High-energy meson-baryon scattering in a quark model

1974 ◽  
Vol 9 (7) ◽  
pp. 2056-2063 ◽  
Author(s):  
Ramesh Chand
Keyword(s):  
Quark Model ◽  
High Energy

Quark Model and High Energy Collisions

10.1142/0111 ◽  
1985 ◽  
Author(s):  
V Anisovich ◽  
M Kobrinsky ◽  
J Nyiri ◽  
Yu Shabelski
Keyword(s):  
Quark Model ◽  
High Energy ◽  
High Energy Collisions

scholarly journals The production of charged-kaon pairs in proton–antiproton collisions: The role of higher-twist mechanism

2018 ◽  
Vol 33 (28) ◽  
pp. 1850166 ◽  
Author(s):  
M. Demirci ◽  
A. I. Ahmadov
Keyword(s):  
Transverse Momentum ◽  
Pair Production ◽  
Quark Model ◽  
Inclusive Cross Section ◽  
Gluon Fusion ◽  
High Energy ◽  
Light Front ◽  
Charged Kaon ◽  
Proton Antiproton ◽  
Direct Production

The higher-twist (HT) contribution to the charged-kaon pair production in the high energy proton–antiproton collisions at large transverse momentum [Formula: see text] is investigated by using the frozen coupling constant approach for various kaon distribution amplitudes (DAs), which are predicted by light-cone formalism, the light-front quark model, the nonlocal chiral quark model and the light-front holographic AdS/CFT approach. In the numerics, the dependencies of the HT contribution on the transverse momentum [Formula: see text], the rapidity [Formula: see text], and the variable [Formula: see text] are discussed with special emphasis put on DAs. The HT contribution is also compared with the leading-twist ones. It is shown that the HT contributions are dependent on the kaon DAs and also some other phenomenological parameters such as momentum cutoff parameter [Formula: see text]. Inclusive kaon pair production presents a remarkable test case in which HT terms dominate those of LT in certain kinematic regions. The HT direct production process via gluon–gluon fusion contributes significantly to the inclusive cross-section at large [Formula: see text].

Born term for high-energy meson-hadron collisions from QCD and chiral quark model

1988 ◽  
Vol 215 (4) ◽  
pp. 757-762 ◽  
Author(s):  
Wolfgang Ochs ◽  
Tokuzo Shimada
Keyword(s):  
Quark Model ◽  
Born Term ◽  
High Energy ◽  
Chiral Quark Model

scholarly journals High energy elastic pp scattering in additive quark model

2014 ◽  
Vol 2014 (11) ◽  
Author(s):  
Yu. M. Shabelski ◽  
A. G. Shuvaev
Keyword(s):  
Quark Model ◽  
High Energy

(ANTI-)STRANGE DENSITY AND CONTRIBUTION OF HEAVY FLAVOR, $F_2^c$, TO THE NUCLEON STRUCTURE FUNCTION IN THE CHIRAL QUARK MODEL

2012 ◽  
Vol 27 (22) ◽  
pp. 1250120 ◽  
Author(s):  
HODA NEMATOLLAHI ◽  
MOHAMMAD MEHDI YAZDANPANAH ◽  
ABOLFAZL MIRJALILI
Keyword(s):  
Structure Function ◽  
Quark Model ◽  
Charm Quark ◽  
High Energy ◽  
Energy Scale ◽  
Proton Structure Function ◽  
Chiral Quark Model ◽  
Heavy Flavor ◽  
Gaussian Form ◽  
Nucleon Structure Function

A new approach is employed to provide the required expressions for the bare constituent quark densities in the proton. In this approach, we assume the bare quark densities take a Gaussian form in four-momentum space, which fulfill more properly the desired constrains of parton densities inside the proton. Using the modified chiral quark model and the related convolutions, the parton densities inside the proton are obtained. By evolving the gluon density to high energy scale, the contribution of charm quark to the proton structure function can be extracted and it is found in good agreement with the available experimental data. Sea quark ((anti-)strange) densities are calculated and compared with the ones from some phenomenological and experimental groups in which consistent results are obtained. What makes the results more valuable is that the initial framework is completely theoretical and we do not need to resort to any parametrizations in our calculations.

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