Kinematics of current region fragmentation in semi-inclusive deeply inelastic scattering
Abstract
Different kinematical regions of semi-inclusive deeply inelastic scattering (SIDIS) processes correspond to different underlying partonic pictures, and it is important to understand the transition between them. We find criteria in semi-inclusive deeply inelastic scattering (SIDIS) for identifying the current fragmentation region — the kinematical region where a factorization picture with fragmentation functions is appropriate, especially for studies of transverse-momentum-dependent (TMD) functions. This region is distinguished from the central (soft) and target fragmentation regions. The basis of our argument is in the errors in approximations used in deriving factorization. As compared with previous work, we show that it is essential to take account of the transverse momentum of the detected hadron, and we find a much more restricted range for genuine current fragmentation. We show that it is important to develop an extended factorization formulation to treat hadronization in the central region, as well as the current and target fragmentation regions, and to obtain a unified formalism spanning all rapidities for the detected hadron.
- Publication Date:
- Research Org.:
- Thomas Jefferson National Accelerator Facility (TJNAF), Newport News, VA (United States); Pennsylvania State Univ., University Park, PA (United States)
- Sponsoring Org.:
- USDOE Office of Science (SC), Nuclear Physics (NP)
- OSTI Identifier:
- 1343160
- Alternate Identifier(s):
- OSTI ID: 1340277; OSTI ID: 1905872
- Report Number(s):
- JLAB-THY-16-2389; DOE/OR/23177-4012; arXiv:1611.10329
Journal ID: ISSN 0370-2693; S037026931730028X; PII: S037026931730028X
- Grant/Contract Number:
- AC05-06OR23177; FG02-07ER41460; SC0013699; TO-Call3-2012-0103
- Resource Type:
- Published Article
- Journal Name:
- Physics Letters B
- Additional Journal Information:
- Journal Name: Physics Letters B Journal Volume: 766 Journal Issue: C; Journal ID: ISSN 0370-2693
- Publisher:
- Elsevier
- Country of Publication:
- Netherlands
- Language:
- English
- Subject:
- 72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; semi-inclusive deep inelastic scattering; perturbative QCD; factorization theorems; current fragmentation; 73 NUCLEAR PHYSICS AND RADIATION PHYSICS; Perturbative QCD, Factorization theorems,Semi-inclusive deep inelastic scattering
Citation Formats
Boglione, M., Collins, J., Gamberg, L., Gonzalez-Hernandez, J. O., Rogers, T. C., and Sato, N. Kinematics of current region fragmentation in semi-inclusive deeply inelastic scattering. Netherlands: N. p., 2017.
Web. doi:10.1016/j.physletb.2017.01.021.
Boglione, M., Collins, J., Gamberg, L., Gonzalez-Hernandez, J. O., Rogers, T. C., & Sato, N. Kinematics of current region fragmentation in semi-inclusive deeply inelastic scattering. Netherlands. https://doi.org/10.1016/j.physletb.2017.01.021
Boglione, M., Collins, J., Gamberg, L., Gonzalez-Hernandez, J. O., Rogers, T. C., and Sato, N. Wed .
"Kinematics of current region fragmentation in semi-inclusive deeply inelastic scattering". Netherlands. https://doi.org/10.1016/j.physletb.2017.01.021.
@article{osti_1343160,
title = {Kinematics of current region fragmentation in semi-inclusive deeply inelastic scattering},
author = {Boglione, M. and Collins, J. and Gamberg, L. and Gonzalez-Hernandez, J. O. and Rogers, T. C. and Sato, N.},
abstractNote = {Different kinematical regions of semi-inclusive deeply inelastic scattering (SIDIS) processes correspond to different underlying partonic pictures, and it is important to understand the transition between them. We find criteria in semi-inclusive deeply inelastic scattering (SIDIS) for identifying the current fragmentation region — the kinematical region where a factorization picture with fragmentation functions is appropriate, especially for studies of transverse-momentum-dependent (TMD) functions. This region is distinguished from the central (soft) and target fragmentation regions. The basis of our argument is in the errors in approximations used in deriving factorization. As compared with previous work, we show that it is essential to take account of the transverse momentum of the detected hadron, and we find a much more restricted range for genuine current fragmentation. We show that it is important to develop an extended factorization formulation to treat hadronization in the central region, as well as the current and target fragmentation regions, and to obtain a unified formalism spanning all rapidities for the detected hadron.},
doi = {10.1016/j.physletb.2017.01.021},
journal = {Physics Letters B},
number = C,
volume = 766,
place = {Netherlands},
year = {Wed Mar 01 00:00:00 EST 2017},
month = {Wed Mar 01 00:00:00 EST 2017}
}
https://doi.org/10.1016/j.physletb.2017.01.021
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