publication . Other literature type . Article . Preprint . 2018

K− over K+ multiplicity ratio for kaons produced in DIS with a large fraction of the virtual-photon energy

J. Lichtenstadt; S. Huber; M. V. Zavertyaev; V. Jary; J. Nový; J. Nový; P. Jörg; V. Anosov; J. Smolik; D. Neyret; ...
Open Access
  • Published: 01 Jan 2018
  • Publisher: Elsevier BV
Abstract
The K$^{-}$ over K$^{+}$ multiplicity ratio is measured in deep-inelastic scattering, for the first time for kaons carrying a large fraction $z$ of the virtual-photon energy. The data were obtained by the COMPASS collaboration using a 160 GeV muon beam and an isoscalar $^6$LiD target. The regime of deep-inelastic scattering is ensured by requiring $Q^2>1$ (GeV/$c)^2$ for the photon virtuality and $W>5$ GeV/$c^2$ for the invariant mass of the produced hadronic system. Kaons are identified in the momentum range from 12 GeV/$c$ to 40 GeV/$c$, thereby restricting the range in Bjorken-$x$ to $0.01<x<0.40$. The $z$-dependence of the multiplicity ratio is studied for $...
Subjects
arXiv: High Energy Physics::ExperimentNuclear Experiment
free text keywords: Particle Physics - Experiment, hep-ph, Particle Physics - Phenomenology, hep-ex, experimental results, photon, CERN SPS, COMPASS, target: isoscalar, phase space, scaling: Bjorken, x-dependence, quark: fragmentation function, universality, quantum chromodynamics: perturbation theory, hadronization, perturbation theory: higher-order, muon+ nucleon: deep inelastic scattering, cross section: factorization, muon: beam, higher-order: 0, multiplicity: ratio, pi: multiplicity, charged particle: multiplicity, K: multiplicity, [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], [PHYS.HPHE]Physics [physics]/High Energy Physics - Phenomenology [hep-ph], High Energy Physics - Experiment, High Energy Physics - Phenomenology, Nuclear and High Energy Physics, QC1-999, [ PHYS.HEXP ] Physics [physics]/High Energy Physics - Experiment [hep-ex], [ PHYS.HPHE ] Physics [physics]/High Energy Physics - Phenomenology [hep-ph], 530, рассеяние, каоны, виртуальные фотоны, мюоны, multiplicity [K], multiplicity [charged particle], factorization [cross section], 0 [higher-order], ratio [multiplicity], deep inelastic scattering [muon+ nucleon], beam [muon], higher-order [perturbation theory], multiplicity [pi], perturbation theory [quantum chromodynamics], fragmentation function [quark], Bjorken [scaling], isoscalar [target], Virtual particle, Muon, Particle physics, Deep inelastic scattering, Isoscalar, Physics, Invariant mass, Quantum chromodynamics, Hadron, Multiplicity (mathematics), ddc:530
Funded by
EC| HADRONPHYSICS3
Project
HADRONPHYSICS3
Study of Strongly Interacting Matter
  • Funder: European Commission (EC)
  • Project Code: 283286
  • Funding stream: FP7 | SP4 | INFRA
,
NSF| A Program of Medium Energy Nuclear Physics
Project
  • Funder: National Science Foundation (NSF)
  • Project Code: 1506416
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