Comparison of Proton Momentum Spectra in Proton-Proton Collisions Involving Pion and Kaon Production

1970 ◽  
Vol 25 (2) ◽  
pp. 126-129 ◽  
Author(s):  
M. A. Abolins ◽  
G. A. Smith ◽  
Z. Ming Ma ◽  
Eugene Gellert ◽  
A. B. Wicklund
2010 ◽  
Vol 693 (2) ◽  
pp. 53-68 ◽  
Author(s):  
K. Aamodt ◽  
N. Abel ◽  
U. Abeysekara ◽  
A. Abrahantes Quintana ◽  
A. Abramyan ◽  
...  

2019 ◽  
Vol 34 (19) ◽  
pp. 1950148 ◽  
Author(s):  
M. Ajaz ◽  
Maryam

The transverse momentum spectra of [Formula: see text] mesons, protons and antiprotons produced in proton–proton collisions at 200 GeV with hadron production models are reported. Two tunes of EPOS (EPOS1.99 and EPOS-LHC), three tunes of QGSJET (QGSJETI, QGSJETII-03, QGSJETII-04), DPMJET and HIJING models are used to obtain the spectra. The results are compared with the measurements of STAR collaboration obtained at mid-rapidity of [Formula: see text] in [Formula: see text] range of [Formula: see text]. All models reproduce the ratios [Formula: see text] and [Formula: see text] at low [Formula: see text] but could not predict well at high [Formula: see text]. In addition, EPOS tunes and QGSJET tunes predict well the spectra of [Formula: see text] meson and the ratios [Formula: see text] and [Formula: see text] at low [Formula: see text]. The HIJING and the QGSJET (tune I only) could reproduce all the spectra and all the ratios at a satisfactory level of precision and were found good among the models considered in the current study at RHIC energy.


Physics ◽  
2020 ◽  
Vol 2 (2) ◽  
pp. 277-308
Author(s):  
Li-Li Li ◽  
Fu-Hu Liu

Transverse momentum spectra of negative and positive pions produced at mid-(pseudo)rapidity in inelastic or non-single-diffractive proton-proton collisions over a center-of-mass energy, s , range from a few GeV to above 10 TeV are analyzed by the blast-wave fit with Boltzmann (Tsallis) distribution. The blast-wave fit results are well fitting to the experimental data measured by several collaborations. In a particular superposition with Hagedorn function, both the excitation functions of kinetic freeze-out temperature ( T 0 ) of emission source and transverse flow velocity ( β T ) of produced particles obtained from a given selection in the blast-wave fit with Boltzmann distribution have a hill at s ≈ 10 GeV, a drop at dozens of GeV, and then an increase from dozens of GeV to above 10 TeV. However, both the excitation functions of T 0 and β T obtained in the blast-wave fit with Tsallis distribution do not show such a complex structure, but a very low hill. In another selection for the parameters or in the superposition with the usual step function, T 0 and β T increase generally quickly from a few GeV to about 10 GeV and then slightly at above 10 GeV, there is no such the complex structure, when also studying nucleus-nucleus collisions.


1975 ◽  
Vol 86 (3) ◽  
pp. 403-440 ◽  
Author(s):  
U. Amaldi ◽  
R. Biancastelli ◽  
C. Bosio ◽  
G. Matthiae ◽  
J.V. Allaby ◽  
...  

2011 ◽  
Vol 26 (03n04) ◽  
pp. 654-655
Author(s):  
◽  
BENEDYKT R. JANY

For the first time pp → pp3π0 has been measured at an incident proton momentum of Pb = 3.35 GeV / c . The total cross section has been determined. The reaction mechanism is studied by a Dalitz plot analyses, which indicate that the leading production and decay mechanism is closely related to the simultaneous excitation of Δ(1232) and N*(1440) baryon resonances.


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