DIQUARK FORMATION IN ANGULAR-MOMENTUM-EXCITED BARYONS

2009 ◽  
Vol 24 (10) ◽  
pp. 1987-1994 ◽  
Author(s):  
ANTONIO CARLOS BAPTISTA ANTUNES ◽  
LEILA JORGE ANTUNES
Keyword(s):  
Angular Momentum ◽  
Heavy Quark ◽  
Potential Barrier ◽  
Light Quark ◽  
Heavy Quarks ◽  
Centrifugal Barrier ◽  
Large Angular Momentum

Diquarks, or metastable clusters of two quarks inside baryons, are shown to be produced by angular momentum excitation. In baryons with a light quark and two heavy quarks with large angular momentum (L>2), the centrifugal barrier that appears in the rotation frame of the two heavy quarks prevents the light quark from passing freely between the two heavy quarks. The light quark must tunnelize through this potential barrier, which gives rise to the clusters of a light and a heavy quark.

scholarly journals Some properties of the QQq-quark potential in string models

2021 ◽  
Vol 2021 (5) ◽  
Author(s):  
Oleg Andreev
Keyword(s):  
String Theory ◽  
Heavy Quark ◽  
Light Quark ◽  
String Tension ◽  
Heavy Quarks ◽  
Theory Construction ◽  
Quark Potential ◽  
String Models ◽  
Parameter Values

Abstract We propose a string theory construction which allows us to study properties of the potential of two heavy quarks coupled to a light quark. In such a case, the potential is a function of separation between the heavy quarks. The results show the universality of the string tension and factorization at small separations expected from heavy quark-diquark symmetry. In addition, we make an estimate of the string breaking distance. With the parameter values we use, this distance is found to be almost the same as that for the heavy quark-antiquark potential. We also discuss the heavy quark-quark potential and its relation to Lipkin rule.

scholarly journals Effect of back reaction on light quark energy loss in heavy quark cloud

2020 ◽  
Vol 80 (10) ◽  
Author(s):  
Zi-qiang Zhang ◽  
De-fu Hou
Keyword(s):  
Energy Loss ◽  
Heavy Quark ◽  
Drag Force ◽  
Light Quark ◽  
Heavy Quarks ◽  
Jet Quenching ◽  
Back Reaction ◽  
Strongly Coupled ◽  
Yang Mills ◽  
Quark Energy Loss

AbstractWe study the effect of back reaction on the energy loss of light quarks in strongly coupled $${\mathcal {N}}=4$$ N = 4 supersymmetric Yang–Mills (SYM) plasma, by using the AdS/CFT correspondence. We perform the analysis within falling string and shooting string approaches, respectively. It is shown that the back reaction, arising from the presence of static heavy quarks uniformly distributed over SYM, enhances the energy loss, in agreement with the findings of the drag force and jet quenching parameter.

POLARIZED HADRO- AND PHOTOPRODUCTION OF HEAVY QUARKS IN NLO QCD

2003 ◽  
Vol 18 (08) ◽  
pp. 1477-1480
Author(s):  
I. BOJAK
Keyword(s):  
Heavy Quark ◽  
Heavy Quarks ◽  
Gluon Helicity ◽  
Shed Light

We present the first calculation of the complete NLO QCD corrections to the production of heavy flavors with longitudinally polarized hadrons. This reaction can be used at RHIC to extract the gluon helicity density and may shed light on the "heavy quark enigma". The theoretical uncertainties are briefly discussed.

Deuteron elastic scattering in the large angular momentum limit

1981 ◽  
Vol 371 (3) ◽  
pp. 381-392 ◽  
Author(s):  
R.C. Johnson ◽  
E.J. Stephenson
Keyword(s):  
Angular Momentum ◽  
Elastic Scattering ◽  
Large Angular Momentum

Magnetic Resonance with Large Angular Momentum

1964 ◽  
Vol 135 (1A) ◽  
pp. A39-A43 ◽  
Author(s):  
J. W. Cederberg ◽  
N. F. Ramsey
Keyword(s):  
Angular Momentum ◽  
Magnetic Resonance ◽  
Large Angular Momentum

scholarly journals High-energy resummation in heavy-quark pair hadroproduction

2019 ◽  
Vol 79 (11) ◽  
Author(s):  
A. D. Bolognino ◽  
Francesco Giovanni Celiberto ◽  
M. Fucilla ◽  
D. Yu. Ivanov ◽  
A. Papa
Keyword(s):  
Heavy Quark ◽  
Cross Section ◽  
Center Of Mass ◽  
High Energy ◽  
Heavy Quarks ◽  
Mass Energy ◽  
Center Of Mass Energy ◽  
Large Separation ◽  
Bfkl Approach ◽  
Heavy Quark Pair

AbstractThe inclusive hadroproduction of two heavy quarks, featuring a large separation in rapidity, is proposed as a novel probe channel of the Balitsky–Fadin–Kuraev–Lipatov (BFKL) approach. In a theoretical setup which includes full resummation of leading logarithms in the center-of-mass energy and partial resummation of the next-to-leading ones, predictions for the cross section and azimuthal coefficients are presented for kinematic configurations typical of current and possible future experimental analyses at the LHC.

Sign in / Sign up

Export Citation Format

Share Document