Hadron Production by Electron-Positron Annihilation at 4-GeV Center- of-Mass Energy.

1973 ◽  
Vol 30 (26) ◽  
pp. 1349-1349 ◽  
Author(s):  
A. Litke ◽  
G. Hanson ◽  
A. Hofmann ◽  
J. Koch ◽  
L. Law ◽  
...  
Keyword(s):  
Positron Annihilation ◽  
Center Of Mass ◽  
Hadron Production ◽  
Mass Energy ◽  
Center Of Mass Energy ◽  
Electron Positron Annihilation ◽  
Electron Positron

Hadron Production by Electron-Positron Annihilation at 4-GeV Center-of-Mass Energy

1973 ◽  
Vol 30 (23) ◽  
pp. 1189-1192 ◽  
Author(s):  
A. Litke ◽  
G. Hanson ◽  
A. Hofmann ◽  
J. Koch ◽  
L. Law ◽  
...  
Keyword(s):  
Positron Annihilation ◽  
Center Of Mass ◽  
Hadron Production ◽  
Mass Energy ◽  
Center Of Mass Energy ◽  
Electron Positron Annihilation ◽  
Electron Positron

Hadron Production by Electron - Positron Annihilation at 5 GeV Center - of Mass Energy

1974 ◽  
Vol 32 (8) ◽  
pp. 432-435 ◽  
Author(s):  
G. Tarnopolsky ◽  
J. Eshelman ◽  
M. E. Law ◽  
J. Leong ◽  
H. Newman ◽  
...  
Keyword(s):  
Positron Annihilation ◽  
Center Of Mass ◽  
Hadron Production ◽  
Mass Energy ◽  
Center Of Mass Energy ◽  
Electron Positron Annihilation ◽  
Electron Positron

Muon pair production by electron-positron annihilation at 4 GeV center-of-mass energy

1973 ◽  
Vol 8 (18) ◽  
pp. 1020-1024
Author(s):  
J. Feller ◽  
A. Litke ◽  
R. Madaras ◽  
G. Hanson ◽  
J. Leong ◽  
...  
Keyword(s):  
Pair Production ◽  
Positron Annihilation ◽  
Center Of Mass ◽  
Mass Energy ◽  
Muon Pair ◽  
Center Of Mass Energy ◽  
Electron Positron Annihilation ◽  
Electron Positron ◽  
Muon Pair Production

Observation of antideuteron production in electron-positron annihilation at 10 GeV center of mass energy

1985 ◽  
Vol 157 (4) ◽  
pp. 326-332 ◽  
Author(s):  
H. Albrecht ◽  
U. Binder ◽  
G. Harder ◽  
H. Hasemann ◽  
A. Philipp ◽  
...  
Keyword(s):  
Positron Annihilation ◽  
Center Of Mass ◽  
Mass Energy ◽  
Center Of Mass Energy ◽  
Electron Positron Annihilation ◽  
Electron Positron

scholarly journals Double Charmonium Productions in Electron-Positron Annihilation Using Bethe-Salpeter Approach

2019 ◽  
Vol 2019 ◽  
pp. 1-6
Author(s):  
Hluf Negash ◽  
Shashank Bhatnagar
Keyword(s):  
Positron Annihilation ◽  
Cross Sections ◽  
Production Cross ◽  
Center Of Mass ◽  
Theoretical Models ◽  
Final States ◽  
Charmonium Production ◽  
Center Of Mass Energy ◽  
Electron Positron Annihilation ◽  
Electron Positron

We calculate the double charmonium production cross-section within the framework of 4×4 Bethe-Salpeter Equation in the electron-positron annihilation, at center of mass energy s=10.6GeV, that proceeds through the exchange of a single virtual photon. In this calculation, we make use of the full Dirac structure of 4D BS wave functions of these charmonia, with the incorporation of all the Dirac covariants (both leading and subleading). The calculated cross-sections for the double charmonium productions for final states, (J/Ψ,ηc), (Ψ′,ηc), (J/Ψ,ηc′), and (Ψ′,ηc′), are close to experimental data and in broad agreement with results of other theoretical models.

scholarly journals Search for the rare semi-leptonic decay J/ψ → D−e+νe + c.c.

2021 ◽  
Vol 2021 (6) ◽  
Author(s):  
◽  
M. Ablikim ◽  
M. N. Achasov ◽  
P. Adlarson ◽  
S. Ahmed ◽  
...  
Keyword(s):  
Confidence Level ◽  
Branching Fraction ◽  
Center Of Mass ◽  
Leptonic Decay ◽  
Mass Energy ◽  
Center Of Mass Energy ◽  
Upper Limit ◽  
Electron Positron

Abstract Using 10.1 × 109J/ψ events produced by the Beijing Electron Positron Collider (BEPCII) at a center-of-mass energy $$ \sqrt{s} $$ s = 3.097 GeV and collected with the BESIII detector, we present a search for the rare semi-leptonic decay J/ψ → D−e+νe + c.c. No excess of signal above background is observed, and an upper limit on the branching fraction ℬ(J/ψ → D−e+νe + c. c.) < 7.1 × 10−8 is obtained at 90% confidence level. This is an improvement of more than two orders of magnitude over the previous best limit.

scholarly journals Prospects for rare and forbidden hyperon decays at BESIII

2017 ◽  
Vol 12 (5) ◽  
Author(s):  
Hai-Bo Li
Keyword(s):  
Rare Decays ◽  
Branching Fractions ◽  
Center Of Mass ◽  
Final States ◽  
Electron Spectrometer ◽  
Mass Energy ◽  
Measurement Sensitivity ◽  
Center Of Mass Energy ◽  
Electron Positron ◽  
Hyperon Decays

Abstract The study of hyperon decays at the Beijing Electron Spectrometer III (BESIII) is proposed to investigate the events of J/ψ decay into hyperon pairs, which provide a pristine experimental environment at the Beijing Electron–Positron Collider II. About 106–108 hyperons, i.e., Λ, Σ, Ξ, and Ω, will be produced in the J/ψ and ψ(2S) decays with the proposed data samples at BESIII. Based on these samples, the measurement sensitivity of the branching fractions of the hyperon decays is in the range of 10−5–10−8. In addition, with the known center-of-mass energy and “tag technique”, rare decays and decays with invisible final states can be probed.

Inclusive hadron production in upsilon decays and in nonresonant electron-positron annihilation at 10.49 GeV

1985 ◽  
Vol 31 (9) ◽  
pp. 2161-2191 ◽  
Author(s):  
S. Behrends ◽  
K. Chadwick ◽  
T. Gentile ◽  
Jan M. Guida ◽  
Joan A. Guida ◽  
...  
Keyword(s):  
Positron Annihilation ◽  
Hadron Production ◽  
Electron Positron Annihilation ◽  
Electron Positron
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