Fragmentation function of pseudoscalar heavy quarkonia in the ordinary and noncommutative SM

2021 ◽  
Vol 136 (8) ◽  
Author(s):  
S. Mohammad Moosavi Nejad ◽  
Omid Bayat
Keyword(s):  
Fragmentation Function ◽  
Heavy Quarkonia

scholarly journals DOUBLE PARTON FRAGMENTATION FUNCTION AND ITS EVOLUTION IN QUARKONIUM PRODUCTION

2014 ◽  
Vol 25 ◽  
pp. 1460040
Author(s):  
ZHONG-BO KANG
Keyword(s):  
Fragmentation Function ◽  
Evolution Equations ◽  
Heavy Quarkonia ◽  
Large Transverse Momentum ◽  
Heavy Quark Mass ◽  
Qcd Factorization ◽  
Factorization Formalism ◽  
Quarkonium Production ◽  
Large Enhancement ◽  
Fragmentation Functions

We summarize the results of a recent study on a new perturbative QCD factorization formalism for the production of heavy quarkonia of large transverse momentum pT at collider energies. Such a new factorization formalism includes both the leading power (LP) and next-to-leading power (NLP) contributions to the cross section in the [Formula: see text] expansion for heavy quark mass mQ. For the NLP contribution, the so-called double parton fragmentation functions are involved, whose evolution equations have been derived. We estimate fragmentation functions in the non-relativistic QCD formalism, and found that their contribution reproduce the bulk of the large enhancement found in explicit NLO calculations in the color singlet model. Heavy quarkonia produced from NLP channels prefer longitudinal polarization, in contrast to the single parton fragmentation function. This might shed some light on the heavy quarkonium polarization puzzle.

Meson B fragmentation function with consideration of mass corrections

2019 ◽  
Vol 19 (2) ◽  
pp. 425-435
Author(s):  
M Soleymaninia ◽  
S M Moosavi Nejad ◽  
◽  
Keyword(s):  
Fragmentation Function

scholarly journals Exclusive heavy vector meson electroproduction to NLO in collinear factorisation

2021 ◽  
Vol 2021 (8) ◽  
Author(s):  
C. A. Flett ◽  
J. A. Gracey ◽  
S. P. Jones ◽  
T. Teubner
Keyword(s):  
Phase Space ◽  
Vector Meson ◽  
Heavy Quarkonia ◽  
Diffractive Scattering ◽  
Meson Electroproduction

Abstract We compute the exclusive electroproduction, γ*p → Vp, of heavy quarkonia V to NLO in the collinear factorisation scheme, which has been formally proven for this process. The inclusion of an off-shell virtuality Q2 carried by the photon extends the photoproduction phase space of the exclusive heavy quarkonia observable to electroproduction kinematics. This process is relevant for diffractive scattering at HERA and the upcoming EIC, as well as at the proposed LHeC and FCC.

scholarly journals Energy loss of heavy quarkonia in hot QCD plasmas

2021 ◽  
Vol 103 (5) ◽  
Author(s):  
Juhee Hong ◽  
Su Houng Lee
Keyword(s):  
Energy Loss ◽  
Heavy Quarkonia

scholarly journals The thermal width of heavy quarkonia moving in quark–gluon plasma

2008 ◽  
Vol 659 (3) ◽  
pp. 621-627 ◽  
Author(s):  
Taesoo Song ◽  
Yongjae Park ◽  
Su Houng Lee ◽  
Cheuk-Yin Wong
Keyword(s):  
Quark Gluon Plasma ◽  
Gluon Plasma ◽  
Heavy Quarkonia

scholarly journals Predictions for boson-jet observables and fragmentation function ratios from a hybrid strong/weak coupling model for jet quenching

2016 ◽  
Vol 2016 (3) ◽  
Author(s):  
Jorge Casalderrey-Solana ◽  
Doga Can Gulhan ◽  
José Guilherme Milhano ◽  
Daniel Pablos ◽  
Krishna Rajagopal
Keyword(s):  
Fragmentation Function ◽  
Weak Coupling ◽  
Coupling Model ◽  
Jet Quenching ◽  
Jet Observables

scholarly journals Pseudovector heavy quarkonia in e + e −2 collisions

JETP Letters ◽  
1996 ◽  
Vol 63 (8) ◽  
pp. 601-606 ◽  
Author(s):  
N. N. Achasov
Keyword(s):  
Heavy Quarkonia

scholarly journals Sequential suppression of quarkonia and high-energy nucleus–nucleus collisions

2015 ◽  
Vol 30 (37) ◽  
pp. 1550205 ◽  
Author(s):  
Nirupam Dutta ◽  
Nicolas Borghini
Keyword(s):  
High Energy ◽  
Heavy Quarkonia ◽  
Adiabatic Evolution ◽  
Nuclear Collisions

According to the usual application of the sequential-suppression picture to the dynamics of heavy quarkonia in the hot medium formed in ultrarelativistic nuclear collisions, quark–antiquark pairs created in a given bound or unbound state remain in that same state as the medium evolves. We argue that this scenario implicitly assumes an adiabatic evolution of the quarkonia and we show that the validity of the adiabaticity assumption is questionable.

scholarly journals New mass relations for heavy quarkonia

1997 ◽  
Vol 56 (11) ◽  
pp. 7119-7123 ◽  
Author(s):  
L. Burakovsky ◽  
T. Goldman ◽  
L. P. Horwitz
Keyword(s):  
Heavy Quarkonia
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