scholarly journals Flux tube zero-point motion, hadronic charge radii, and hybrid meson production cross sections

1999 ◽  
Vol 60 (11) ◽  
Author(s):  
Nathan Isgur
Keyword(s):  
Flux Tube ◽  
Cross Sections ◽  
Production Cross ◽  
Meson Production ◽  
Zero Point ◽  
Hybrid Meson ◽  
Charge Radii ◽  
Point Motion

scholarly journals THE MESON PRODUCTION IN PROTON–PROTON COLLISIONS IN NEXT-TO-LEADING ORDER AND INFRARED RENORMALONS

2011 ◽  
Vol 20 (05) ◽  
pp. 1243-1270 ◽  
Author(s):  
A. I. AHMADOV ◽  
R. M. BURJALIYEV
Keyword(s):  
Cross Section ◽  
Cross Sections ◽  
Production Cross ◽  
Meson Production ◽  
Leading Order ◽  
Proton Proton ◽  
Proton Collisions ◽  
Running Coupling ◽  
Coupling Approach ◽  
Proton Proton Collisions

In this paper, we investigate the next-to-leading order contribution of the higher-twist Feynman diagrams to the large-pT inclusive pion production cross-section in proton–proton collisions and present the general formulae for the higher-twist differential cross-sections in the case of the running coupling and frozen coupling approaches. We compared the resummed next-to-leading order 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 its resummed expression (the Borel sum) are found. It is shown that the resummed result depends on the choice of the meson wave functions used in the calculations. We discuss the phenomenological consequences of possible higher-twist contributions to the meson production in proton–proton collisions in next-to-leading order at RHIC.

scholarly journals Self-similarity approach for prediction and analysis of experiments at the accelerator complex NICA

2019 ◽  
Vol 204 ◽  
pp. 07003
Author(s):  
Elina G. Baldina ◽  
Anton A. Baldin
Keyword(s):  
Cross Sections ◽  
Quantitative Estimation ◽  
Production Cross ◽  
Meson Production ◽  
Accelerator Complex ◽  
Heavy Nuclei ◽  
Self Similarity ◽  
Nuclear Collisions ◽  
Relativistic Nuclear Collisions ◽  
The Given

The given functional self-similarity solution quantitatively describes angular, energy and A-dependences of inclusive production cross sections for hadrons in relativistic nuclear collisions. It is applied to quantitative estimation of D, as well as φ and J/ψ meson production in collider experiment at the NICA accelerator complex with heavy nuclei. The results can be used for optimization of kinematically registered parameters for investigation of collective phenomena.

SIGMA MESON PRODUCTION IN HEAVY ION COLLISIONS AT INTERMEDIATE ENERGIES

2007 ◽  
Vol 22 (32) ◽  
pp. 6219-6226
Author(s):  
PORNRAD SRISAWAD ◽  
YU-MING ZHENG ◽  
CHRISTIAN FUCHS ◽  
AMAND FAESSLER ◽  
YUPENG YAN ◽  
...  
Keyword(s):  
Cross Sections ◽  
Production Cross ◽  
Meson Production ◽  
Heavy Ion ◽  
Mass Shift ◽  
Quantum Molecular Dynamics ◽  
Final State ◽  
Intermediate Energies ◽  
Simulation Results ◽  
Proton Induced Reactions

The production of the sigma (σ) meson is investigated in the quantum molecular dynamics model for the p+A reactions with the nuclei A being 12 C , 40 Ca and 208 Pb at the incident proton energies Ep = 1.50 GeV . The simulation results indicates a distinctive A dependence of the sigma production, that is, the increase of A is followed by an increase of the production cross-sections. The σ meson production in proton induced reactions is strongly medium-dependent, and the produced σ mesons decaying in a denser medium experience a stronger mass shift towards lower masses. This mass shift is an experimentally accessible observable in the final state pion pairs which did not suffer reabsorption by the surrounding nucleons. It is pointed out that the ratio of the simulation results of measurable σ mesons (in the form of two pions) cross-sections as a function of the sigma invariant-mass from various reactions opens the possibility to address experimentally the mass shift of the σ in a dense nuclear environment.

scholarly journals Measurement of D⁎±, D± and Ds± meson production cross sections in pp collisions at s=7 TeV with the ATLAS detector

2016 ◽  
Vol 907 ◽  
pp. 717-763 ◽  
Author(s):  
G. Aad ◽  
B. Abbott ◽  
J. Abdallah ◽  
O. Abdinov ◽  
R. Aben ◽  
...  
Keyword(s):  
Cross Sections ◽  
Production Cross ◽  
Meson Production ◽  
Atlas Detector ◽  
Pp Collisions ◽  
Ds Meson

Neutral-Meson Production Cross Sections and Mixing Angles in a Quark Model

1966 ◽  
Vol 17 (7) ◽  
pp. 412-416 ◽  
Author(s):  
G. Alexander ◽  
H. J. Lipkin ◽  
F. Scheck
Keyword(s):  
Quark Model ◽  
Cross Sections ◽  
Production Cross ◽  
Meson Production ◽  
Neutral Meson ◽  
Mixing Angles

scholarly journals Study of baryonic resonances and ρ meson production in the reaction pp → ppπ+π- at 3.5 GeV with HADES

2020 ◽  
Vol 241 ◽  
pp. 01003
Author(s):  
Amel Belounnas
Keyword(s):  
Cross Sections ◽  
Production Cross ◽  
Meson Production ◽  
Heavy Ion ◽  
Nucleon Nucleon ◽  
Charged Hadron ◽  
Total Production ◽  
Resonance Model ◽  
Ion Collisions ◽  
Hades Collaboration

The High Acceptance Di-Electron Spectrometer (HADES) installed at GSI in Darmstadt and de signed to investigate dielectron production in heavy-ion collisions in the range of kinetic beam energies 1-3 A GeV is also an excellent detector for charged hadron detection. We discuss the analysis of the pp → ppπ+π- channel at an incident energy of 3.5 GeV, using results from pp→ppπ0, pp→pnπ+ and pp → pKΛ measured at the same energy by HADES. A consistent description of the differential cross sections as a function of the invariant mass and the production angles is achieved by a simple resonance model taking into account the single and the double excitation of baryonic resonances with masses up to 1.9 GeV. The contributions can be quantified and confronted to the inputs of transport models or to the predictions of dedicated models for nucleon-nucleon reactions. In addition, using specific kinematical cuts, the total production cross section and the angular dis tribution of the ρ meson have been also extracted. As both baryon resonances and the ρ meson are important sources of di-electrons, these results will provide valuable constraints for the interpretation of the dielectron spectra measured by the HADES collaboration.

Sign in / Sign up

Export Citation Format

Share Document