scholarly journals Hard gluon damping in hot QCD

2004 ◽  
Vol 70 (3) ◽  
Author(s):  
André Peshier
Keyword(s):  
Hard Gluon

scholarly journals Coherence Effects in Multiple Medium-Induced Radiation

Proceedings ◽  
2019 ◽  
Vol 10 (1) ◽  
pp. 11
Author(s):  
Fabio Dominguez ◽  
Jose Guilherme Milhano ◽  
Carlos A. Salgado ◽  
Konrad Tywoniuk ◽  
Victor Vila
Keyword(s):  
Time Scales ◽  
Survival Probability ◽  
Jet Quenching ◽  
Close Correspondence ◽  
Gluon Emission ◽  
Classical Description ◽  
Theoretical Support ◽  
Coherence Effects ◽  
Hard Gluon

In the first part of this work we study the color coherence phenomenon by considering the well-known quark-antiquark antenna with an in-medium hard gluon emission and an extra very soft emission outside it—double antenna. By discussing the coherence effects in terms of the survival probability, we generalize previous studies of the antenna radiation to the case of more than two emitters. After providing support to the jet quenching picture with effective emitters in the QCD cascade, we present a novel setup of an antenna splitting inside the medium taking into account the finite formation time of the dipole, which turns out to be an important scale. We read into the role of coherence and the relevant time scales which control the scenario, while also providing theoretical support for vacuum-like emissions early in the medium. Finally, by mapping the spectrum of in-medium splittings through the corresponding kinematical Lund diagram, we appreciate regimes of a close correspondence to a semi-classical description.

Hard gluon bremstrahlung off heavy quarks in e+e− annihilation

1980 ◽  
Vol 91 (3-4) ◽  
pp. 487 ◽  
Keyword(s):  
Heavy Quarks ◽  
Hard Gluon

scholarly journals A new proposal for glueball exploration in hard gluon fragmentation

1999 ◽  
Vol 1999 (07) ◽  
pp. 013-013 ◽  
Author(s):  
Probir Roy ◽  
K Sridhar
Keyword(s):  
Hard Gluon ◽  
Gluon Fragmentation

scholarly journals TOTAL WIDTHS OF LIGHT HADRONS: AN INCLUSIVE VIEW

1995 ◽  
Vol 10 (19) ◽  
pp. 2799-2818 ◽  
Author(s):  
A.N. MITRA ◽  
ANJU SHARMA
Keyword(s):  
Chiral Limit ◽  
Mass Function ◽  
Total Width ◽  
Time Zone ◽  
A Value ◽  
Hard Gluon ◽  
Vector Exchange ◽  
Dynamical Breaking ◽  
Short Time ◽  
Crucial Ingredient

The total width of a [Formula: see text] hadron is modeled by the rate at which it dissociates into a pair of quasifree quarks brought about by “soft” and “hard” gluon exchanges, under the ansatz of a short time zone for the existence of such a state. A crucial ingredient in this regard is the quark’s mass function for which a nonperturbative formula is obtained via dynamical breaking of the chiral symmetry of an input vector-exchange-like four-fermion Lagrangian, facilitated by the knowledge that for a chirally invariant Lagrangian this quantity is also equal to the pion-quark vertex function in the chiral limit (Mπ⇒0). The mass function so employed is based on a Bethe-Salpeter (BS) model with a vectorexchange-like kernel (chirally invariant) which is precalibrated to the spectroscopy of [Formula: see text] and qqq hadrons, and also predicts a value of [Formula: see text] fully consistent with QCD sum rules. The predicted widths show a good overlap with available data from L>1 to J=5, while limitations of phase space resist applicability of the said mechanism due to the onset of hadronic selection rules for certain L≤1 states.

Hard gluon bremsstrahlung effects on gluino pair production

1985 ◽  
Vol 157 (5-6) ◽  
pp. 430-436 ◽  
Author(s):  
F. Herzog ◽  
Z. Kunszt
Keyword(s):  
Pair Production ◽  
Hard Gluon ◽  
Gluon Bremsstrahlung

Evidence for Hard-Gluon Bremsstrahlung in a Deep-Inelastic Neutrino Scattering Experiment

1981 ◽  
Vol 47 (8) ◽  
pp. 556-560 ◽  
Author(s):  
H. C. Ballagh ◽  
H. H. Bingham ◽  
W. B. Fretter ◽  
T. Lawry ◽  
G. R. Lynch ◽  
...  
Keyword(s):  
Neutrino Scattering ◽  
Scattering Experiment ◽  
Hard Gluon ◽  
Gluon Bremsstrahlung

scholarly journals Hard gluon radiation and the top mass value from CDF

1995 ◽  
Vol 348 (1-2) ◽  
pp. 196-200 ◽  
Author(s):  
Bodo Lampe
Keyword(s):  
Gluon Radiation ◽  
Hard Gluon ◽  
Top Mass

scholarly journals Production of top quark pairs in association with a hard gluon to order $\alpha_s^2$

1999 ◽  
Vol 11 (1) ◽  
pp. 127-135 ◽  
Author(s):  
A. Brandenburg
Keyword(s):  
Top Quark ◽  
Quark Pairs ◽  
Hard Gluon ◽  
Top Quark Pairs
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