Bose-Einstein correlations of same-sign charged pions in the forward region in pp collisions at √s=7 TeV

Research output: Contribution to journalArticlepeer-review

Authors

  • R. Aaij
  • B. Adeva
  • M. Adinolfi
  • Z. Ajaltouni
  • S. Akar
  • J. Albrecht
  • F. Alessio
  • M. Alexander
  • A. Alfonso Albero
  • S. Ali
  • G. Alkhazov
  • P. Alvarez Cartelle
  • A. A. Alves
  • S. Amato
  • S. Amerio
  • Y. Amhis
  • L. An
  • L. Anderlini
  • G. Andreassi
  • M. Andreotti
  • J. E. Andrews
  • R. B. Appleby
  • F. Archilli
  • P. d’Argent
  • J. Arnau Romeu
  • A. Artamonov
  • M. Artuso
  • E. Aslanides
  • G. Auriemma
  • M. Baalouch
  • I. Babuschkin
  • S. Bachmann
  • J. J. Back
  • A. Badalov
  • C. Baesso
  • S. Baker
  • V. Balagura
  • W. Baldini
  • A. Baranov
  • Simone Bifani
  • R. Calladine
  • G. Chatzikonstantinidis
  • N. Farley
  • Cristina Lazzeroni
  • A. Mazurov
  • Antonino Sergi
  • Nigel Watson
  • Matt Williams
  • T. Williams
  • K. A. Zarebski
  • LHCb Collaboration

Colleges, School and Institutes

External organisations

  • Laboratory of Photonics and Interfaces, Department de Chimie, Ecole Polytechnique Federale de Lausanne
  • European Organization for Nuclear Research (CERN)
  • Universidad de Santiago de Compostela
  • BRISTOL UNIVERSITY
  • LPC
  • University of Cincinnati
  • Technische Universität Dortmund
  • University of Glasgow
  • Universitat Autònoma de Barcelona
  • Nikhef National Institute for Subatomic Physics
  • Petersburg Nuclear Physics Institute (PNPI)
  • Imperial College London
  • Universidade Federal Do Rio de Janeiro (UFRJ)
  • Department of Physics and Astronomy and INFN
  • IN2P3
  • Tsinghua University
  • Department of Biology and Evolution; University of Ferrara; Ferrara; Italy
  • University of Maryland, College Park, Maryland 20742 USA
  • University of Manchester
  • Ruprecht-Karls-Universität Heidelberg
  • CNRS/IN2P3
  • Institute for High Energy Physics (IHEP)
  • Syracuse University, Syracuse, New York 13244, USA
  • THE UNIVERSITY OF WARWICK
  • Universitat Ramon Llull
  • Pontifícia Universidade Católica Do Rio de Janeiro (PUC-Rio)
  • Laboratoire Leprince-Ringuet
  • Yandex School of Data Analysis

Abstract

Bose-Einstein correlations of same-sign charged pions, produced in proton-proton collisions at a 7 TeV centre-of-mass energy, are studied using a data sample collected by the LHCb experiment. The signature for Bose-Einstein correlations is observed in the form of an enhancement of pairs of like-sign charged pions with small four-momentum difference squared. The charged-particle multiplicity dependence of the Bose-Einstein correlation parameters describing the correlation strength and the size of the emitting source is investigated, determining both the correlation radius and the chaoticity parameter. The measured correlation radius is found to increase as a function of increasing charged-particle multiplicity, while the chaoticity parameter is seen to decrease.

Details

Original languageEnglish
Article number25
JournalJournal of High Energy Physics
Volume2017
Issue number12
Publication statusPublished - 6 Dec 2017

Keywords

  • Hadron-Hadron scattering (experiments), Particle correlations and fluctuations, QCD

ASJC Scopus subject areas