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@ARTICLE{Acharya:348435,
author = {Acharya, Shreyasi and others},
title = {{P}roduction of pions, kaons, and protons as a function of
the relative transverse activity classifier in pp collisions
at $ \sqrt{s} $ = 13 {T}e{V}},
journal = {Journal of high energy physics},
volume = {06},
number = {6},
issn = {1126-6708},
address = {[Trieste]},
publisher = {SISSA},
reportid = {GSI-2024-00271, arXiv:2301.10120. CERN-EP-2022-286},
pages = {27},
year = {2023},
note = {32 pages, 11 captioned figures, 3 tables, figures at
http://alice-publications.web.cern.ch/node/8869. This
article is distributed under the terms of the Creative
Commons Attribution License (CC-BY 4.0), which permits any
use, distribution and reproduction in any medium, provided
the original author(s) and source are credited. Funded by
SCOAP3},
abstract = {The production of π$^{±}$, K$^{±}$, and $
\left(\overline{\textrm{p}}\right)\textrm{p} $ is measured
in pp collisions at $ \sqrt{s} $ = 13 TeV in different
topological regions of the events. Particle transverse
momentum (p$_{T}$) spectra are measured in the “toward”,
“transverse”, and “away” angular regions defined
with respect to the direction of the leading particle in the
event. While the toward and away regions contain the
fragmentation products of the near-side and away-side jets,
respectively, the transverse region is dominated by
particles from the Underlying Event (UE). The relative
transverse activity classifier, R$_{T}$ =
N$_{T}$/〈N$_{T}$〉, is used to group events according to
their UE activity, where N$_{T}$ is the measured
charged-particle multiplicity per event in the transverse
region and 〈N$_{T}$〉 is the mean value over all the
analysed events. The first measurements of identified
particle p$_{T}$ spectra as a function of R$_{T}$ in the
three topological regions are reported. It is found that the
yield of high transverse momentum particles relative to the
R$_{T}$-integrated measurement decreases with increasing
R$_{T}$ in both the toward and the away regions, indicating
that the softer UE dominates particle production as R$_{T}$
increases and validating that R$_{T}$ can be used to control
the magnitude of the UE. Conversely, the spectral shapes in
the transverse region harden significantly with increasing
R$_{T}$. This hardening follows a mass ordering, being more
significant for heavier particles. Finally, it is observed
that the p$_{T}$-differential particle ratios $
\left(\textrm{p}+\overline{\textrm{p}}\right)/\left({\pi}^{+}+{\pi}^{-}\right)
$ and (K$^{+}$ + K$^{−}$)/(π$^{+}$ + π$^{−}$) in the
low UE limit (R$_{T}$ → 0) approach expectations from
Monte Carlo generators such as PYTHIA 8 with Monash 2013
tune and EPOS LHC, where the jet-fragmentation models have
been tuned to reproduce e$^{+}$e$^{−}$ results.},
keywords = {experimental results (INSPIRE) / data analysis method
(INSPIRE) / p p: scattering (INSPIRE) / charged particle:
multiplicity: measured (INSPIRE) / transverse momentum:
momentum spectrum (INSPIRE) / pi: production (INSPIRE) / K:
production (INSPIRE) / p: production (INSPIRE) / anti-p:
production (INSPIRE) / transverse (INSPIRE) / topological
(INSPIRE) / spectral (INSPIRE) / fragmentation (INSPIRE) /
Monte Carlo (INSPIRE) / underlying event (INSPIRE) / leading
particle (INSPIRE) / CERN LHC Coll (INSPIRE) / PYTHIA
(INSPIRE) / Hadron-Hadron Scattering (autogen)},
cin = {ALI / DTL / CIT / EXM / ALICE@CERN},
ddc = {530},
cid = {I:(DE-Ds200)ALI-20080822OR105 /
I:(DE-Ds200)DTL-20051214OR031 /
I:(DE-Ds200)CIT-20110310OR121 /
I:(DE-Ds200)EXM-20080818OR100 / I:(DE-Ds200)Coll-CERN-ALICE},
pnm = {612 - Cosmic Matter in the Laboratory (POF4-612) / HGS-HIRe
- HGS-HIRe for FAIR (HGS-HIRe) / SUC-GSI-Heidelberg -
Strategic university cooperation GSI-U Heidelberg
(SUC-GSI-HE) / SUC-GSI-Frankfurt - Strategic university
cooperation GSI-U Frankfurt/M (SUC-GSI-FR) /
SUC-GSI-Darmstadt - Strategic university cooperation GSI-TU
Darmstadt (SUC-GSI-DA)},
pid = {G:(DE-HGF)POF4-612 / G:(DE-Ds200)HGS-HIRe /
G:(DE-Ds200)SUC-GSI-HE / G:(DE-Ds200)SUC-GSI-FR /
G:(DE-Ds200)SUC-GSI-DA},
experiment = {EXP:(DE-H253)LHC-Exp-ALICE-20150101},
typ = {PUB:(DE-HGF)16},
eprint = {2301.10120},
howpublished = {arXiv:2301.10120},
archivePrefix = {arXiv},
SLACcitation = {$\%\%CITATION$ = $arXiv:2301.10120;\%\%$},
UT = {WOS:001035475300001},
doi = {10.1007/JHEP06(2023)027},
url = {https://repository.gsi.de/record/348435},
}