PQCD Approach to Parton Propagation in Matter

Ivan Vitev

doi:10.1016/j.nuclphysa.2006.11.011

Probing jet medium interactions via Z(H) + jet momentum imbalances

The European Physical Journal C ◽

10.1140/epjc/s10052-020-08702-4 ◽

2020 ◽

Vol 80 (12) ◽

Author(s):

Lin Chen ◽

Shu-Yi Wei ◽

Han-Zhong Zhang

Keyword(s):

Transport Coefficient ◽

Good Description ◽

Heavy Ion ◽

Gluon Plasma ◽

High Energy ◽

Jet Quenching ◽

Quenching Effect ◽

Nuclear Collisions ◽

Ion Collisions ◽

Pqcd Approach

AbstractDifferent types of high energy hard probes are used to extract the jet transport properties of the Quark-Gluon Plasma created in heavy-ion collisions, of which the heavy boson tagged jets are undoubtedly the most sophisticated due to its clean decay signature and production mechanism. In this study, we used the resummation improved pQCD approach with high order correction in the hard factor to calculate the momentum ratio $$x_J$$ x J distributions of Z and Higgs (H) tagged jets. We found that the formalism can provide a good description of the 5.02 TeV pp data. Using the BDMPS energy loss formalism, along with the OSU 2 + 1D hydro to simulate the effect of the medium, we extracted the value of the jet transport coefficient to be around $${\hat{q}}_0=4\sim 8~\text {GeV}^2/\text {fm}$$ q ^ 0 = 4 ∼ 8 GeV 2 / fm by comparing with the Z + jet PbPb experimental data. The H + jet $$x_J$$ x J distribution were calculated in a similar manner in contrast and found to have a stronger Sudakov effect as compared with the Z + jet distribution. This study uses a clean color-neutral boson as trigger to study the jet quenching effect and serves as a complimentary method in the extraction of the QGP’s transport coefficient in high energy nuclear collisions.

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Studies of B s 0 → η′η′ Decays in pQCD Approach

Communications in Theoretical Physics ◽

10.1088/0253-6102/49/4/36 ◽

2008 ◽

Vol 49 (4) ◽

pp. 981-986 ◽

Cited By ~ 3

Author(s):

Liu Xin ◽

Xiao Zhen-Jun ◽

Wang Hui-Sheng

Keyword(s):

Pqcd Approach

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Study of the Υ(1S) → BcDs∗ decay with pQCD approach

International Journal of Modern Physics A ◽

10.1142/s0217751x16500615 ◽

2016 ◽

Vol 31 (12) ◽

pp. 1650061 ◽

Cited By ~ 3

Author(s):

Junfeng Sun ◽

Yueling Yang ◽

Qingxia Li ◽

Gongru Lu ◽

Jinshu Huang ◽

...

Keyword(s):

Perturbative Qcd ◽

Branching Ratio ◽

Weak Decay ◽

Wave Functions ◽

Pqcd Approach ◽

Parallel Polarization ◽

The Future ◽

Helicity Amplitudes

The [Formula: see text] weak decay is studied with the perturbative QCD approach firstly. It is found that (1) main contributions to branching ratio come from the longitudinal and parallel helicity amplitudes, (2) branching ratio, longitudinal and parallel polarization fractions are sensitive to the wave functions of the [Formula: see text] meson, (3) branching ratio for the [Formula: see text] decay can reach up to [Formula: see text], which might be promisingly measured by the future experiments.

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