Conveners
QCD: QCD
- Gang Chen (Physcal Department, China University of Geosciences)
Daekyoung Kang
(Fudan University)
21/12/2018, 14:00
QCD
We study the transverse energy spectrum for the Drell-Yan process. The transverse energy is measured within the central region defined by a (pseudo-) rapidity cutoff. Soft-collinear effective theory (SCET) is used to factorize the cross section and resum large logarithms of the rapidity cutoff and ratios of widely separated scales that appear in the fixed order result. We develop a framework...
Er-Liang Cui
(Beihang University)
21/12/2018, 14:15
QCD
In 2002 the SELEX experiment collaboration reported the evidence of the doubly charmed baryon $\Xi_{cc}^+(3519)$ in the process of $\Xi_{cc}^+ \to \Lambda_c^+ K^- \pi^+$. Recently, the LHCb collaboration discovered a new state $\Xi^{++}_{cc}(3621)$, which is considered to be a new doubly charmed baryon, in the $\Lambda^+_c K^- \pi^+ \pi^+$ mass spectrum. Many theoretical methods and models,...
飞 李
(China University of Geosicence (WuHan))
21/12/2018, 14:30
QCD
We consider $R^4$ corrections to the holographic Schwinger effect in
an AdS black hole background and a confining D3-brane background.
The potential between a test particle pair are performed for both backgrounds.
We find there is no potential barrier in the critical electric field,
which means that the system becomes catastrophically unstable.
It is shown that for both backgrounds,...
Pengyao Cui
(Central China Normal University)
21/12/2018, 14:45
QCD
The $p_{\rm T}$ dependence of the baryon-to-meson yield ratio in hadronic and nuclear collisions is sensitive to the collective expansion of the system, the partonic recombination into hadrons, the jet fragmentation and hadronization.
In the region $2 < p_{\rm T} < 6 $ GeV/$c$, this ratio for inclusive yields is significantly enhanced at high multiplicity in small collision systems, such as...
Ms
lili li
(Shanxi University)
21/12/2018, 15:00
QCD
Transverse momentum spectra of negative and
positive pions produced at mid-(pseudo)rapidity in inelastic or
non-single-diffractive proton-proton ($pp$) collisions over a
center-of-mass energy, $\sqrt{s}$, range from a few GeV to above
10 TeV are analyzed by the blast-wave model with Boltzmann-Gibbs
(Tsallis) statistics. The model results are well fitting to the
experimental data measured...
Zhen LIU
(University of Science and Technology of China)
21/12/2018, 15:15
QCD
Charmonia are bound states of charm and anti-charm quarks which provide a unique opportunity to explore properties of the quantum chromodynamics.
The production mechanism of charmonia in elementary collisions is not fully understood yet.
Several models have been proposed to describe the production of $J/\psi$ mesons, each one employing a different treatment of the hadronization process....
Ms
Yanchun Ding
(CCNU)
21/12/2018, 15:30
QCD
In pp collisions at LHC energies, the production of heavy quarks proceeds dominantly from the hard scattering of two gluons. These quarks then hadronise in either open heavy-flavor hadrons or quarkonia (e.g. J/𝜓, Υ). The study of quarkonium production as a function of the charged-particle multiplicity, therefore, naturally links soft and hard processes that occur in the collision and allows...
Dr
Jun Song
(Jining university)
21/12/2018, 15:45
Heavy Ions
We find an important new feature of soft hadron production in pp and pPb collisions at LHC energies, that is, the possible transition of hadronization mechanism from the traditional fragmentation to the quark combination. We observe that the ALICE data for the low p_T (<=6GeV/c) spectra of Omega(sss) and phi(s\bar{s}) in pPb collisions at 5.02 TeV exhibit a constituent quark number scaling...
