Gauge invariance and kaon production in deep inelastic scattering at low scales
Abstract
This work focuses on hadron mass effects in calculations of semi-inclusive kaon production in lepton-Deuteron deeply inelastic scattering at HERMES and COMPASS kinematics. In the collinear factorization framework, the corresponding cross section is shown to factorize, at leading order and leading twist, into products of parton distributions and fragmentation functions evaluated in terms of kaon- and nucleon-mass-dependent scaling variables, and to respect gauge invariance. It is found that hadron mass corrections for integrated kaon multiplicities sizeably reduce the apparent large discrepancy between measurements of K+ + K- multiplicities performed by the two collaborations, and fully reconcile their K+/K- ratios.
- Authors:
-
- Thomas Jefferson National Accelerator Facility (TJNAF), Newport News, VA (United States); Hampton Univ., Hampton, VA (United States)
- Publication Date:
- Research Org.:
- Thomas Jefferson National Accelerator Facility (TJNAF), Newport News, VA (United States)
- Sponsoring Org.:
- USDOE Office of Science (SC), Nuclear Physics (NP)
- OSTI Identifier:
- 1441070
- Alternate Identifier(s):
- OSTI ID: 1440882
- Report Number(s):
- JLAB-THY-17-2596; DOE/OR/23177-4259; arXiv:1711.04346
Journal ID: ISSN 2470-0010; PRVDAQ; 114012
- Grant/Contract Number:
- AC05-06OR23177; SC0008791
- Resource Type:
- Published Article
- Journal Name:
- Physical Review D
- Additional Journal Information:
- Journal Name: Physical Review D Journal Volume: 97 Journal Issue: 11; Journal ID: ISSN 2470-0010
- Publisher:
- American Physical Society (APS)
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; quantum choromodynamics; strong interaction
Citation Formats
Guerrero, Juan V., and Accardi, Alberto. Gauge invariance and kaon production in deep inelastic scattering at low scales. United States: N. p., 2018.
Web. doi:10.1103/PhysRevD.97.114012.
Guerrero, Juan V., & Accardi, Alberto. Gauge invariance and kaon production in deep inelastic scattering at low scales. United States. doi:10.1103/PhysRevD.97.114012.
Guerrero, Juan V., and Accardi, Alberto. Fri .
"Gauge invariance and kaon production in deep inelastic scattering at low scales". United States. doi:10.1103/PhysRevD.97.114012.
@article{osti_1441070,
title = {Gauge invariance and kaon production in deep inelastic scattering at low scales},
author = {Guerrero, Juan V. and Accardi, Alberto},
abstractNote = {This work focuses on hadron mass effects in calculations of semi-inclusive kaon production in lepton-Deuteron deeply inelastic scattering at HERMES and COMPASS kinematics. In the collinear factorization framework, the corresponding cross section is shown to factorize, at leading order and leading twist, into products of parton distributions and fragmentation functions evaluated in terms of kaon- and nucleon-mass-dependent scaling variables, and to respect gauge invariance. It is found that hadron mass corrections for integrated kaon multiplicities sizeably reduce the apparent large discrepancy between measurements of K+ + K- multiplicities performed by the two collaborations, and fully reconcile their K+/K- ratios.},
doi = {10.1103/PhysRevD.97.114012},
journal = {Physical Review D},
number = 11,
volume = 97,
place = {United States},
year = {2018},
month = {6}
}
DOI: 10.1103/PhysRevD.97.114012
Web of Science
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