CROSS-SECTION FOR DOUBLE CHARMONIUM PRODUCTION IN ELECTRON–POSITRON ANNIHILATION AT ENERGY $\sqrt{s} = 10.6 {\rm GeV}$

In this work we study the process e++e-→J/Ψ+ηc at energy [Formula: see text] observed recently at B-factories whose measurements were made by Babar and Belle groups. We calculate the cross-section for this process in the Bethe–Salpeter formalism under Covariant Instantaneous Anstaz. To simplify our calculation, the heavy quark approximation is employed in the quark and gluon propagators. In the exclusive process of e+e- annihilation into two heavy quarkonia, the cross-section calculated in this scenario is compatible with the experimental data of Babar and Belle.

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STRING FRAGMENTATION MODEL AND INCLUSIVE PRODUCTION OF K MESONS

International Journal of Modern Physics A ◽

10.1142/s0217751x92001630 ◽

1992 ◽

Vol 07 (16) ◽

pp. 3665-3690

Author(s):

MOHAMMAD SALEEM ◽

MUHAMMAD RAFIQUE

Keyword(s):

Experimental Data ◽

Positron Annihilation ◽

Cross Section ◽

Inclusive Production ◽

Fragmentation Model ◽

Electron Positron Annihilation ◽

Electron Positron ◽

The Mean ◽

K Mesons ◽

String Fragmentation

An account of the inclusive production of K mesons in electron-positron annihilation is given. The most recent measurements on the cross section are exhibited and compared with the predictions of the Lund model. The model gives a satisfactory agreement with the experimental data. The results from different experiments on cross section, the mean multiplicity per multihadronic event and various other characteristics are found to be consistent.

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Influence of anomalous thresholds in electron-positron annihilation into hadrons: The e+e− → ϱππ cross section

Annals of Physics ◽

10.1016/0003-4916(76)90169-x ◽

1976 ◽

Vol 98 (2) ◽

pp. 554

Keyword(s):

Positron Annihilation ◽

Cross Section ◽

Electron Positron Annihilation ◽

Electron Positron

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Factorization of the dijet cross section in electron-positron annihilation with jet algorithms

Physical Review D ◽

10.1103/physrevd.92.034012 ◽

2015 ◽

Vol 92 (3) ◽

Cited By ~ 8

Author(s):

Junegone Chay ◽

Chul Kim ◽

Inchol Kim

Keyword(s):

Positron Annihilation ◽

Cross Section ◽

Dijet Cross Section ◽

Electron Positron Annihilation ◽

Electron Positron ◽

Jet Algorithms

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$\alpha_s$ from the total cross section of electron-positron annihilation into hadrons

10.22323/1.260.0047 ◽

2016 ◽

Author(s):

Johann Kühn ◽

Konstantin Chetyrkin

Keyword(s):

Total Cross Section ◽

Positron Annihilation ◽

Cross Section ◽

Electron Positron Annihilation ◽

Electron Positron

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Vector meson production in electron positron annihilation process

International Journal of Modern Physics A ◽

10.1142/s0217751x21501207 ◽

2021 ◽

pp. 2150120

Author(s):

Weihua Yang ◽

Fei Huang

Keyword(s):

Differential Cross Section ◽

Vector Meson ◽

Positron Annihilation ◽

Cross Section ◽

Differential Cross ◽

High Energy ◽

Annihilation Process ◽

Electron Positron Annihilation ◽

Electron Positron ◽

Fragmentation Functions

When tunneling events induced by nontrivial configurations of the quantum chromodynamics gauge fields are taken into consideration, parity violating quantities emerge. Based on this consideration, parity-odd fragmentation functions can be introduced in the high energy reactions. In this paper, we calculate the differential cross-section in terms of both the parity-even and parity-odd fragmentation functions in semi-inclusive electron positron annihilation process. Semi-inclusive implies that not only a vector meson in one jet but also the back-to-back jet is measured in this reaction. According to the differential cross-section, we further calculate the azimuthal asymmetries and hadron polarizations in terms of fragmentation functions. A method of measuring the parity violating effects in the semi-inclusive annihilation process is suggested.

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