Gauge invariance and kaon production in deep inelastic scattering at low scales

doi:10.1103/PhysRevD.97.114012

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:

Guerrero, Juan V. ^[1];

^[1]

Thomas Jefferson National Accelerator Facility (TJNAF), Newport News, VA (United States); Hampton Univ., Hampton, VA (United States)

Publication Date:: 2018-06-08

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.

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                    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.

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                    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.

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@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}

}

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DOI: 10.1103/PhysRevD.97.114012

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Works referenced in this record:

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Reports on Progress in Physics, Vol. 82, Issue 4
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Title: Gauge invariance and kaon production in deep inelastic scattering at low scales

Abstract

Citation Formats

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Reply to “Comment on ‘Reevaluation of the parton distribution of strange quarks in the nucleon’”
journal, November 2015

Parton distribution functions, $α_{s}$ , and heavy-quark masses for LHC Run II
journal, July 2017

Comment on “Reevaluation of the parton distribution of strange quarks in the nucleon”
journal, November 2015

Unravelling higher twists
journal, February 1983

Multiplicities of charged pions and charged hadrons from deep-inelastic scattering of muons off an isoscalar target
journal, January 2017

Semi-inclusive deep inelastic scattering at small transverse momentum
journal, February 2007

Current fragmentation in semiinclusive leptoproduction
conference, January 2001

Parton distributions in the LHC era: MMHT 2014 PDFs
journal, May 2015

Global analysis of fragmentation functions for pions and kaons and their uncertainties
journal, June 2007

Hadron mass corrections in semi-inclusive deep inelastic scattering
journal, November 2009

A precision measurement of charm dimuon production in neutrino interactions from the NOMAD experiment
journal, November 2013

Measurement of the production of a W boson in association with a charm quark in pp collisions at $ \sqrt{s} $ = 7 TeV with the ATLAS detector
journal, May 2014

Probing the sea quark content of the proton with one-particle-inclusive processes
journal, November 2017

Problem of kinematic mass corrections for unpolarized semi-inclusive deep inelastic scattering
journal, November 2016

What are the low- $Q$ and large- $x$ boundaries of collinear QCD factorization theorems?
journal, May 2017

Hadron mass corrections in semi-inclusive deep-inelastic scattering
journal, September 2015

Twist-4 contributions to semi-inclusive deeply inelastic scatterings with polarized beam and target
journal, April 2017

Measurement of associated W + charm production in pp collisions at $ \sqrt{s} $ = 7 TeV
journal, February 2014

Multiplicities of charged kaons from deep-inelastic muon scattering off an isoscalar target
journal, April 2017

Strange sea determination from collider data
journal, February 2018

Isospin dependence of power corrections in deep inelastic scattering
journal, June 2004

Parton distributions for the LHC
journal, July 2009

Improved formulation of global QCD analysis with zero-mass hard cross sections
journal, June 2009

Measurement of parton distributions of strange quarks in the nucleon from charged-kaon production in deep-inelastic scattering on the deuteron
journal, September 2008

Reevaluation of the parton distribution of strange quarks in the nucleon
journal, May 2014

Determination of the fragmentation functions from an NLO QCD analysis of the HERMES data on pion multiplicities
journal, April 2016

Measurement of the muon charge asymmetry in inclusive $p p \to W + X$ production at $\sqrt{s} = 7 TeV$ and an improved determination of light parton distribution functions
journal, August 2014

Parton-to-kaon fragmentation revisited
journal, May 2017

Twist-4 contributions to the hadron structure functions
journal, July 1990

Parton distribution and decay functions
journal, January 1982

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