Meson Production inp+dCollisions and theI=0π−πInteraction. I. Measured Momentum Spectra ofHe3andH3Nuclei from High-Energyp+dCollisions

1963 ◽  
Vol 132 (5) ◽  
pp. 2296-2304 ◽  
Author(s):  
Alexander Abashian ◽  
Norman E. Booth ◽  
Kenneth M. Crowe ◽  
Roger E. Hill ◽  
Ernest H. Rogers
Keyword(s):  
Meson Production ◽  
Momentum Spectra ◽  
Measured Momentum

scholarly journals THE CENTRALITY DEPENDENCE OF STRANGE BARYON AND MESON PRODUCTION IN CU+CU AND AU+AU FOR $\sqrt{^SNN} = 200 {\rm GEV}$ COLLISIONS

2007 ◽  
Vol 16 (07n08) ◽  
pp. 2055-2060 ◽  
Author(s):  
◽  
ANTHONY R. TIMMINS
Keyword(s):  
Transverse Momentum ◽  
Meson Production ◽  
Strangeness Production ◽  
Centrality Dependence ◽  
Strange Baryon ◽  
Momentum Spectra ◽  
Transverse Momentum Spectra

Transverse momentum spectra of Λ and [Formula: see text] particles are presented for Cu + Cu at [Formula: see text] collisions observed at STAR, and compared to Au + Au measurements at the same energy. For both systems, a number of observables are shown to increase at mid-rapidity (|y| < 0.5) with increasing centrality. These are the integrated Λ and [Formula: see text] yields, the integrated ? and [Formula: see text] yields per participating nucleon, and mid-pT(1 GeV /c → 4.5 GeV /c)[Formula: see text] ratios. The RCP ratio is found to be higher for the Λ yields at mid-pT compared to the [Formula: see text] yields for both the Cu + Cu and Au + Au data. In contrast, when similar numbers of participating nucleons are considered for the Cu + Cu and Au + Au data, an indication of increased bulk strangeness production and a higher mid-pT(1 GeV /c → 4.5 GeV /c)[Formula: see text] ratio are found, for Cu + Cu .

scholarly journals Meson Production in High Energy p+p Collisions at the RHIC Energies

2013 ◽  
Vol 2013 ◽  
pp. 1-7 ◽  
Author(s):  
Bao-Chun Li ◽  
Ya-Zhou Wang ◽  
Er-Qin Wang
Keyword(s):  
Transverse Momentum ◽  
Meson Production ◽  
High Energy ◽  
Maximum Energy ◽  
High Transverse Momentum ◽  
Component Distribution ◽  
Tail Part ◽  
Cylinder Model ◽  
Momentum Spectra ◽  
Transverse Momentum Spectra

Transverse momentum spectra of mesons produced in p+p collisions are studied in the framework of a thermalized cylinder model. In the region of high transverse momentum, the considered distributions have a tail part at the maximum energy of RHIC. A two-component distribution based upon the improved cylinder model is used to fit the experimental data of the PHENIX Collaboration. It is found that the improved approach can describe the meson production in the wider range of transverse momenta.

scholarly journals ϕ meson production at forward rapidity in pp and Pb–Pb collisions with ALICE at the LHC

2018 ◽  
Vol 171 ◽  
pp. 13006
Author(s):  
Alessandro De Falco
Keyword(s):  
Transverse Momentum ◽  
Center Of Mass ◽  
Meson Production ◽  
Forward Rapidity ◽  
Momentum Range ◽  
Alice Collaboration ◽  
Dimuon Channel ◽  
Momentum Spectra ◽  
Transverse Momentum Spectra ◽  
8 Tev

The ALICE Collaboration has measured ϕ meson production in the dimuon channel at the forward rapidity (2.5 < y < 4) in pp and Pb–Pb collisions at several center of mass energies. Results in pp collisions at center of mass energies √s = 5.02 and 8 TeV are reported. They complement the previously published results at √s = 2.76 and √s = 7 TeV, providing a solid baseline for Pb–Pb collisions. In Pb–Pb, the preliminary ϕ meson transverse momentum spectra for different centrality classes and the yields as a function of the collision centrality in the transverse momentum range 2 < pT < 7 GeV/c are presented.

Vector Meson Production in Semi‐Inclusive π ‐ p Interactions

1974 ◽  
Author(s):  
A. Levy ◽  
D. Brick ◽  
M. Hodous ◽  
R. Hulsizer ◽  
V. Kistiakowsky ◽  
...  
Keyword(s):  
Vector Meson ◽  
Meson Production ◽  
Vector Meson Production

scholarly journals International Workshop: Meson Production at Intermediate and High Energies

2012 ◽  
Vol 349 ◽  
pp. 011001
Author(s):  
Giorgio Giardina ◽  
Fabio Bossi ◽  
Paolo Levi Sandri ◽  
Paolo Pedroni ◽  
Hartmut Schmieden
Keyword(s):  
International Workshop ◽  
Meson Production ◽  
High Energies

scholarly journals Multiplicity dependence of χc and χb meson production

2021 ◽  
Vol 104 (1) ◽  
Author(s):  
Marat Siddikov ◽  
Iván Schmidt
Keyword(s):  
Meson Production

scholarly journals Study of Dependence of Kinetic Freezeout Temperature on the Production Cross-Section of Particles in Various Centrality Intervals in Au–Au and Pb–Pb Collisions at High Energies

Entropy ◽  
2021 ◽  
Vol 23 (4) ◽  
pp. 488
Author(s):  
Muhammad Waqas ◽  
Guang-Xiong Peng
Keyword(s):  
Transverse Momentum ◽  
Flow Velocity ◽  
Production Cross ◽  
Center Of Mass ◽  
Wave Model ◽  
Transverse Flow ◽  
Peripheral Collisions ◽  
Momentum Spectra ◽  
Transverse Momentum Spectra ◽  
Transverse Flow Velocity

Transverse momentum spectra of π+, p, Λ, Ξ or Ξ¯+, Ω or Ω¯+ and deuteron (d) in different centrality intervals in nucleus–nucleus collisions at the center of mass energy are analyzed by the blast wave model with Boltzmann Gibbs statistics. We extracted the kinetic freezeout temperature, transverse flow velocity and kinetic freezeout volume from the transverse momentum spectra of the particles. It is observed that the non-strange and strange (multi-strange) particles freezeout separately due to different reaction cross-sections. While the freezeout volume and transverse flow velocity are mass dependent, they decrease with the resting mass of the particles. The present work reveals the scenario of a double kinetic freezeout in nucleus–nucleus collisions. Furthermore, the kinetic freezeout temperature and freezeout volume are larger in central collisions than peripheral collisions. However, the transverse flow velocity remains almost unchanged from central to peripheral collisions.

scholarly journals Two and three pseudoscalar production in e+e− annihilation and their contributions to (g − 2)μ

2021 ◽  
Vol 2021 (3) ◽  
Author(s):  
Wen Qin ◽  
Ling-Yun Dai ◽  
Jorge Portolés
Keyword(s):  
Experimental Data ◽  
Theoretical Prediction ◽  
Pseudoscalar Meson ◽  
Magnetic Moment ◽  
Anomalous Magnetic Moment ◽  
Vacuum Polarization ◽  
Meson Production ◽  
The Other ◽  
Joint Analysis ◽  
The Standard Model

Abstract A coherent study of e+e− annihilation into two (π+π−, K+K−) and three (π+π−π0, π+π−η) pseudoscalar meson production is carried out within the framework of resonance chiral theory in energy region E ≲ 2 GeV. The work of [L.Y. Dai, J. Portolés, and O. Shekhovtsova, Phys. Rev. D88 (2013) 056001] is revisited with the latest experimental data and a joint analysis of two pseudoscalar meson production. Hence, we evaluate the lowest order hadronic vacuum polarization contributions of those two and three pseudoscalar processes to the anomalous magnetic moment of the muon. We also estimate some higher-order additions led by the same hadronic vacuum polarization. Combined with the other contributions from the standard model, the theoretical prediction differs still by (21.6 ± 7.4) × 10−10 (2.9σ) from the experimental value.

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.

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