Production of light-flavor hadrons in pp collisions at $\sqrt{s}$ = 7 and $\sqrt{s}$ = 13 TeV

Abstract

The production of ${\pi }^{\pm }$, ${\mathrm{K}}^{\pm }$, ${\mathrm{K}}_{\mathrm{S}}^0$, ${\mathrm{K}}^{\ast }(892{)}^0$, $\mathrm{p}$, $\varphi (1020)$, $\Lambda$, ${\Xi }^{-}$, ${\Omega }^{-}$, and their antiparticles was measured in inelastic proton-proton (pp) collisions at a center-of-mass energy of $\sqrt{s}$ = 13 TeV at midrapidity ($|y|<0.5$) as a function of transverse momentum ($p_{\mathrm{T}}$) using the ALICE detector at the CERN LHC. Furthermore, the single-particle $p_{\mathrm{T}}$ distributions of ${\mathrm{K}}_{\mathrm{S}}^0$, $\Lambda$, and $\overline{\Lambda }$ in inelastic pp collisions at $\sqrt{s}$ = 7 TeV are reported here for the first time. The $p_{\mathrm{T}}$ distributions are studied at midrapidity within the transverse momentum range $0\le p_{\mathrm{T}}\le 20$ GeV/$c$, depending on the particle species. The $p_{\mathrm{T}}$ spectra, integrated yields, and particle yield ratios are discussed as a function of collision energy and compared with measurements at lower $\sqrt{s}$ and with results from various general-purpose QCD-inspired Monte Carlo models. A hardening of the spectra at high $p_{\mathrm{T}}$ with increasing collision energy is observed, which is similar for all particle species under study. The transverse mass and $x_{\mathrm{T}}\equiv 2p_{\mathrm{T}}/\sqrt{s}$ scaling properties of hadron production are also studied. As the collision energy increases from $\sqrt{s}$ = 7 to 13 TeV, the yields of non- and single-strange hadrons normalized to the pion yields remain approximately constant as a function of $\sqrt{s}$, while ratios for multi-strange hadrons indicate enhancements. The $p_{\mathrm{T}}$-differential cross sections of ${\pi }^{\pm }$, ${\mathrm{K}}^{\pm }$ and $\mathrm{p}$ ($\overline{\mathrm{p}}$) are compared with next-to-leading order perturbative QCD calculations, which are found to overestimate the cross sections for ${\pi }^{\pm }$ and $\mathrm{p}$ ($\overline{\mathrm{p}}$) at high $p_{\mathrm{T}}$.

54 pages, 18 figures, 8 tables, authors from page 49, published version, figures at http://alice-publications.web.cern.ch/node/6218

References in corpus (15)

• An Introduction to PYTHIA 8.2
• New parton distributions for collider physics
• Tuning PYTHIA 8.1: the Monash 2013 Tune
• Systematic Measurements of Identified Particle Spectra in pp, d+Au and Au+Au Collisions from STAR
• Global analysis of fragmentation functions for pions and kaons and their uncertainties
• Measurements of Strange Particle Production in $p+p$ Collisions at $\sqrt{s}$= 200 GeV
• Global Analysis of Fragmentation Functions for Protons and Charged Hadrons
• Parton-to-Pion Fragmentation Reloaded
• K*(892)${}^0$ and $\Phi$(1020) production in Pb-Pb collisions at $\sqrt{s_{\mathrm{NN}}}$ = 2.76 TeV
• Core-Corona Separation in Ultra-Relativistic Heavy Ion Collisions
• Inclusive cross section and double helicity asymmetry for π^0 production in p+p collisions at sqrt(s)=200 GeV: Implications for the polarized gluon distribution in the proton
• Non-perturbative QCD Effects and the Top Mass at the Tevatron
• Measurement of charged pion, kaon, and proton production in proton-proton collisions at sqrt(s) = 13 TeV
• Single inclusive pion pT-spectra in proton-proton collisions at sqrt(s) = 22.4GeV: data versus perturbative QCD calculations
• Transverse mass spectra and scaling of hadrons at RHIC and LHC energies

Cited by in corpus (47)

• The ALICE experiment: a journey through QCD
• Heavy quarks and jets as probes of the QGP
• Production of K${}^{\ast }(892{)}^0$ and $\varphi (1020)$ in pp and Pb-Pb collisions at $\sqrt{s_{\mathrm{NN}}}=5.02$ TeV
• Pseudorapidity distributions of charged particles as a function of mid and forward rapidity mutiplicities in pp collisions at $\sqrt{s}$ = 5.02, 7 and 13 TeV
• Pion Fragmentation Functions at High Energy Colliders
• Dynamics of Hot QCD Matter -- Current Status and Developments
• Global analysis of fragmentation functions to charged hadrons with high-precision data from the LHC
• Simultaneous Determination of Fragmentation Functions and Test on Momentum Sum Rule
• Collective expansion in pp collisions using the Tsallis statistics
• Study of flavor dependence of the baryon-to-meson ratio in proton-proton collisions at $\sqrt{s}=13$ TeV
• Neural Network QCD analysis of charged hadron Fragmentation Functions in the presence of SIDIS data
• Measurement of inclusive charged-particle b-jet production in pp and p-Pb collisions at $\sqrt{s_{\mathrm{NN}}}=5.02$ TeV
• Measurement of K${}^{\ast }$(892)${}^{\pm }$ production in inelastic pp collisions at the LHC
• K${}^{\ast }$(892)${}^{\pm }$ resonance production in Pb$-$Pb collisions at $\sqrt{s_{\mathrm{NN}}}$ = 5.02 TeV
• System size dependence of the hadronic rescattering effect at energies available at the CERN Large Hadron Collider
• Multiplicity and rapidity dependence of ${\mathrm{K}}^{\ast }(892{)}^0$ and $\varphi (1020)$ production in p-Pb collisions at $\sqrt{s_{\mathrm{NN}}}$ = 5.02 TeV
• ${\mathrm{K}}^{\ast }(892{)}^0$ and $\varphi (1020)$ production in p-Pb collisions at $\sqrt{s_{\mathrm{NN}}}$ = 8.16 TeV
• Measurement of electrons from beauty-hadron decays in pp and Pb-Pb collisions at $\sqrt{s_{\mathrm{NN}}}$ = 5.02 TeV
• K${}_{\mathrm{S}}^0$- and (anti-)$\Lambda$-hadron correlations in pp collisions at $\sqrt{s}=13$ TeV
• Azimuthal correlations of heavy-flavor hadron decay electrons with charged particles in pp and p-Pb collisions at $\sqrt{s_{\mathrm{NN}}}$ = 5.02 TeV
• Observation of abnormal suppression of ${\mathrm{f}}_0$(980) production in p$-$Pb collisions at $\sqrt{s_{\mathrm{NN}}}$ = 5.02 TeV
• Investigating the soft and hard limits in transverse momentum spectra in pp collisions
• Global analysis of fragmentation functions to light neutral hadrons
• Measurement of f${}_1$(1285) production in pp collisions at $\sqrt{\text{s}}$ = 13 TeV
• Underlying-event studies with strange hadrons in $pp$ collisions at $\sqrt{s}=13$ TeV with the ATLAS detector
• Data-driven precision determination of the material budget in ALICE
• X(2370) glueball-like particle productions in $e^{+}{e}^{-}$ collisions at the BESIII energy and in pp collisions at the LHC energy with PACIAE model
• Observation of suppressed charged-particle production in ultrarelativistic oxygen-oxygen collisions
• Particle production as a function of charged-particle flattenicity in pp collisions at $\sqrt{s}$ = 13 TeV
• Fragmentation Functions for ${\Xi }^{-}/{\bar{\Xi }}^{+}$ Using Neural Networks
• Observation of the $\Omega$(2012) baryon at the LHC
• Particle production at large $p_T$ in Xe+Xe collisions with jet quenching using the higher twist approach
• Direct-photon production in inelastic and high-multiplicity proton-proton collisions at $\sqrt{s}=$ 13 TeV
• Thermodynamical string fragmentation and string density effects in jets
• Soft QCD Physics at the LHC: highlights and opportunities
• ToMCCA: A Toy Monte Carlo Coalescence Afterburner
• Coalescence production of sexaquark with three diquarks in high-energy nuclear collisions
• Can Transverse Mass Scaling Shed Light on the Event-Activity Dependence of ${\rm Y}$ Mesons Production at LHC?
• Universality of scaled particle spectra in ultrarelativistic heavy-ion collisions
• Transverse momentum and multiplicity dependence of ${\Lambda }_c^{+}/D^0$ ratio in $pp$ collisions at $\sqrt{s}=13$ TeV
• Production of strange hadrons in jets and underlying events in pp and p-Pb collisions with ALICE
• Improving systematic uncertainties on precision two-body mass measurements
• First measurement of ${\mathrm{D}}_{s1}(1^{+})(2536{)}^{+}$ and ${\mathrm{D}}_{s2}^{\ast }(2^{+})(2573{)}^{+}$ production in proton-proton collisions at $\sqrt{s}=13$ TeV at the LHC
• System-size dependence of charged-particle suppression in ultrarelativistic nucleus-nucleus collisions
• Toward universal coalescence models for antideuteron production
• The domain of soft hadrons in transverse momentum space in high energy collisions
• Investigation of $T_{cs0}^{\ast }(2870{)}^0$ in $pp$ collisions at $\sqrt{s}$ = 7 TeV with the PACIAE model