scholarly journals Swift GRBs and the blast wave model

2009 ◽  
Author(s):  
P. A. Curran ◽  
A. J. van der Horst ◽  
R. L. C. Starling ◽  
R. A. M. J. Wijers ◽  
Charles Meegan ◽  
...  
Keyword(s):  
Blast Wave ◽  
Wave Model

scholarly journals Analyzing Transverse Momentum Spectra of Pions, Kaons and Protons in p–p, p–A and A–A Collisions via the Blast-Wave Model with Fluctuations

Entropy ◽  
2021 ◽  
Vol 23 (7) ◽  
pp. 803
Author(s):  
Hai-Ling Lao ◽  
Fu-Hu Liu ◽  
Bo-Qiang Ma
Keyword(s):  
Transverse Momentum ◽  
Flow Velocity ◽  
Blast Wave ◽  
Proper Time ◽  
Wave Model ◽  
Transverse Flow ◽  
Momentum Spectra ◽  
Transverse Momentum Spectra ◽  
Transverse Flow Velocity ◽  
Freeze Out

The transverse momentum spectra of different types of particles, π±, K±, p and p¯, produced at mid-(pseudo)rapidity in different centrality lead–lead (Pb–Pb) collisions at 2.76 TeV; proton–lead (p–Pb) collisions at 5.02 TeV; xenon–xenon (Xe–Xe) collisions at 5.44 TeV; and proton–proton (p–p) collisions at 0.9, 2.76, 5.02, 7 and 13 TeV, were analyzed by the blast-wave model with fluctuations. With the experimental data measured by the ALICE and CMS Collaborations at the Large Hadron Collider (LHC), the kinetic freeze-out temperature, transverse flow velocity and proper time were extracted from fitting the transverse momentum spectra. In nucleus–nucleus (A–A) and proton–nucleus (p–A) collisions, the three parameters decrease with the decrease of event centrality from central to peripheral, indicating higher degrees of excitation, quicker expansion velocities and longer evolution times for central collisions. In p–p collisions, the kinetic freeze-out temperature is nearly invariant with the increase of energy, though the transverse flow velocity and proper time increase slightly, in the considered energy range.

scholarly journals Kinetic freeze-out conditions in nuclear collisions with 2A–158A GeV beam energy within a non-boost-invariant blast-wave model

2018 ◽  
Vol 98 (2) ◽  
Author(s):  
Sudhir Pandurang Rode ◽  
Partha Pratim Bhaduri ◽  
Amaresh Jaiswal ◽  
Ankhi Roy
Keyword(s):  
Blast Wave ◽  
Beam Energy ◽  
Wave Model ◽  
Nuclear Collisions ◽  
Freeze Out

Testing the Gamma‐Ray Burst Blast‐Wave Model: A Primer

2000 ◽  
Vol 127 (2) ◽  
pp. 283-285 ◽  
Author(s):  
A. Crider ◽  
E. P. Liang
Keyword(s):  
Blast Wave ◽  
Gamma Ray ◽  
Wave Model ◽  
Gamma Ray Burst

Average transverse expansion velocities and global freeze-out temperatures in central Cu + Cu, Au + Au, and Pb + Pb collisions at high energies at RHIC and LHC

2020 ◽  
Vol 35 (14) ◽  
pp. 2050115 ◽  
Author(s):  
Khusniddin K. Olimov ◽  
Shakhnoza Z. Kanokova ◽  
Kosim Olimov ◽  
Kadyr G. Gulamov ◽  
Bekhzod S. Yuldashev ◽  
...  
Keyword(s):  
Blast Wave ◽  
Heavy Ion Collisions ◽  
Wave Model ◽  
Heavy Ion ◽  
Transverse Flow ◽  
Collision System ◽  
Transverse Expansion ◽  
Ion Collisions ◽  
Charged Pions ◽  
Freeze Out

The experimental invariant transverse momentum [Formula: see text] spectra of the charged pions and kaons, protons and antiprotons, produced at midrapidity in central (0–10%) Au[Formula: see text]Au collisions at [Formula: see text], central (0–10%) Cu[Formula: see text]Cu collisions at [Formula: see text], central (0–10%) Au[Formula: see text]Au collisions at [Formula: see text], and central (0–5%) Pb[Formula: see text]Pb collisions at [Formula: see text], measured by BRAHMS, STAR and ALICE collaborations, were analyzed using three different transverse expansion (blast-wave) models: Siemens–Rasmussen blast-wave model, Simple transverse flow model, and Simplified (hydro-inspired) blast-wave model of Schnedermann et al. Combined (simultaneous) minimum [Formula: see text] fits of the experimental invariant [Formula: see text] spectra of the charged pions and kaons, protons and antiprotons with the above three model functions were conducted, using the identical selected optimal fitting ranges in [Formula: see text] in each studied collision system, and the values of the average transverse expansion velocity [Formula: see text] and global kinetic freeze-out temperature [Formula: see text] and their dependencies on the collision system [Formula: see text] and [Formula: see text] were extracted. The combined (simultaneous) fits using Hagedorn formula with the (embedded) simple transverse flow describe well the experimental invariant [Formula: see text] spectra of the charged pions, kaons, protons and antiprotons in the whole measured range in region [Formula: see text] in the analyzed central heavy ion collisions at RHIC and LHC, reproducing qualitatively well all the established dependencies of the parameters [Formula: see text] and [Formula: see text] on the collision system [Formula: see text] and [Formula: see text]. The obtained results were compared with those of the previous analyses of high energy heavy ion collisions.

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