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Data from the LHC show a rise in strange-hadron production with charged-particle multiplicity in pp collisions. The Monte-Carlo event generator PYTHIA, using its default Monash tune, instead predicts constant strangeness. We investigate a…

High Energy Physics - Phenomenology · Physics 2026-03-02 Javira Altmann , Lorenzo Bernardinis , Peter Skands , Valentina Zaccolo

The increase of strange-particle yields relative to pions versus charged-particle multiplicity in proton-proton (pp) collisions at the LHC is usually described by microscopic or hydrodynamical models as a result of the increasing density of…

High Energy Physics - Phenomenology · Physics 2021-09-14 Constantin Loizides , Andreas Morsch

Enhancement in strangeness yields in heavy-ion collisions is regarded as one of the attributes of the Quark-Gluon Plasma (QGP) along with jet quenching and final-state collectivity. To reproduce these effects in the MC implementation of the…

High Energy Physics - Phenomenology · Physics 2022-02-08 Smita Chakraborty

We present novel rope hadronization results for strange hadron enhancement in pp, pPb, and PbPb collisions using PYTHIA/Angantyr at LHC energies. With the rope model for string fragmentation, we find that the strangeness and baryon…

High Energy Physics - Phenomenology · Physics 2022-11-16 Christian Bierlich , Smita Chakraborty , Gösta Gustafson , Leif Lönnblad

In models for hadron collisions based on string hadronization, the strings are usually treated as independent, allowing no interaction between the confined colour fields. In studies of nucleus collisions it has been suggested that strings…

High Energy Physics - Phenomenology · Physics 2015-02-16 Christian Bierlich , Gösta Gustafson , Leif Lönnblad , Andrey Tarasov

We present a systematic study on the strange particle production at the Large Hadron Collider (LHC) in proton-proton (pp) collisions at $\sqrt{s}=$ 7 TeV based on PACIAE simulations. Two different mechanisms accounting for single string…

High Energy Physics - Phenomenology · Physics 2018-10-02 Liang Zheng , Dai-Mei Zhou , Zhong-Bao Yin , Yu-Liang Yan , Gang Chen , Xu Cai , Ben-Hao Sa

The p$-$p collisions at high multiplicity at LHC show small scale collective effects similar to that observed in heavy ion collisions such as enhanced production of strange and multi-strange hadrons, long range azimuthal correlations, etc.…

High Energy Physics - Phenomenology · Physics 2019-10-30 Ranjit Nayak , Subhadip Pal , Sadhana Dash

Strange hadron production in pp collisions at $\sqrt{s}~=~7$ TeV is studied in jets and underlying events using the PYTHIA8 event generator. Matching strange hadrons to the jet area and the underlying event area is expected to help us…

High Energy Physics - Phenomenology · Physics 2022-03-28 Pengyao Cui , Zhongbao Yin , Liang Zheng

The effects of string fusion on the correlations in strange particles production in proton-proton collisions at high energy are studied in the framework of a Monte Carlo string-parton model. The model is based on the strings formation in…

High Energy Physics - Phenomenology · Physics 2016-01-26 Vladimir Kovalenko , Vladimir Vechernin

In relativistic heavy-ion collisions, the formation of a deconfined and thermalized state of partons, known as quark-gluon plasma (QGP), leads to enhanced production of strange hadrons in contrast to proton-proton (pp) collisions, which are…

High Energy Physics - Phenomenology · Physics 2025-04-08 Suraj Prasad , Bhagyarathi Sahoo , Sushanta Tripathy , Neelkamal Mallick , Raghunath Sahoo

The angular correlations between charged $\Xi$ baryons and associated identified hadrons (pions, kaons, protons, $\Lambda$ baryons, and $\Xi$ baryons) are measured in pp collisions at $\sqrt{s} = 13$ TeV with the ALICE detector to give…

High Energy Physics - Experiment · Physics 2024-09-30 ALICE Collaboration

One of the key results of the LHC Run 1 was the observation of an enhanced production of strange particles in high multiplicity pp and p--Pb collisions at $\sqrt{s_\mathrm{NN}}$ = 7 and 5.02 TeV, respectively. The strangeness enhancement is…

High Energy Physics - Experiment · Physics 2019-02-20 Ajay Kumar Dash

Rope Hadronization is a model extending the Lund string hadronization model to describe environments with many overlapping strings, such as high multiplicity pp collisions or $AA$ collisions. Including effects of Rope Hadronization…

Nuclear Theory · Physics 2018-03-14 Christian Bierlich

It has been proposed to search for thermal and collective properties arising from parton-fragmentation processes by examining high jet charged-constituent multiplicities ($N_{\rm j,ch}$) in proton-proton (pp) collisions. This proposal was…

High Energy Physics - Phenomenology · Physics 2025-08-27 Robert Vertesi , Antonio Ortiz

The centrality dependence of (multi-)strange hadron abundances is studied for Pb(158 AGeV)Pb reactions and compared to p(158 GeV)Pb collisions. The microscopic transport model UrQMD is used for this analysis. The predicted Lambda/pi-,…

Strange hadron production in pp collisions at $\sqrt{s}= 7$ TeV is studied with PYTHIA 8 and EPOS event generators via the two-particle correlation method. After pairing charged particles as trigger particles with associated strange hadrons…

High Energy Physics - Phenomenology · Physics 2022-11-15 M. N. Anaam , Liang Zheng , H. M. Alfanda , Zhongbao Yin

We study string fragmentation in high multiplicity proton-proton collisions in a model where the string tension fluctuates. These fluctuations produce exponential pion spectra which are fitted to the transverse momentum distributions of…

High Energy Physics - Phenomenology · Physics 2020-06-30 H. J. Pirner , B. Z. Kopeliovich , K. Reygers

These proceedings summarise recent measurements of angular correlations between the $\Xi$ baryon and identified hadrons in pp collisions at $\sqrt{s}=13\,\mathrm{TeV}$ using the ALICE detector. The results are compared with both…

High Energy Physics - Experiment · Physics 2022-02-16 Jonatan Adolfsson

We present a systematic study on the strange and multi-strange particles production in Pb+Pb collisions at $\sqrt{S_{NN}} = 2.76$ TeV based on the PACIAE model simulations. Two different mechanisms, namely the single string structure…

Nuclear Theory · Physics 2020-10-21 Dai-Mei Zhou , Liang Zheng , Zhi-Hong Song , Yu-Liang Yan , Gang Chen , Xiao-Mei Li , Xu Cai , Ben-Hao Sa

Strange particles are produced only during high-energy collisions and carry important information regarding collision dynamics. Recent results by the ALICE Collaboration on strangeness enhancement in high-multiplicity p+p collisions have…

High Energy Physics - Phenomenology · Physics 2024-04-12 Hushnud Hushnud , Kalyan Dey
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