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Title: 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:
 [1]; ORCiD logo [1]
  1. 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}
}

Journal Article:
Free Publicly Available Full Text
Publisher's Version of Record
DOI: 10.1103/PhysRevD.97.114012

Citation Metrics:
Cited by: 3 works
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    Works referencing / citing this record:

    The sea of quarks and antiquarks in the nucleon
    journal, March 2019