Color-singlet states in a hadronic quark-cluster basis

1987 ◽  
Vol 2 (4) ◽  
pp. 145-154 ◽  
Author(s):  
P. Gonz�lez ◽  
V. Vento
Keyword(s):  
Color Singlet ◽  
Singlet States

scholarly journals On the Color-Singlet States in Many-Quark Model with the $su(4)$-Algebraic Structure. III

2011 ◽  
Vol 126 (2) ◽  
pp. 313-330
Author(s):  
Yasuhiko Tsue ◽  
Constança Providência ◽  
João da Providência ◽  
Masatoshi Yamamura
Keyword(s):  
Quark Model ◽  
Algebraic Structure ◽  
Color Singlet ◽  
Singlet States

ON THE STRONG VAN DER WAALS FORCES BETWEEN HADRONS DUE TO CONFINING POTENTIALS

1987 ◽  
Vol 02 (01) ◽  
pp. 265-272 ◽  
Author(s):  
A. O. BARUT ◽  
R. RACZKA
Keyword(s):  
Long Range ◽  
Bound States ◽  
Degrees Of Freedom ◽  
Van Der Waals ◽  
Van Der Waals Forces ◽  
Color Singlet ◽  
Singlet States ◽  
Color Scheme

The problem of long range forces between hadrons is re-examined. Without color degrees of freedom the confining potentials lead to unacceptably large van der Waals forces. The color degrees of freedom are investigated in the case of mesons taking into account both of the color singlet states of four constituents. The consistency of the color scheme requires the existence of four-quark bound states as well as two separate mesons and puts still restrictions on the confining potentials.

scholarly journals On the Color-Singlet States in Many-Quark Model with the su(4)-Algebraic Structure. I

2011 ◽  
Vol 126 (1) ◽  
pp. 115-134
Author(s):  
Yasuhiko Tsue ◽  
Constança Providência ◽  
João da Providência ◽  
Masatoshi Yamamura
Keyword(s):  
Quark Model ◽  
Algebraic Structure ◽  
Color Singlet ◽  
Singlet States

FRACTIONAL CHARGED COLOR SINGLET STATES AND STRING UNIFICATION

1992 ◽  
Vol 07 (16) ◽  
pp. 1485-1495 ◽  
Author(s):  
DAVID BAILIN ◽  
ALEX LOVE
Keyword(s):  
Gauge Group ◽  
Gauge Coupling ◽  
Low Energy ◽  
Coupling Constants ◽  
Grand Unification ◽  
Color Singlet ◽  
Singlet States ◽  
Gauge Couplings

The question of whether contributions of exotic multiplets of the gauge group to the running of gauge coupling constants from the string scale to low energy can lead to consistency with the precision low energy values of gauge couplings is discussed for theories with SO(6)×SO(4), SU(3)×SU(3)×SU(3) and flipped SU(5)×U(1) grand unification.

scholarly journals Collinear expansion for color singlet cross sections

2020 ◽  
Vol 2020 (9) ◽  
Author(s):  
Markus A. Ebert ◽  
Bernhard Mistlberger ◽  
Gherardo Vita
Keyword(s):  
Cross Section ◽  
Cross Sections ◽  
Production Cross ◽  
Gluon Fusion ◽  
Building Blocks ◽  
Color Singlet ◽  
Final State ◽  
Beam Function ◽  
Kinematic Limit ◽  
State Radiation

Abstract We demonstrate how to efficiently expand cross sections for color-singlet production at hadron colliders around the kinematic limit of all final state radiation being collinear to one of the incoming hadrons. This expansion is systematically improvable and applicable to a large class of physical observables. We demonstrate the viability of this technique by obtaining the first two terms in the collinear expansion of the rapidity distribution of the gluon fusion Higgs boson production cross section at next-to-next-to leading order (NNLO) in QCD perturbation theory. Furthermore, we illustrate how this technique is used to extract universal building blocks of scattering cross section like the N-jettiness and transverse momentum beam function at NNLO.

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