scholarly journals Rare decays of the positronium ion and molecule, Ps− → e−γ and Ps2 → e+e−γ , γγ , e+e−

2021 ◽  
Vol 104 (5) ◽  
Author(s):  
M. Jamil Aslam ◽  
Wen Chen ◽  
Andrzej Czarnecki ◽  
Samiur Rahman Mir ◽  
Muhammad Mubasher
Keyword(s):  
Rare Decays

scholarly journals Long-lived light neutralinos at Belle II

2021 ◽  
Vol 2021 (2) ◽  
Author(s):  
Sourav Dey ◽  
Claudio O. Dib ◽  
Juan Carlos Helo ◽  
Minakshi Nayak ◽  
Nicolás A. Neill ◽  
...  
Keyword(s):  
Monte Carlo ◽  
Monte Carlo Simulations ◽  
Parameter Space ◽  
Rare Decays ◽  
Final States ◽  
Charged Pions ◽  
Belle Ii ◽  
Background Events ◽  
Displaced Vertex

Abstract We consider light neutralinos of mass about 1 GeV, produced from τ lepton rare decays at Belle II, in the context of R-parity-violating (RPV) supersymmetry. With large and clean samples of τ leptons produced at the Belle II experiment, excellent sensitivity to such light neutralinos with the exotic signatures of displaced vertices is expected. We focus on two benchmark scenarios of single RPV operators, $$ {\lambda}_{311}^{\prime }{L}_3{Q}_1{\overline{D}}_1 $$ λ 311 ′ L 3 Q 1 D ¯ 1 and $$ {\lambda}_{312}^{\prime }{L}_3{Q}_1{\overline{D}}_2 $$ λ 312 ′ L 3 Q 1 D ¯ 2 , which induce both the production and decay of the lightest neutralino. For the reconstruction of a displaced vertex, we require at least two charged pions in the final states. We perform Monte-Carlo simulations for both signal and background events, and find that Belle II can explore regions in the parameter space competitive with other probes. In particular, for the $$ {\lambda}_{311}^{\prime } $$ λ 311 ′ scenario, it can put limits up to two orders of magnitude stronger than the current bounds.

Event generators for η/η′ rare decays into π + π − l + l − and e + e − μ + μ −

2012 ◽  
Vol 36 (10) ◽  
pp. 926-931 ◽  
Author(s):  
Zhen-Yu Zhang ◽  
Li-Qing Qin ◽  
Shuang-Shi Fang
Keyword(s):  
Rare Decays

scholarly journals Penguin and rare decays in BABAR

2014 ◽  
Vol 556 ◽  
pp. 012047 ◽  
Author(s):  
Simon Akar ◽  
Keyword(s):  
Rare Decays

scholarly journals The rare decays beyond leading logarithms

1994 ◽  
Vol 412 (1-2) ◽  
pp. 106-142 ◽  
Author(s):  
Gerhard Buchalla ◽  
Andrzej J. Buras
Keyword(s):  
Rare Decays

scholarly journals Progress on semi-leptonic B(s) decays

2014 ◽  
Vol 29 (20) ◽  
pp. 1430019 ◽  
Author(s):  
Giulia Ricciardi
Keyword(s):  
Rare Decays ◽  
Current Status ◽  
Matrix Elements ◽  
Ckm Matrix ◽  
The Absolute ◽  
Ckm Matrix Elements

We report on the current status of semi-leptonic B(s) decays, including rare decays, and the extraction of the absolute values of the CKM matrix elements |Vcb| and |Vub|.

μ → eγ and other rare decays in theSU 6 superunified gauge theory

1977 ◽  
Vol 42 (1) ◽  
pp. 67-84 ◽  
Author(s):  
M. Abud ◽  
C. A. Savoy
Keyword(s):  
Gauge Theory ◽  
Rare Decays

Rare decays of the top quark in the technicolour model with a massless scalar doublet

1996 ◽  
Vol 22 (3) ◽  
pp. 305-314 ◽  
Author(s):  
Gongru Lu ◽  
Yang Hua ◽  
Xuelei Wang ◽  
Jinmin Yang ◽  
Wenqi Sun
Keyword(s):  
Rare Decays ◽  
Top Quark ◽  
Massless Scalar

Semi-leptonic and rare decays

2001 ◽  
Vol 27 (6) ◽  
pp. 1159-1160
Author(s):  
F Borzumati ◽  
T J Champion ◽  
M Aoki ◽  
A Bevan ◽  
W N Cottingham ◽  
...  
Keyword(s):  
Rare Decays
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