Results 41 to 50 of about 466,224 (256)

Are there compact heavy four-quark bound states? [PDF]

open access: yes, 2007
We present an exact method to study four-quark systems based on the hyperspherical harmonics formalism. We apply it to several physical systems of interest containing two heavy and two light quarks using different quark-quark potentials.
A. Valcarce   +5 more
core   +2 more sources

Search for medium response to jet quenching via hadron chemistry around the quenched jets [PDF]

open access: yesEPJ Web of Conferences
We present a unique signal of medium response to jet quenching: the enhancement of baryon-to-meson ratios for associated particles at intermediate transverse momentum around the triggered quenched jets.
Luo Ao   +4 more
doaj   +1 more source

A path integral for heavy-quarks in a hot plasma [PDF]

open access: yes, 2010
We propose a model for the propagation of a heavy-quark in a hot plasma, to be viewed as a first step towards a full description of the dynamics of heavy quark systems in a quark-gluon plasma, including bound state formation.
A. Beraudo   +35 more
core   +2 more sources

A Novel Multi-Gene Detection Platform for the Analysis of miRNA Expression

open access: yesScientific Reports, 2018
The study of miRNAs and their roles as non-invasive biomarkers has been intensely conducted in cancer diseases over the past decade. Various platforms, ranging from conventional qPCRs to Next Generation Sequencers (NGS), have been widely used to analyze ...
Chia-Hsun Hsieh   +6 more
doaj   +1 more source

Combined explanations of B-physics anomalies, $$(g-2)_{e, \mu }$$ ( g - 2 ) e , μ and neutrino masses by scalar leptoquarks

open access: yesEuropean Physical Journal C: Particles and Fields, 2022
We extend the contents of the standard model (SM) by introducing TeV-scale scalar leptoquarks to generate neutrino masses and explain some current observed deviations from the SM predictions, including the anomalous magnetic moments of charged leptons ...
Shao-Long Chen   +2 more
doaj   +1 more source

Multiple Parton Scattering in Nuclei: Heavy Quark Energy Loss and Modified Fragmentation Functions [PDF]

open access: yes, 2004
Multiple scattering, induced radiative energy loss and modified fragmentation functions of a heavy quark in nuclear matter are studied within the framework of generalized factorization in perturbative QCD. Modified heavy quark fragmentation functions and
Adams   +61 more
core   +2 more sources

Systematics of quark/gluon tagging [PDF]

open access: yes, 2017
A bstractBy measuring the substructure of a jet, one can assign it a “quark” or “gluon” tag. In the eikonal (double-logarithmic) limit, quark/gluon discrimination is determined solely by the color factor of the initiating parton (CF versus CA).
P. Gras   +9 more
semanticscholar   +1 more source

High-Precision Differential Predictions for Top-Quark Pairs at the LHC. [PDF]

open access: yesPhysical Review Letters, 2015
We present the first complete next-to-next-to-leading order (NNLO) QCD predictions for differential distributions in the top-quark pair production process at the LHC. Our results are derived from a fully differential partonic Monte Carlo calculation with
M. Czakon, D. Heymes, A. Mitov
semanticscholar   +1 more source

Positive magnetoresistance induced by hydrodynamic fluctuations in chiral media

open access: yesJournal of High Energy Physics, 2021
We analyze the combined effects of hydrodynamic fluctuations and chiral magnetic effect (CME) for a chiral medium in the presence of a background magnetic field. Based on the recently developed non-equilibrium effective field theory, we show fluctuations
Noriyuki Sogabe, Naoki Yamamoto, Yi Yin
doaj   +1 more source

The Quark Spin Distributions of the Nucleon

open access: yes, 1998
The quark helicity measured in polarized deep inelastic scattering is different from the quark spin in the rest frame of the nucleon. We point out that the quark spin distributions $\Delta q_{RF}(x)$ are connected with the quark helicity distributions ...
Aoki   +11 more
core   +2 more sources

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