scholarly journals Parametrizations of inclusive cross sections for pion production in proton-proton collisions

2000 ◽  
Vol 62 (9) ◽  
Author(s):  
Steve R. Blattnig ◽  
Sudha R. Swaminathan ◽  
Adam T. Kruger ◽  
Moussa Ngom ◽  
John W. Norbury
Keyword(s):  
Cross Sections ◽  
Pion Production ◽  
Proton Proton ◽  
Proton Collisions ◽  
Proton Proton Collisions

scholarly journals Two-pion production in proton–proton collisions — experimental total cross sections and their isospin decomposition

2009 ◽  
Vol 679 (1) ◽  
pp. 30-35 ◽  
Author(s):  
T. Skorodko ◽  
M. Bashkanov ◽  
D. Bogoslawsky ◽  
H. Calén ◽  
H. Clement ◽  
...  
Keyword(s):  
Cross Sections ◽  
Pion Production ◽  
Proton Proton ◽  
Total Cross Sections ◽  
Proton Collisions ◽  
Proton Proton Collisions

scholarly journals MESON PRODUCTION IN PROTON–PROTON COLLISIONS IN THE NAIVE NONABELIANIZATION APPROXIMATION AND THE ROLE OF INFRARED RENORMALONS

2012 ◽  
Vol 21 (02) ◽  
pp. 1250014 ◽  
Author(s):  
A. I. AHMADOV ◽  
SH. M. NAGIYEV ◽  
E. A. DADASHOV
Keyword(s):  
Cross Section ◽  
Cross Sections ◽  
Pion Production ◽  
Production Cross ◽  
Meson Production ◽  
Proton Proton ◽  
Proton Collisions ◽  
Running Coupling ◽  
Coupling Approach ◽  
Proton Proton Collisions

We calculate the "naive nonabelianization" (NNA) contributions of the higher-twist Feynman diagrams to the large-pT inclusive pion production cross-section in proton–proton collisions in the case of the running coupling and frozen coupling approaches. We compare the resummed "naive nonabelianization" higher-twist cross-sections with the ones obtained in the framework of the frozen coupling approach and leading-twist cross-section. The structure of infrared renormalon singularities of the higher-twist subprocess cross-section and it's resummed expression are found. We discuss the phenomenological consequences of possible higher-twist contributions to the pion production in proton–proton collisions in within NNA.

A bubble-chamber study of proton-proton collisions at 4 GeV/c. II.—Multiple pion production

1968 ◽  
Vol 58 (2) ◽  
pp. 475-499 ◽  
Author(s):  
L. Bodini ◽  
L. Casè ◽  
J. Kidd ◽  
L. Mandelli ◽  
V. Pelosi ◽  
...  
Keyword(s):  
Pion Production ◽  
Bubble Chamber ◽  
Proton Proton ◽  
Proton Collisions ◽  
Chamber Study ◽  
Proton Proton Collisions

ππ PRODUCTION IN PROTON-PROTON COLLISIONS

2007 ◽  
Vol 22 (02n03) ◽  
pp. 509-513 ◽  
Author(s):  
◽  
T. Skorodko ◽  
M. Bashkanov ◽  
D. Bogoslowsky ◽  
H. Calén ◽  
...  
Keyword(s):  
Pion Production ◽  
Invariant Mass Spectrum ◽  
Light Nuclei ◽  
Special Configuration ◽  
Proton Proton ◽  
Proton Collisions ◽  
Low Mass ◽  
Threshold Energies ◽  
Proton Proton Collisions ◽  
Mass Enhancement

At CELSIUS-WASA the two-pion production in proton-proton collisisons has been measured exclusively from threshold up to the energy regime, where both of the collision partners are expected to be excited to the Δ state. The measurements constitute the first kinematically complete data samples of solid statistics in this energy range. Most of the data have been obtained for the π+π- and π0π0channels. Whereas at near-threshold energies the differential distributions can be succesfully explained by chiral dynamics and Roper excitation, respectively, the data for the π+π- channel in the ΔΔ region can be described only, if the special configuration (ΔΔ)0+ is assumed. The data for the π0π0 channel moreover exhibit a low-mass enhancement in the π0π0 invariant mass spectrum, which is reminiscent of the ABC-effect found in double-pionic fusion to light nuclei.

scholarly journals Measurement of prompt ψ(2S) production cross sections in proton–lead and proton–proton collisions at sNN=5.02TeV

2019 ◽  
Vol 790 ◽  
pp. 509-532 ◽  
Author(s):  
A.M. Sirunyan ◽  
A. Tumasyan ◽  
W. Adam ◽  
F. Ambrogi ◽  
E. Asilar ◽  
...  
Keyword(s):  
Cross Sections ◽  
Production Cross ◽  
Proton Proton ◽  
Proton Collisions ◽  
Proton Proton Collisions

scholarly journals Dielectron Production in Proton–Proton Collisions at √s=7 TeV with ALICE

Proceedings ◽  
2019 ◽  
Vol 10 (1) ◽  
pp. 24
Author(s):  
Sebastian Scheid
Keyword(s):  
Cross Sections ◽  
Mass Range ◽  
Heavy Ion ◽  
Event Generator ◽  
Leading Order ◽  
Proton Proton ◽  
Total Cross Sections ◽  
Proton Collisions ◽  
Ion Collisions ◽  
Proton Proton Collisions

The ALICE Collaboration measured dielectron production as a function of the invariant mass ( m ee ), the pair transverse momentum ( p T , ee ) and the pair distance of closest approach ( DCA ee ) in pp collisions at s = 7 TeV. Prompt and non-prompt dielectron sources can be separated with the DCA ee , which will give the opportunity in heavy-ion collisions to identify thermal radiation from the medium in the intermediate-mass range dominated by contributions from open-charm and beauty hadron decays. The charm and beauty total cross sections are extracted from the data by fitting the spectra with two different MC generators, i.e., PYTHIA a leading order event generator and POWHEG a next-to-leading order event generator. Significant model dependences are observed, reflecting the sensitivity of this measurement to the heavy-flavour production mechanisms.

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