Logo del repository
  1. Home
 
Opzioni

Forward-backward multiplicity correlations in pp collisions at √s = 0.9, 2.76 and 7 TeV

Adam, J.
•
Adamová, D.
•
Aggarwal, M. M.
altro
Zyzak, M.
2015
  • journal article

Periodico
JOURNAL OF HIGH ENERGY PHYSICS
Abstract
The strength of forward-backward (FB) multiplicity correlations is measured by the ALICE detector in proton-proton (pp) collisions at √s = 0.9, 2.76 and 7TeV. The measurement is performed in the central pseudorapidity region (|η| < 0.8) for the transverse momentum pT > 0.3GeV/c. Two separate pseudorapidity windows of width (δη) ranging from 0.2 to 0.8 are chosen symmetrically around η = 0. The multiplicity correlation strength (bcorr) is studied as a function of the pseudorapidity gap (ηgap) between the two windows as well as the width of these windows. The correlation strength is found to decrease with increasing ηgap and shows a non-linear increase with δη. A sizable increase of the correlation strength with the collision energy, which cannot be explained exclusively by the increase of the mean multiplicity inside the windows, is observed. The correlation coefficient is also measured for multiplicities in different configurations of two azimuthal sectors selected within the symmetric FB η-windows. Two different contributions, the short-range (SR) and the long-range (LR), are observed. The energy dependence of bcorr is found to be weak for the SR component while it is strong for the LR component. Moreover, the correlation coefficient is studied for particles belonging to various transverse momentum intervals chosen to have the same mean multiplicity. Both SR and LR contributions to bcorr are found to increase with pT in this case. Results are compared to PYTHIA and PHOJET event generators and to a string-based phenomenological model. The observed dependencies of bcorr add new constraints on phenomenological models.
DOI
10.1007/JHEP05(2015)097
WOS
WOS:000355949100001
Archivio
http://hdl.handle.net/11368/2841288
info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-84930225537
http://link.springer.com/article/10.1007%2FJHEP05%282015%29097
Diritti
open access
license:digital rights management non definito
FVG url
https://arts.units.it/bitstream/11368/2841288/2/Forward-backward multiplicity correlations in pp collisions at â s = 0.9, 2.76 and 7 TeV.pdf
Soggetti
  • ALICE

  • LHC

  • p-p collision

  • multiplicity correlat...

Web of Science© citazioni
31
Data di acquisizione
Mar 26, 2024
Visualizzazioni
2
Data di acquisizione
Apr 19, 2024
Vedi dettagli
google-scholar
Get Involved!
  • Source Code
  • Documentation
  • Slack Channel
Make it your own

DSpace-CRIS can be extensively configured to meet your needs. Decide which information need to be collected and available with fine-grained security. Start updating the theme to match your nstitution's web identity.

Need professional help?

The original creators of DSpace-CRIS at 4Science can take your project to the next level, get in touch!

Realizzato con Software DSpace-CRIS - Estensione mantenuta e ottimizzata da 4Science

  • Impostazioni dei cookie
  • Informativa sulla privacy
  • Accordo con l'utente finale
  • Invia il tuo Feedback