Results 21 to 30 of about 1,692,769 (205)

Rare kaon decays [PDF]

open access: yesNuclear Physics B - Proceedings Supplements, 1997
10 pages, Latex, espcrc2.sty; Invited Talk presented at 4th KEK Topical Conference on Flavor Physics, Tsukuba, Japan, 29-31 Oct. 1996, to appear in Nucl. Phys.
openaire   +2 more sources

Angular distribution of Λ b 0 → p K − ℓ + ℓ − $$ {\Lambda}_b^0\to p{K}^{-}{\ell}^{+}{\ell}^{-} $$ decays comprising Λ resonances with spin ≤ 5/2

open access: yesJournal of High Energy Physics, 2023
This paper describes the angular distribution of Λ b 0 → Λ → p K − ℓ + ℓ − $$ {\Lambda}_b^0\to \Lambda \left(\to p{K}^{-}\right){\ell}^{+}{\ell}^{-} $$ decays. A full expression is given for the case of multiple interfering spin-states with spin ≤ 5 2 $$
A. Beck, T. Blake, M. Kreps
doaj   +1 more source

Improved theory predictions and global analysis of exclusive b → sμ + μ − processes

open access: yesJournal of High Energy Physics, 2022
We provide improved Standard Model theory predictions for the exclusive rare semimuonic processes B → K (*) μ + μ − and B s → ϕμ + μ − . Our results are based on a novel parametrization of the non-local form factors, which manifestly respects a recently ...
Nico Gubernari   +3 more
doaj   +1 more source

Rare Decays at LHCb

open access: yesMoscow University Physics Bulletin, 2022
The Standard Model (SM) of particle physics is the most advanced theory describing the behaviour and interactions of elementary particles. Despite passing an impressive amount of experimental tests, several deviations from the SM predictions have been observed in recent years in measurements of observables related to rare $b$-hadron decays, prompting ...
openaire   +4 more sources

Fingerprinting CP-violating New Physics with B → Kμ + μ −

open access: yesJournal of High Energy Physics, 2023
The B → Kℓ + ℓ − system is particularly interesting to explore physics beyond the Standard Model. Such effects could provide new sources of CP violation, thereby giving rise to Wilson coefficients which could not only be real, as assumed in most analyses,
Robert Fleischer   +3 more
doaj   +1 more source

Search for the rare decays B0s→μ+μ− and B0→μ+μ− [PDF]

open access: yes, 2011
A search for the decays and B0→μ+μ− is performed with 0.37 fb−1 of pp collisions at collected by the LHCb experiment in 2011. The upper limits on the branching fractions are and B(B0→μ+μ−)
Amato, S   +999 more
core   +2 more sources

Complete analysis on QED corrections to B q → τ + τ −

open access: yesJournal of High Energy Physics, 2023
Motivated by a dynamical enhancement of the electromagnetic corrections by a power of ΛQCD/m b in B d,s → μ + μ − at next-to-leading order (NLO), we extend the QED factorization effects on the leptonic B meson decays with light muon leptons to tauonic ...
Yong-Kang Huang   +3 more
doaj   +1 more source

Heavy quark physics on the lattice with improved nonrelativistic actions [PDF]

open access: yes, 2010
Hadrons containing heavy quarks, in particular b quarks, play an important role in high energy physics. Measurements of their electroweak interactions are used to test the Standard Model and search for new physics.

core   +2 more sources

Rare B decays at LHCb [PDF]

open access: yes, 2022
Rare decays are flavour changing neutral current processes that allow sensitive searches for phenomena beyond the Standard Model (SM). In the SM, rare decays are loop-suppressed and new particles in SM extensions can give significant contributions.
Ruiz, Hugo (Ruiz Pérez)   +1 more
core   +1 more source

Rare B decays [PDF]

open access: yesProceedings of The 13th International Conference on B-Physics at Hadron Machines — PoS(BEAUTY 2011), 2011
Rare radiative, leptonic and semileptonic B meson decays are valuable probes of physics beyond the Standard Model. This talk reviews the sensitivity to new physics of observables related to two rare B decays to be measured in the near future at LHC, B(s) -> mu+ mu- and B -> K* mu+ mu-.
openaire   +3 more sources

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