Measurements of γ_v p → π⁺ π^-p' Cross Sections with the CLAS12 Detector for Q² from 2.4-8.0 GeV² and W from 1.4-2.1 GeV

@misc{neupane2026measurements,
  title = {{Measurements of $γ_v p \to π^+ π^-p'$ Cross Sections with the CLAS12 Detector for $Q^2$ from 2.4-8.0 GeV$^2$ and $W$ from 1.4-2.1 GeV}},
  author = {K Neupane and R.W Gothe and D.S Carman and V.I Mokeev and A.G Acar and P Achenbach and J.S Alvarado and W.R Armstrong and H Avakian and N.A Baltzell and L Barion and M Bashkanov and M Battaglieri and F Benmokhtar and A Bianconi and A.S Biselli and A Biswas and F Bossù and S Boiarinov and M Bondi and K.-Th Brinkmann and W.J Briscoe and W.K Brooks and J Bryce and N.L. Bucuru R. and V.D Burkert and T Cao and A Celentano and P Chatagnon and V Chesnokov and H Chinchay and G Ciullo and E.W Cline and P.L Cole and M Contalbrigo and A d'Angelo and N Dashyan and R de Vita and A Deur and S Diehl and C Dilks and C Djalali and R Dupre and H Egiyan and M Ehrhart and A El Alaoui and L El Fassi and L Elouadrhiri and C Fanelli and M Farooq and S Fegan and I.P Fernando and E Ferrand and A Filippi and M Filippini and C Fogler and S Frantzen and K Gates and G.P Gilfoyle and D.I Glazier},
  howpublished = {HAL},
  year = {2026},
  month = sep,
  doi = {10.48550/arxiv.2609.19395},
  eprint = {2609.19395},
  archivePrefix = {arXiv},
  url = {https://hal.science/hal-05763126v1},
}

TY  - UNPB
TI  - Measurements of γ_v p → π^+ π^-p' Cross Sections with the CLAS12 Detector for Q^2 from 2.4-8.0 GeV^2 and W from 1.4-2.1 GeV
AU  - K Neupane
AU  - R.W Gothe
AU  - D.S Carman
AU  - V.I Mokeev
AU  - A.G Acar
AU  - P Achenbach
AU  - J.S Alvarado
AU  - W.R Armstrong
AU  - H Avakian
AU  - N.A Baltzell
AU  - L Barion
AU  - M Bashkanov
AU  - M Battaglieri
AU  - F Benmokhtar
AU  - A Bianconi
AU  - A.S Biselli
AU  - A Biswas
AU  - F Bossù
AU  - S Boiarinov
AU  - M Bondi
AU  - K.-Th Brinkmann
AU  - W.J Briscoe
AU  - W.K Brooks
AU  - J Bryce
AU  - N.L. Bucuru R.
AU  - V.D Burkert
AU  - T Cao
AU  - A Celentano
AU  - P Chatagnon
AU  - V Chesnokov
AU  - H Chinchay
AU  - G Ciullo
AU  - E.W Cline
AU  - P.L Cole
AU  - M Contalbrigo
AU  - A d'Angelo
AU  - N Dashyan
AU  - R de Vita
AU  - A Deur
AU  - S Diehl
AU  - C Dilks
AU  - C Djalali
AU  - R Dupre
AU  - H Egiyan
AU  - M Ehrhart
AU  - A El Alaoui
AU  - L El Fassi
AU  - L Elouadrhiri
AU  - C Fanelli
AU  - M Farooq
AU  - S Fegan
AU  - I.P Fernando
AU  - E Ferrand
AU  - A Filippi
AU  - M Filippini
AU  - C Fogler
AU  - S Frantzen
AU  - K Gates
AU  - G.P Gilfoyle
AU  - D.I Glazier
PY  - 2026
DA  - 2026/09/18
PB  - HAL
DO  - 10.48550/arxiv.2609.19395
UR  - https://hal.science/hal-05763126v1
AB  - This paper reports exclusive cross sections for the ep → e'π^+π^-p' reaction using the CLAS12 detector at Jefferson Laboratory. The extractions of fully integrated and nine single-differential cross sections are presented for the first time for photon virtualities Q^2 from 2.4 to 8.0 GeV^2 and center-of-mass energies W from 1.4 to 2.1 GeV, which covers a large part of the nucleon resonance region. These data considerably extend the kinematic reach of previous measurements from CLAS that covered Q^2 up to 5.0 GeV^2. Exclusive γ_v p → π^+ π^-p' cross section measurements are of particular importance for the extraction of γ_vpN^* resonance electrocouplings across the N^* spectrum, especially in the mass range above 1.6 GeV where several resonances decay preferentially to the ππN final states. The electrocouplings with extended Q^2 coverage expected from these new data will enable an improved understanding of the emergence of N^* mass and structure in the transition from the strongly coupled toward the perturbative QCD regime.
ER  -