English
Related papers

Related papers: String Formation Beyond Leading Colour

200 papers

The hadronization effects induced by various colour connections of the four quark system in $e^{+}e^{-}$ annihilation are briefly reviewed. A special colour connection of four heavy quark system without colour-separation favours the…

High Energy Physics - Phenomenology · Physics 2015-06-17 Yi Jin , Shi-Yuan Li , Zong-Guo Si , Zhong-Juan Yang , Tao Yao

We revisit the recipe for hadron formation in the Lund string hadronization model. Given an incoming quark or quark-diquark pair, weights for hadron formation are updated to take hyperfine splitting effects arising from the mass difference…

High Energy Physics - Phenomenology · Physics 2022-03-30 Christian Bierlich , Smita Chakraborty , Gösta Gustafson , Leif Lönnblad

We develop and extend the dynamical string parton model. This model, which is based on the salient features of QCD, uses classical Nambu-Got\=o strings with the endpoints identified as partons, an invariant string breaking model of the…

Nuclear Theory · Physics 2009-11-06 D. E. Malov , A. S. Umar , D. J. Ernst , D. J. Dean

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

The dynamics of partons, hadrons and strings in relativistic nucleus-nucleus collisions is analyzed within the novel Parton-Hadron-String Dynamics (PHSD) transport approach, which is applied to Pb+Pb collisions from 20 to 160 A GeV in order…

Nuclear Theory · Physics 2009-11-23 W. Cassing , E. L. Bratkovskaya

We revisit our rope model for string fragmentation that has been shown to give a reasonable description of strangeness and baryon enhancement in high-multiplicity pp events at the LHC. A key feature of the model is that the enhancement is…

High Energy Physics - Phenomenology · Physics 2022-08-17 Christian Bierlich , Smita Chakraborty , Gösta Gustafson , Leif Lönnblad

We present the results from our investigation of angular correlations between baryon pairs in the PYTHIA8 event generator. We show how colour reconnection models and hadronization mechanisms influence such angular correlations and in…

High Energy Physics - Phenomenology · Physics 2024-03-26 Leif Lönnblad , Harsh Shah

$SU(N_c)$ colour-singlet restriction, along with flavour and spin symmetry, on thermal partonic ensemble is shown to recombine the partons with internal colour structure into colour-singlet multi-quark clusters which can be identified with…

High Energy Physics - Phenomenology · Physics 2009-12-14 Raktim Abir , Munshi G. Mustafa

Production of pions in high-energy collisions with nuclei in the kinematics prohibited for free nucleons ("cumulative pions") is studied in the fusing color string model.The model describes the so-called direct mechanism for cumulative…

High Energy Physics - Phenomenology · Physics 2023-03-31 M. A. Braun

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

We propose a further development of a multi-pomeron exchange model of pp and p$\bar p$ collisions at high energy. The model describes consistently multiplicity, transverse momentum of charged particles and their correlation in wide energy…

High Energy Physics - Phenomenology · Physics 2017-10-25 G. Feofilov , V. Kovalenko , A. Puchkov

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

The inclusion of string fusion in Dual Parton Model results in the appearance of diquark-antidiquark pairs in the sea with comparatively large Feynman-$x$. Such antidiquarks can fragment into fast antibaryons, thus increasing several times…

High Energy Physics - Phenomenology · Physics 2007-05-23 N. Armesto , E. G. Ferreiro , C. Pajares , Yu. M. Shabelski

The $\bar{\Omega}/\Omega$ ratio originating from string decays is predicted to be larger than unity in proton proton interactions at SPS energies ($E_{\rm lab}$=160 GeV). The anti-omega dominance increases with decreasing beam energy. This…

High Energy Physics - Phenomenology · Physics 2009-11-07 M. Bleicher , F. M. Liu , A. Keränen , J. Aichelin , S. A. Bass , F. Becattini , K. Redlich , K. Werner

We extend the scaling behaviour observed in the inclusive charged hadron transverse momentum ($p_{T}$) distributions to the $p_{T}$ spectra of pions, kaons and protons produced in proton-proton ($pp$) collisions with center of mass energies…

High Energy Physics - Phenomenology · Physics 2015-12-10 W. C. Zhang

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

A quark coalescence model is presented based on semi-relativistic molecular dynamics with color interactions among quarks taken into account and applied to $pp$ collisions to study the effects of this model. A phenomenological potential…

High Energy Physics - Phenomenology · Physics 2019-05-22 Guang-Lei Li , Chun-Bin Yang

The process of secondary baryon production in pi(+-)p collisions at high energies in the central and forward fragmentation regions is considered in the framework of the Quark-Gluon String Model. The contribution of the string-junction…

High Energy Physics - Phenomenology · Physics 2008-11-26 G. H. Arakelyan , C. Merino , Yu. M. Shabelski

Hyperon and antihyperon production is investigated using two microscopical models: {\bf (1)} the fast hadronization of quark matter as given by the ALCOR model; {\bf (2)} string formation and fragmentation as in the HIJING/B model. We…

High Energy Physics - Phenomenology · Physics 2008-11-26 P. Csizmadia , P. Levai , S. E. Vance T. S. Biro , M. Gyulassy , J. Zimanyi

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