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The pseudorapidity density distributions of charged particles and the transverse momentum spectra of identified particles in proton-proton (pp) collisions at the center-of-mass energies ranging from $\sqrt{s}=200$ GeV to 13 TeV have been…

高能物理 - 唯象学 · 物理学 2025-07-17 Z. Xie , A. K. Lei , H. Zheng , W. C. Zhang , D. M. Zhou , Z. L. She , Y. L. Yan , B. H. Sa

We investigate the particle production in proton-antiproton ($p\bar{p}$) collisions using the PACIAE 4.0 model. The pseudorapidity density distributions ($dN_{\text{ch}}/d\eta$) and transverse momentum ($p_T$) spectra of charged particles…

高能物理 - 唯象学 · 物理学 2026-03-13 Z. Xie , A. K. Lei , H. Zheng , W. C. Zhang , D. M. Zhou , Z. L. She , Y. L. Yan , B. H. Sa

The multiplicity dependence of the pseudorapidity density of charged particles in proton-proton (pp) collisions at centre-of-mass energies $\sqrt{s}$ = 5.02, 7 and 13 TeV measured by ALICE is reported. The analysis relies on track segments…

核实验 · 物理学 2021-12-10 ALICE Collaboration

We report the predictions of different Monte Carlo event generators including HIJING, Pythia, and QGSJETII in comparison with the experimental data measured by the CMS Collaboration at CERN in proton-proton ($pp$) collisions at…

高能物理 - 唯象学 · 物理学 2022-04-25 Pei-Pin Yang , Muhammad Ajaz , Muhammad Waqas , Fu-Hu Liu , Mais K. Suleymanov

In this work we investigate the $J/\psi$ production in proton-proton collisions at the center-of-mass energy ($\sqrt{s}$) equal to 2.76, 5.02, 7, 8 and 13 TeV with a parton and hadron cascade model PACIAE 2.2a. It is based on PYTHIA but…

高能物理 - 唯象学 · 物理学 2025-10-15 Kai-Fan Ye , Qiang Wang , Jia-Hao Shi , Zhi-Ying Qin , Wen-Chao Zhang , An-Ke Lei , Zhi-Lei She , Yu-Liang Yan , Ben-Hao Sa

Pseudorapidity, transverse momentum, and multiplicity distributions are measured in the pseudorapidity range $|\eta| <$ 2.4 for charged particles with transverse momenta satisfying $p_\mathrm{T} >$ 0.5 GeV in proton-proton collisions at a…

高能物理 - 实验 · 物理学 2018-09-05 CMS Collaboration

We investigate the inclusive $J/\psi$ production in proton-proton (pp) collisions at center-of-mass energies $\sqrt{s} = 5.02$, 7, and 13 TeV using the PACIAE 4.0 model. This model extends PYTHIA 8.3 by incorporating partonic and hadronic…

高能物理 - 唯象学 · 物理学 2026-04-22 Jin-Peng Zhang , Guan-Yu Wang , Wen-Chao Zhang , Bo Feng , An-Ke Lei , Zhi-Lei She , Hua Zheng , Dai-Mei Zhou , Yu-Liang Yan , Ben-Hao Sa

Results are reported from a search for new physics processes in events containing a single isolated high-transverse-momentum lepton (electron or muon), energetic jets, and large missing transverse momentum. The analysis is based on a 4.98…

高能物理 - 实验 · 物理学 2013-05-14 The CMS Collaboration

The pseudorapidity distributions of charged hadrons in proton-lead collisions at nucleon-nucleon center-of-mass energies $\sqrt{s_{_\mathrm{NN}}} =$ 5.02 and 8.16 TeV are presented. The measurements are based on data samples collected by…

高能物理 - 实验 · 物理学 2018-04-06 CMS Collaboration

The pseudorapidity density of charged particles with minimum transverse momentum ($p_{\rm T}$) thresholds of 0.15, 0.5, 1, and 2 GeV$/c$ is measured in pp collisions at the centre of mass energies of $\sqrt{s} =$ 5.02 and 13 TeV with the…

核实验 · 物理学 2023-10-13 ALICE Collaboration

A dynamically constrained coalescence model based on the phase space quantization and classical limit method was proposed to investigate the production of light nuclei (anti-nuclei) in non-single diffractive (NSD) pp collisions at…

核理论 · 物理学 2015-05-28 Yu-Liang Yan , Gang Chen , Xiao-Mei Li , Dai-Mei Zhou , Mei-Juan Wang , Shou-Yang Hu , Li Ye , Ben-Hao Sa

A study of two-particle differential number ($B$) and transverse momentum ($P_{2}^\mathrm{CD}$) balance functions in photon-proton ($\gamma p$) and proton-proton (pp) collisions at $\sqrt{s}=$ 5.36 TeV is presented. The analysis focuses on…

核实验 · 物理学 2026-02-25 Subash Chandra Behera , Dukhishyam Mallick

The charged-particle pseudorapidity density measured over 4 units of pseudorapidity in non-single-diffractive (NSD) p-Pb collisions at a centre-of-mass energy per nucleon pair $\sqrt{s_{\rm NN}} = 5.02$ TeV is presented. The average value…

核实验 · 物理学 2016-06-24 ALICE Collaboration

This article presents the measurement of charged-particle pseudorapidity ($\eta$) density, $\mathrm{d}N_{\rm ch}/\mathrm{d}\eta$, in proton$-$proton (pp) collisions at a centre-of-mass energy $\sqrt{s}$ = 13.6 TeV, and in lead$-$lead…

核实验 · 物理学 2024-09-30 Abhi Modak

The pseudorapidity ($\eta$) and transverse-momentum ($p_{\rm T}$) distributions of charged particles produced in proton-proton collisions are measured at the centre-of-mass energy $\sqrt{s}$ = 13 TeV. The pseudorapidity distribution in…

核实验 · 物理学 2016-03-18 ALICE Collaboration

Proton-Proton ($pp$) collisions at the Large Hadron Collider (LHC) are simulated in order to study events with a high local density of charged particles produced in narrow pseudorapidty windows of $\Delta\eta$ = 0.1, 0.2, and 0.5. The $pp$…

高能物理 - 实验 · 物理学 2020-10-23 E. Shokr , A. H. El-Farrash , A. De Roeck , M. A. Mahmoud

The measured pseudorapidity distributions of primary charged particles are presented for d + Au and p + p collisions at ${\sqrt{s_{_{NN}}} =}$ 200 GeV over a wide pseudorapidity range of ${\rm \mid \eta \mid \le}$ 5.4. The results for d +…

核实验 · 物理学 2008-11-26 Rachid Nouicer

Pseudorapidity (eta) distributions of charged particles produced in proton-proton collisions at a centre-of-mass energy of 8 TeV are measured in the ranges abs(eta) < 2.2 and 5.3 < abs(eta) < 6.4 covered by the CMS and TOTEM detectors,…

高能物理 - 实验 · 物理学 2014-11-06 The CMS collaboration , The TOTEM Collaboration

The pseudorapidity distribution of charged hadrons in pp collisions at sqrt(s) =13 TeV is measured using a data sample obtained with the CMS detector, operated at zero magnetic field, at the CERN LHC. The yield of primary charged long-lived…

高能物理 - 实验 · 物理学 2015-11-12 CMS Collaboration

The first measurements of the charged-particle pseudorapidity density, ${\rm d}N_{\rm{ch}}/{\rm d}\eta$, in proton-proton (pp) collisions at $\sqrt{s} =$ 13.6 TeV and in lead-lead (Pb-Pb) collisions at $\sqrt{s_{\rm{NN}}} = $ 5.36 TeV are…

核实验 · 物理学 2025-06-19 Tulika Tripathy
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