Flavor dependence of charged pion fragmentation functions
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.
Authors
- H. Bhatt (ORCID: https://orcid.org/0000-0003-0087-5387)
- B. Duran (ORCID: https://orcid.org/0000-0003-2344-5953)
- Jyh‐Ping Chen (ORCID: https://orcid.org/0000-0001-6527-4801)
- D. Androić (ORCID: https://orcid.org/0000-0002-3921-5696)
- M. L. Kabir (ORCID: https://orcid.org/0000-0003-2142-5166)
- D. Bhetuwal (ORCID: https://orcid.org/0000-0002-1006-9744)
- E. Fuchey
- B. Sawatzky
- M. Elaasar
- E. Kinney (ORCID: https://orcid.org/0000-0002-4176-5283)
- В. В. Бердников (ORCID: https://orcid.org/0000-0003-1603-4320)
- M. Boer
- E. Pooser
- Shaoyang Jia (ORCID: https://orcid.org/0000-0002-8226-2279)
- E. Brash
- E. M. Christy
- C. Yero
- H. Voskanyan
- Zihao Ye (ORCID: https://orcid.org/0000-0002-2529-9286)
- N. Lashley-Colthirst
- R. Ambrose
- Abishek Karki
- C. Ayerbe Gayoso (ORCID: https://orcid.org/0000-0001-8640-5380)
- Elizabeth McClellan
- B. Karki
- S. Covrig
- S. Malace
- A.S. Tadepalli (ORCID: https://orcid.org/0000-0002-5312-8943)
- D. Dutta (ORCID: https://orcid.org/0000-0002-7103-2849)
- G. M. Huber (ORCID: https://orcid.org/0000-0002-5658-1065)
- C. E. Keppel
- O. Hansen (ORCID: https://orcid.org/0000-0002-7908-3886)
- B. Pandey (ORCID: https://orcid.org/0000-0003-2006-6835)
- M. Chen
- S. Danagoulian (ORCID: https://orcid.org/0000-0002-6662-4225)
- H. Fenker
- R. Michaels
- S. A. Wood (ORCID: https://orcid.org/0000-0002-1909-5287)
- R. Trotta
- J. Chen
- M. K. Jones
- F. Hauenstein (ORCID: https://orcid.org/0000-0002-1265-2212)
- P. Bosted
- S. Kay (ORCID: https://orcid.org/0000-0002-8855-3034)
- M. A. Cardona (ORCID: https://orcid.org/0000-0001-7841-9408)
- M. McCaughan (ORCID: https://orcid.org/0000-0003-2649-3950)
- S. Park
- H. Szumila-Vance
- W.B. Li
- Shaikh Faruque Ali (ORCID: https://orcid.org/0000-0003-4651-9548)
- T. Horn
- W. Armstrong
- G. Niculescu
- R. Ent
- Markus Diefenthaler (ORCID: https://orcid.org/0000-0002-4717-4484)
- I. Niculescu
- H. Mkrtchyan
- V. Tadevosyan
- V. Kumar
- D. Gaskell
- G.R. Smith
- D. Biswas
- Charlie Elliot
- D. Meekins
- D. Mack
- A. Camsonne
- X. Zheng
- A. Mkrtchyan
- Anashe Bandari
- P. Markowitz
Publication Details
- Journal
- Physics Letters B
- Published
- 2025-04-17
- DOI
- https://doi.org/10.1016/j.physletb.2025.139485
- Citations
- 3
- Primary Topic
- Quantum Chromodynamics and Particle Interactions
- Type
- article
- Field-Weighted Citation Impact
- 5.61
Funders
- National Science Foundation
- U.S. Department of Energy
- Directorate for Mathematical and Physical Sciences
- Office of Science
- Natural Sciences and Engineering Research Council of Canada
- Thomas Jefferson National Accelerator Facility