scholarly journals Two-Photon Interactions in Meson Production at Energies at the CERN Large Hadron Collider (LHC)

2017 ◽  
Vol 45 ◽  
pp. 1760069
Author(s):  
Eduardo S. da Veiga ◽  
Daniel T. da Silva ◽  
Werner K. Sauter ◽  
Victor P. Gonçalves
Keyword(s):  
Particle Production ◽  
Hadron Collider ◽  
Meson Production ◽  
High Energy ◽  
Particle Accelerators ◽  
Proton Proton ◽  
Exotic Particles ◽  
Two Photon ◽  
Photon Interactions ◽  
New Particles

With the development of experiments in particle accelerators, there have been many new particles discovered. Some of these new particles are called exotic particles and are predicted by Quantum Chromodynamics (QCD). There are various models for the study of these particles, and a possible way to study the exotic particle production is through the study of meson production in two-photon interactions at high-energy collisions due his clean experimental signal. In this contribution, we calculate the meson production in two-photon interactions at LHC energies considering proton-proton collisions to estimate the total cross section for the production of exotic states.

Meson production in two-photon interaction in pp and pA ultraperipheral collisions at the LHC and FCC

2018 ◽  
Vol 27 (09) ◽  
pp. 1850075
Author(s):  
Ya-Ping Xie ◽  
Xurong Chen
Keyword(s):  
Large Hadron Collider ◽  
Cross Sections ◽  
Hadron Collider ◽  
Meson Production ◽  
Photon Flux ◽  
Proton Proton ◽  
Photon Interaction ◽  
Cern Large Hadron Collider ◽  
Two Photon ◽  
Equivalent Photon

Meson cross-sections are evaluated in two-photon interaction in hadron–hadron ultraperipheral collisions at the CERN Large Hadron Collider (LHC) and Future Circular Collider (FCC). Two models of the equivalent photon flux are employed in the calculations. Cross-sections of meson production in proton–proton and proton-lead ultraperipheral collisions are presented in this paper. These meson cross-sections in two-photon interaction can be applied to predict cross-sections in the experiments at the LHC and FCC.

scholarly journals Comparing Two Different Initial Conditions AAMQS and Quartic Action in Illustrating the Effect of Valence Color Charges in High-EnergypACollisions at Forward Rapidity

2013 ◽  
Vol 2013 ◽  
pp. 1-14
Author(s):  
Ye-Yin Zhao ◽  
Ya-Hui Chen ◽  
Ya-Qin Gao ◽  
Fu-Hu Liu
Keyword(s):  
Particle Production ◽  
Initial Conditions ◽  
Hadron Collider ◽  
Heavy Ion ◽  
High Energy ◽  
Color Glass ◽  
Forward Rapidity ◽  
Relativistic Heavy Ion Collider ◽  
Proton Proton ◽  
Running Coupling

The inclusive particle productions in proton-proton (pp) and deuton-gold (d+Au) collisions at forward rapidity at the Relativistic Heavy Ion Collider (RHIC) energy are studied in the framework of the color glass condensate (CGC) theory by using two different initial conditions: AAMQS (Albacete-Armesto-Milhano-Quiroga-Salgado) and quartic action. Then, the results obtained by the two different initial conditions in illustrating the effect of valence color charges in high-energy proton-nucleus (pA) collisions at forward energy are compared. Meanwhile, the inclusive particle productions inpAcollisions at forward rapidity at the Large Hadron Collider (LHC) energies are predicted. The main dynamical input in our calculations is the use of solutions of the running coupling Balitsky-Kovchegov equation tested in electron-proton (ep) collision data. Particle production is computed via the hybrid formalisms to obtain spectra and yields. These baseline predictions are useful for testing the current understanding of the dynamics of very strong color fields against the upcoming LHC data.

scholarly journals RENORMALIZATION GROUP EVOLUTION OF MULTI-GLUON CORRELATORS IN HIGH ENERGY QCD

2012 ◽  
Vol 20 ◽  
pp. 214-221
Author(s):  
JAMAL JALILIAN-MARIAN
Keyword(s):  
Particle Production ◽  
High Energy ◽  
Forward Rapidity ◽  
Proton Proton ◽  
Proton Collisions ◽  
Angular Correlations ◽  
Energy Proton ◽  
Group Evolution ◽  
Proton Proton Collisions ◽  
Made In

Forward rapidity di-hadron azimuthal angular correlations in high energy proton-nucleus and proton-proton collisions are sensitive to quadrupoles; traceless correlator of 4 Wilson lines whereas single inclusive particle production iNVOLVES only dipoles, traceless correlator of 2 Wilson lines. We discuss the progress made in understanding the energy (rapidity) evolution of the quadrupole as well as its various limits.

scholarly journals Study of charged-particle multiplicity fluctuations in pp collisions with Monte Carlo event generators at the LHC

2020 ◽  
Vol 29 (09) ◽  
pp. 2050074
Author(s):  
E. Shokr ◽  
A. H. El-Farrash ◽  
A. De Roeck ◽  
M. A. Mahmoud
Keyword(s):  
Charged Particle ◽  
Particle Production ◽  
Local Density ◽  
Particle Density ◽  
Hadron Collider ◽  
Center Of Mass ◽  
Monte Carlo Event ◽  
Particle Multiplicity ◽  
Charged Particle Multiplicity ◽  
Proton Proton

Proton–Proton ([Formula: see text]) collisions at the Large Hadron Collider (LHC) are simulated in order to study events with a high local density of charged particles produced in narrow pseudorapidty windows of [Formula: see text] = 0.1, 0.2, and 0.5. The [Formula: see text] collisions are generated at center of mass energies of [Formula: see text], [Formula: see text], [Formula: see text], and [Formula: see text] TeV, i.e., the energies at which the LHC has operated so far, using PYTHIA and HERWIG event generators. We have also studied the average of the maximum charged-particle density versus the event multiplicity for all events, using the different pseudorapidity windows. This study prepares for the multi-particle production background expected in a future search for anomalous high-density multiplicity fluctuations using the LHC data.

Modeling charged-particle multiplicity distributions at LHC

2020 ◽  
Vol 35 (36) ◽  
pp. 2050302
Author(s):  
Amr Radi
Keyword(s):  
High Energy Physics ◽  
Hadron Collider ◽  
Center Of Mass ◽  
Charged Particles ◽  
High Energy ◽  
Particle Multiplicity ◽  
Charged Particle Multiplicity ◽  
Proton Proton ◽  
Center Of Mass Energy ◽  
8 Tev

With many applications in high-energy physics, Deep Learning or Deep Neural Network (DNN) has become noticeable and practical in recent years. In this article, a new technique is presented for modeling the charged particles multiplicity distribution [Formula: see text] of Proton-Proton [Formula: see text] collisions using an efficient DNN model. The charged particles multiplicity n, the total center of mass energy [Formula: see text], and the pseudorapidity [Formula: see text] used as input in DNN model and the desired output is [Formula: see text]. DNN was trained to build a function, which studies the relationship between [Formula: see text]. The DNN model showed a high degree of consistency in matching the data distributions. The DNN model is used to predict with [Formula: see text] not included in the training set. The expected [Formula: see text] had effectively merged the experimental data and the values expected indicate a strong agreement with Large Hadron Collider (LHC) for ATLAS measurement at [Formula: see text], 7 and 8 TeV.

scholarly journals Magnetic Field in Nuclear Collisions at Ultra High Energies

Physics ◽  
2019 ◽  
Vol 1 (2) ◽  
pp. 183-193
Author(s):  
Vitalii A. Okorokov
Keyword(s):  
Magnetic Field ◽  
Hard Sphere ◽  
W Boson ◽  
Hadron Collider ◽  
High Energy ◽  
Hard Sphere Model ◽  
Heavy Nuclei ◽  
Proton Proton ◽  
High Energies ◽  
The Magnetic Field

The magnetic field created in proton–proton and nucleus–nucleus collisions at ultra-high energies are studied with models of point-like charges and hard sphere for distribution of the constituents for vacuum conditions. The various beam ions are considered from light to heavy nuclei at energies corresponding to the nominal energies of the proton beam within the projects of further accelerator facilities high-energy Large Hadron Collider (HE-LHC) and Future Circular Collider (FCC). The magnetic-field strength immediately after collisions reaches the value tens of GeV 2 , while in the approach with point-like charges, some overestimate the amplitude of the field in comparison with more realistic hard-sphere model. The absolute value of the magnetic field rapidly decreases with time and increases with growth of atomic number. The amplitude for e B is estimated at level 100 GeV 2 to provide magnitude for quark–quark collisions at energies corresponding to the nominal energies of proton beams. These estimations are close to the range for onset of W boson condensation.

scholarly journals HIGHLIGHTS FROM THE LHC

2013 ◽  
Vol 53 (A) ◽  
pp. 518-523
Author(s):  
Arno Straessner
Keyword(s):  
Large Hadron Collider ◽  
Standard Model ◽  
Hadron Collider ◽  
Centre Of Mass ◽  
Proton Proton ◽  
Exotic Particles ◽  
Proton Collisions ◽  
Total Luminosity ◽  
Future Data ◽  
Proton Proton Collisions

The Large Hadron Collider (LHC) and the two multi-purpose detectors, ATLAS and CMS, have been operated successfully at record centre-of-mass energies of 7 ÷ 8TeV. This paper presents the main physics results from proton–proton collisions based on a total luminosity of 2 × 5 fb<sup>−1</sup>. The most recent results from Standard Model measurements, Standard Model and MSSM Higgs searches, as well as searches for supersymmetric and exotic particles are reported. Prospects for ongoing and future data taking are presented.

Sign in / Sign up

Export Citation Format

Share Document