev and D. S. Carman and P. Achenbach and J. S. Alvarado and M. J. Amaryan and N. A. Baltzell and L. Barion and F. Benmokhtar and A. Bianconi and A. S. Biselli and M. Bondi and F. Bossu and K. -Th. Brinkmann and W. J. Briscoe and J. Bryce and T. Cao and P. Chatagnon and H. Chinchay and G. Ciullo and E. W. Cline and V. Crede and A. D'Angelo and N. Dashyan and R. De Vita and A. Deur and S. Diehl and C. Djalali and R. Dupre and H. Egiyan and A. El Alaoui and L. El Fassi and M. Farooq and S. Fegan and I. P. Fernando and E. Ferrand and A. Filippi and K. Gates and D. I. Glazier and B. Gualtieri and H. Hakobyan and T. B. Hayward and D. Heddle and M. Hoballah and M. Holtrop and Y. Ilieva and D. G. Ireland and E. L. Isupov and M. Khandaker and F. J. Klein and V. Klimenko and A. Kripko and V. Kubarovsky and C. Lama and L. Lanza and P. Lenisa and X. Li and D. Martiryan},
howpublished = {arXiv},
year = {2026},
month = sep,
doi = {10.48550/arxiv.2607.06793},
eprint = {2607.06793},
archivePrefix = {arXiv},
url = {https://arxiv.org/abs/2607.06793},
}
RIS
TY - UNPB
TI - Measurements of γ_v p → π^+ π^- p' Cross Sections with the CLAS Detector for Q^2 from 2.0--5.0~GeV^2 and W from 1.400--2.125~GeV
AU - A. Trivedi
AU - R. W. Gothe
AU - E. Phelps
AU - V. I. Mokeev
AU - D. S. Carman
AU - P. Achenbach
AU - J. S. Alvarado
AU - M. J. Amaryan
AU - N. A. Baltzell
AU - L. Barion
AU - F. Benmokhtar
AU - A. Bianconi
AU - A. S. Biselli
AU - M. Bondi
AU - F. Bossu
AU - K. -Th. Brinkmann
AU - W. J. Briscoe
AU - J. Bryce
AU - T. Cao
AU - P. Chatagnon
AU - H. Chinchay
AU - G. Ciullo
AU - E. W. Cline
AU - V. Crede
AU - A. D'Angelo
AU - N. Dashyan
AU - R. De Vita
AU - A. Deur
AU - S. Diehl
AU - C. Djalali
AU - R. Dupre
AU - H. Egiyan
AU - A. El Alaoui
AU - L. El Fassi
AU - M. Farooq
AU - S. Fegan
AU - I. P. Fernando
AU - E. Ferrand
AU - A. Filippi
AU - K. Gates
AU - D. I. Glazier
AU - B. Gualtieri
AU - H. Hakobyan
AU - T. B. Hayward
AU - D. Heddle
AU - M. Hoballah
AU - M. Holtrop
AU - Y. Ilieva
AU - D. G. Ireland
AU - E. L. Isupov
AU - M. Khandaker
AU - F. J. Klein
AU - V. Klimenko
AU - A. Kripko
AU - V. Kubarovsky
AU - C. Lama
AU - L. Lanza
AU - P. Lenisa
AU - X. Li
AU - D. Martiryan
PY - 2026
DA - 2026/09/16
PB - arXiv
DO - 10.48550/arxiv.2607.06793
UR - https://arxiv.org/abs/2607.06793
AB - Observables in the electroproduction of the π^+π^-p reaction channel off the proton that are sensitive to the polarization of the virtual photon are presented for the first time in addition to the extraction of the nine single-differential and fully integrated cross sections within the kinematics area of 2.0~GeV^2 < Q^2 < 5.0~GeV^2 and 1.400~GeV < W < 2.125~GeV measured with the CLAS detector in Hall B at Jefferson Lab. The extraction of the unpolarized cross sections has been considerably improved in comparison with previously published results from this same dataset, offering finer binning over the five-dimensional hadronic reaction phase space, and including essential advances in the acceptance evaluation by implementing a new technique to stabilize the cross section extraction and minimize the systematic uncertainty associated with the simulation statistics. These improvements are of particular importance for the extraction of the γ_v p N^* electrocouplings from these data.
ER -