Document Type
Article
Publication Date
2025
DOI
10.1016/j.physletb.2025.139485
Publication Title
Physics Letters B
Volume
865
Pages
139485
Abstract
We have measured the flavor dependence of multiplicities for π+ and π− production in semi-inclusive deep-inelastic scattering (SIDIS) on proton and deuteron to explore a possible charge symmetry violation in fragmentation functions. The experiment used an electron beam with energies of 10.2 and 10.6 GeV at Jefferson Lab and the Hall-C spectrometers. The electron kinematics spanned the range 0.3 < x < 0.6, 2 < Q² < 5.5 GeV², and 2.2 < W < 3.2 GeV. The pion fractional momentum range was 0.3 < z < 0.7, and the transverse momentum range was 0 < pT < 0.25 GeV/c. Assuming factorization and allowing for isospin breaking, the results can be described by two “favored” and two “unfavored” effective low pT fragmentation functions that are flavor-dependent. We find each pair converges to a common flavor-independent fragmentation function at the highest W, where factorization is most applicable.
Rights
© 2025 The Authors.
This is an open access article under the Creative Commons Attribution 4.0 International (CC BY 4.0) License.
Data Availability
Article states: "Data will be made available upon request."
Original Publication Citation
Bhatt, H., Bosted, P., Jia, S., Armstrong, W., Dutta, D., Ent, R., Gaskell, D., Kinney, E., Mkrtchyan, H., Ali, S., Ambrose, R., Androić, D., Ayerbe Gayoso, C., Bandari, A., Berdnikov, V., Bhetuwal, D., Biswas, D., Boer, M., Brash, E.,…Zheng, X. (2025). Flavor dependence of charged pion fragmentation functions. Physics Letters B, 865, 1-6, Article 139485. https://doi.org/10.1016/j.physletb.2025.139485
ORCID
0000-0002-1265-2212 (Hauenstein)
Repository Citation
Bhatt, H.; Bosted, P.; Jia, S.; Armstrong, W.; Dutta, D.; Ent, R.; Gaskell, D.; Kinney, E.; Mkrtchyan, H.; Ali, S.; Ambrose, R.; Androić, D.; Ayerbe Gayoso, C.; Bandari, A.; Berdnikov, V.; Bhetuwal, D.; Biswas, D.; Boer, M.; Brash, E.; Camsonne, A.; Cardona, M.; Chen, J. P.; Chen, J.; Chen, M.; Christy, E. M.; Danagoulian, S.; Diefenthaler, M.; Covrig, S.; Duran, B.; Elaasar, M.; Elliot, C.; Fenker, H.; Fuchey, E.; Hansen, J. O.; Hauenstein, F.; Horn, T.; Huber, G. M.; Jones, M. K.; Kabir, M. L.; Karki, A.; Karki, B.; Kay, S. J. D.; Keppel, C.; Kumar, V.; Lashley-Colthirst, N.; Li, W. B.; Mack, D.; Malace, S.; Markowitz, P.; McCaughan, M.; McClellan, E.; Meekins, D.; Michaels, R.; Mkrtchyan, A.; Niculescu, G.; Niculescu, I.; Pandey, B.; Park, S.; Pooser, E.; Sawatzky, B.; Smith, G. R.; Szumila-Vance, H.; Tadepalli, A. S.; Tadevosyan, V.; Trotta, R.; Voskanyan, H.; Wood, S. A.; Ye, Z.; Yero, C.; and Zheng, X., "Flavor Dependence of Charged Pion Fragmentation Functions" (2025). Physics Faculty Publications. 963.
https://digitalcommons.odu.edu/physics_fac_pubs/963
Supplementary Material