Boson interferometry in string fragmentation

1990 ◽  
Vol 47 (1) ◽  
pp. 137-139 ◽  
Author(s):  
Zs. Schram ◽  
K. Sailer ◽  
B. M�ller ◽  
W. Greiner
Keyword(s):  
String Fragmentation

STATUS OF FRAGMENTATION MODELS

1988 ◽  
Vol 03 (04) ◽  
pp. 751-823 ◽  
Author(s):  
TORBJÖRN SJÖSTRAND
Keyword(s):  
High Energy Physics ◽  
High Energy ◽  
Multiparticle Production ◽  
Theoretical Understanding ◽  
Strong Ties ◽  
Recent Developments ◽  
Hadronization Process ◽  
Cluster Fragmentation ◽  
String Fragmentation ◽  
Energy Physics

Phenomenological models of multiparticle production have become increasingly important for the interpretation of experimental data in high energy physics. The evolution of these models fills a gap left open by the present limited theoretical understanding of the hadronization process, i.e. the transformation of outgoing colored partons into color singlet hadrons. The three main schools of thought, string fragmentation, cluster fragmentation and independent fragmentation, are presented in this paper. Included are discussions on similarities and differences, successes and failures, and recent developments. Perturbative QCD aspects with strong ties to the multiparticle production picture are also covered, in particular parton showers. An account is given of experience gained in the comparison between data and models. Since fragmentation studies are particularly well developed for e+e− annihilation events, this field is described in detail. A few comments are also presented for leptoproduction and hadron collisions.

Effects of asymmetry in string fragmentation

1991 ◽  
Vol 208 (2) ◽  
pp. 402-413
Author(s):  
N.L Balazs ◽  
T Csörgő ◽  
B Lukács ◽  
J Zimányi
Keyword(s):  
String Fragmentation

scholarly journals Second stage string fragmentation model

1998 ◽  
Vol 58 (1) ◽  
Author(s):  
Thamar Al.-Aithan ◽  
Carl Rosenzweig
Keyword(s):  
Fragmentation Model ◽  
Second Stage ◽  
String Fragmentation

scholarly journals Baryon production in the string fragmentation picture

1997 ◽  
Vol 75 (1) ◽  
pp. 41-49 ◽  
Author(s):  
Patrik Edén ◽  
Gösta Gustafson
Keyword(s):  
Baryon Production ◽  
String Fragmentation

scholarly journals Enhancement of strange baryons in high-multiplicity proton–proton and proton–nucleus collisions

2018 ◽  
Vol 2018 (12) ◽  
Author(s):  
Yuuka Kanakubo ◽  
Michito Okai ◽  
Yasuki Tachibana ◽  
Tetsufumi Hirano
Keyword(s):  
Transverse Momentum ◽  
Hadron Collider ◽  
Gluon Plasma ◽  
Hydrodynamic Equations ◽  
Hydrodynamic Models ◽  
Proton Proton ◽  
The Core ◽  
Strange Baryons ◽  
Charged Pions ◽  
String Fragmentation

Abstract We investigate the enhancement of yields of strange and multi-strange baryons in proton–proton (p+p), proton–lead (p+Pb), and lead–lead (Pb+Pb) collisions at Large Hadron Collider (LHC) energies from a dynamical core–corona initialization model. We first generate partons just after the collisions by using event generators. These partons dynamically generate the quark gluon plasma (QGP) fluids through the source terms in the hydrodynamic equations. According to the core–corona picture, this process tends to happen where the density of generated partons is high and their transverse momentum is low. Some partons do not fully participate in this process when they are in dilute regions or their transverse momentum is high, and subsequently fragment into hadrons through string fragmentation. In this framework, the final hadrons come from either chemically equilibrated fluids as in the conventional hydrodynamic models or string fragmentation. We calculate the ratio of strange baryons to charged pions as a function of multiplicity and find that it monotonically increases up to $dN_{\mathrm{ch}}/d\eta \sim 100$ and then saturates above. This suggests that the QGP fluids are partly created and that their fraction increases with multiplicity in p+p and p+Pb collisions at LHC energies.

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