scholarly journals Production of the Bc Meson

1997 ◽  
Vol 12 (22) ◽  
pp. 4039-4048
Author(s):  
Yu-Qi Chen
Keyword(s):  
Transverse Momentum ◽  
Perturbative Qcd ◽  
High Energy ◽  
Factorization Formalism ◽  
Bc Meson ◽  
Hadronic Collisions

The production of the Bc and [Formula: see text] mesons was studied in the framework of the factorization formalism and perturbative QCD. Predicted results implied that an observable number of Bc and [Formula: see text] events can be produced at LEP I and at Tevatron. The fragmentation approximation describes the production of the Bc and [Formula: see text] mesons very well in high energy e+ e- collisions. In hadronic collisions, it is valid when and only when the transverse momentum PT of the produced Bc and [Formula: see text] is much larger than the mass of the Bc meson.

scholarly journals High Energy Resummation: BFKL vs Sudakov

2015 ◽  
Vol 37 ◽  
pp. 1560057
Author(s):  
Feng Yuan
Keyword(s):  
Experimental Data ◽  
Transverse Momentum ◽  
High Energy ◽  
Logarithmic Order ◽  
Dijet Production ◽  
Logarithmic Approximation ◽  
Small X ◽  
High Energy Scattering ◽  
Hadronic Collisions ◽  
Theoretical Developments

In this talk, we review recent theoretical developments on QCD resummation in high energy scattering processes in pp and pA collisions. In particular, we will show that the transverse momentum resummation (Sudakov) can be performed consistently in the small-x factorization formalism (BFKL) at the leading double logarithmic approximation. We further discuss the physics beyond the above approximation, and show that the TMD resummation at next-to-leading logarithmic order can describe the dijet production experimental data from D0 collaboration. Finally, we comment on the TMD resummation effects in the so-called Mueller-Navelet jet production in hadronic collisions.

scholarly journals Hadron-jet correlations in high-energy hadronic collisions at the LHC

2018 ◽  
Vol 78 (9) ◽  
Author(s):  
Andrèe D. Bolognino ◽  
Francesco G. Celiberto ◽  
Dmitry Yu. Ivanov ◽  
Mohammed M. A. Mohammed ◽  
Alessandro Papa
Keyword(s):  
High Energy ◽  
Hadronic Collisions

scholarly journals PHENIX heavy flavor highlights

2020 ◽  
pp. 2040006
Author(s):  
Takashi Hachiya
Keyword(s):  
Perturbative Qcd ◽  
Semileptonic Decay ◽  
Large Mass ◽  
High Energy ◽  
Gluon Density ◽  
Experimental Results ◽  
Heavy Flavor ◽  
Phenix Experiment ◽  
Heavy Flavor Production

Heavy flavor production is a sensitive probe of the initial gluon density in the nucleon and is modified by the entire evolution of the hot quark and gluon medium created in high-energy nucleus–nucleus collisions. Besides, it is a process that can be calculated by perturbative QCD because of their large mass. The PHENIX experiment at RHIC studied the heavy flavor productions for a broad momentum and rapidity ranges using single leptons from the semileptonic decay of charm and bottom hadrons, and dileptons from [Formula: see text] decays in [Formula: see text], [Formula: see text]A, and Au [Formula: see text] Au collisions at [Formula: see text][Formula: see text]200[Formula: see text]GeV. In these proceedings, the recent experimental results in [Formula: see text], Au [Formula: see text] Au, and the small collision systems are presented and the heavy flavor productions and their modifications are discussed.

scholarly journals Direct Photon Measurements with the ALICE Experiment at the LHC

Proceedings ◽  
2019 ◽  
Vol 10 (1) ◽  
pp. 1
Author(s):  
Erwann Masson ◽  
on behalf of the ALICE Collaboration
Keyword(s):  
Transverse Momentum ◽  
High Energy ◽  
Direct Photon ◽  
High Transverse Momentum ◽  
Alice Experiment ◽  
Direct Photons ◽  
Proton Proton ◽  
Small Systems ◽  
Energy Hadron

In high-energy hadron collisions, direct photons can be produced in various processes andare of particular interest to study the hot QCD medium since they escape it without being affected.These proceedings present the latest ALICE experiment results concerning direct photon productionin proton-proton (pp), proton-lead (p–Pb) and lead-lead (Pb–Pb) collisions. All measurements agreewith pQCD calculations at high transverse momentum (pT) and show no direct photon excess at lowpT in small systems while a low-pT signal is found in central Pb–Pb collisions.

scholarly journals Flow and correlation phenomena measurements in pp, pPb and PbPb collisions at CMS

2018 ◽  
Vol 172 ◽  
pp. 05005
Author(s):  
Sandra S. Padula
Keyword(s):  
Transverse Momentum ◽  
Collective Behavior ◽  
Quark Gluon Plasma ◽  
Frictional Resistance ◽  
Gluon Plasma ◽  
High Energy ◽  
Collective Flow ◽  
Particle Correlation ◽  
The Past ◽  
High Energy Collisions

The quark-gluon plasma created in high energy collisions of large nuclei exhibits strong anisotropic collective behavior as a nearly perfect fluid, flowing with little frictional resistance or viscosity. It has been investigated extensively over the past years employing two or more particle correlations. An overview of collective flow and particle correlation measurements at CMS as a function of transverse momentum, pseudorapidity, event multiplicity, for both charged hadrons or identified particles will be presented. These results are compared among pp, pPb and PbPb systems and several aspects of their intriguing similarities are discussed.

scholarly journals Transverse Momentum Resummation for Z boson Plus Jet Production at the LHC

2020 ◽  
Vol 235 ◽  
pp. 02003
Author(s):  
Peng Sun ◽  
Bin Yan ◽  
C.-P. Yan ◽  
Feng Yuan
Keyword(s):  
Transverse Momentum ◽  
Z Boson ◽  
Numerical Results ◽  
Transverse Momentum Dependent ◽  
Jet Production ◽  
Associated Production ◽  
Factorization Formalism ◽  
Leading Logarithm

We study the transverse momentum resummation effects for the Z boson plus jet associated production at the LHC within the transverse momentum dependent (TMD) factorization formalism. The large logarithm ln (Q2/q⊥2) with Q ≫ q⊥ has been resumed to Next-to-Leading Logarithm (NLL) accuracy. We compare our numerical results to the CMS data by reweighting method. It shows that our prediction agree with the data very well.

Sign in / Sign up

Export Citation Format

Share Document