skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Possible Implication of a Single Nonextensive p_T Distribution for Hadron Production in High-Energy pp Collisions

Abstract

Multiparticle production processes in $pp$ collisions at the central rapidity region are usually considered to be divided into independent "soft" and "hard" components. The first is described by exponential (thermal-like) transverse momentum spectra in the low-$$p_T$$ region with a scale parameter $T$ associated with the temperature of the hadronizing system. The second is governed by a power-like distributions of transverse momenta with power index $n$ at high-$$p_T$$ associated with the hard scattering between partons. We show that the hard-scattering integral can be approximated as a nonextensive distribution of a quasi-power-law containing a scale parameter $T$ and a power index $n=1/(q -1)$, where $q$ is the nonextensivity parameter. We demonstrate that the whole region of transverse momenta presently measurable at LHC experiments at central rapidity (in which the observed cross sections varies by $14$ orders of magnitude down to the low $$p_T$$ region) can be adequately described by a single nonextensive distribution. These results suggest the dominance of the hard-scattering hadron-production process and the approximate validity of a ``no-hair" statistical-mechanical description of the $$p_T$$ spectra for the whole $$p_T$$ region at central rapidity for $pp$ collisions at high-energies.

Authors:
 [1];  [2];  [3];  [4]
  1. ORNL
  2. National Centre for Nuclear Research, Warsaw, Poland
  3. Centro Brasileiro de Pesquisas Físicas (CBPF), Brazil
  4. Centro Brasileiro de Pesquisas Fisicas, Brazil
Publication Date:
Research Org.:
Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
Sponsoring Org.:
USDOE Office of Science (SC)
OSTI Identifier:
1185827
DOE Contract Number:
DE-AC05-00OR22725
Resource Type:
Conference
Resource Relation:
Conference: XLIV International Symposium on Multiparticle Dynamics, Bologna, Italy, 20140908, 20140912
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS

Citation Formats

Wong, Cheuk-Yin, Wilk, Grzegorz, Cirto, Leonardo J. L., and Tsallis, Constantino. Possible Implication of a Single Nonextensive p_T Distribution for Hadron Production in High-Energy pp Collisions. United States: N. p., 2015. Web.
Wong, Cheuk-Yin, Wilk, Grzegorz, Cirto, Leonardo J. L., & Tsallis, Constantino. Possible Implication of a Single Nonextensive p_T Distribution for Hadron Production in High-Energy pp Collisions. United States.
Wong, Cheuk-Yin, Wilk, Grzegorz, Cirto, Leonardo J. L., and Tsallis, Constantino. Thu . "Possible Implication of a Single Nonextensive p_T Distribution for Hadron Production in High-Energy pp Collisions". United States. doi:.
@article{osti_1185827,
title = {Possible Implication of a Single Nonextensive p_T Distribution for Hadron Production in High-Energy pp Collisions},
author = {Wong, Cheuk-Yin and Wilk, Grzegorz and Cirto, Leonardo J. L. and Tsallis, Constantino},
abstractNote = {Multiparticle production processes in $pp$ collisions at the central rapidity region are usually considered to be divided into independent "soft" and "hard" components. The first is described by exponential (thermal-like) transverse momentum spectra in the low-$p_T$ region with a scale parameter $T$ associated with the temperature of the hadronizing system. The second is governed by a power-like distributions of transverse momenta with power index $n$ at high-$p_T$ associated with the hard scattering between partons. We show that the hard-scattering integral can be approximated as a nonextensive distribution of a quasi-power-law containing a scale parameter $T$ and a power index $n=1/(q -1)$, where $q$ is the nonextensivity parameter. We demonstrate that the whole region of transverse momenta presently measurable at LHC experiments at central rapidity (in which the observed cross sections varies by $14$ orders of magnitude down to the low $p_T$ region) can be adequately described by a single nonextensive distribution. These results suggest the dominance of the hard-scattering hadron-production process and the approximate validity of a ``no-hair" statistical-mechanical description of the $p_T$ spectra for the whole $p_T$ region at central rapidity for $pp$ collisions at high-energies.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Thu Jan 01 00:00:00 EST 2015},
month = {Thu Jan 01 00:00:00 EST 2015}
}

Conference:
Other availability
Please see Document Availability for additional information on obtaining the full-text document. Library patrons may search WorldCat to identify libraries that hold this conference proceeding.

Save / Share: