Results 61 to 70 of about 1,692,769 (205)

Non-leptonic B-decays in and beyond QCD factorisation [PDF]

open access: yes, 2005
This thesis examines the non-leptonic B-decays within QCD factorization and beyond, to challenge the assumptions and limitations of the method. We analyse the treatment of the distribution amplitudes of light mesons and present a new model described by ...
Talbot, Angelique N.   +1 more
core  

Impact of indirect CP violation on Br(K S → μ + μ − ) ℓ=0

open access: yesJournal of High Energy Physics, 2023
The decay K S → (μ + μ − ) ℓ=0, with the final muon pair in an angular-momentum zero state, is a sensitive probe of short-distance physics. It has recently been shown how to extract this branching ratio from neutral kaon decay data. We point out that the
Joachim Brod, Emmanuel Stamou
doaj   +1 more source

THEORY OF RARE KAON DECAYS [PDF]

open access: yesB Physics and CP Violation, 2000
We review some recent theoretical results on rare kaon decays. Particular attention is devoted to find Standard Model tests. This is theoretically easy in $K\to πν\barν$, while a careful study of the long distance contributions is needed for $K_{L}\to π^{0}e% \bar{e}$, $K_{L}\to μ\barμ$ and $K\to ππγ$
openaire   +2 more sources

Rare heavy-flavour decays

open access: yes, 2021
The search and study of rare decays of B hadrons and of the $\tau$ lepton are among the most promising approaches of putting the Standard Model of particle physics to the test.
Boletti, Alessio, Alessio Boletti
core   +1 more source

SCET sum rules for Λ b → Λℓ + ℓ − , Λγ decays

open access: yesJournal of High Energy Physics
We construct light-cone sum rules for various types of effective form factors in the Λ b → Λℓ + ℓ − and Λ b → Λγ decays by analyzing vacuum-to-Λ b (or γ *-to-Λ b ) correlation functions with the light Λ-baryon interpolating current.
Long-Shun Lu   +3 more
doaj   +1 more source

Search for the Higgs boson decays to a ρ0, ϕ, or K⁎0 meson and a photon in proton-proton collisions at s=13TeV

open access: yesPhysics Letters B
Three rare decay processes of the Higgs boson to a ρ(770)0, ϕ(1020), or K⁎(892)0 meson and a photon are searched for using s=13TeV proton-proton collision data collected by the CMS experiment at the LHC. Events are selected assuming the mesons decay into
A. Hayrapetyan   +2401 more
doaj   +1 more source

A precision relation between Γ(K → μ + μ − )(t) and B K L → μ + μ − / B K L → γγ $$ \mathcal{B}\left({K}_L\to {\mu}^{+}{\mu}^{-}\right)/\mathcal{B}\left({K}_L\to \gamma \gamma \right) $$

open access: yesJournal of High Energy Physics, 2023
We find that the phase appearing in the unitarity relation between B K L → μ + μ − $$ \mathcal{B}\left({K}_L\to {\mu}^{+}{\mu}^{-}\right) $$ and B K L → γγ $$ \mathcal{B}\left({K}_L\to \gamma \gamma \right) $$ is equal to the phase shift in the ...
Avital Dery   +4 more
doaj   +1 more source

Rare kaon decays revisited

open access: yesPhysics Letters B, 2004
We present an updated discussion of $K\raπ\bar{l} l$ decays in a combined framework of chiral perturbation theory and Large--$N_c$ QCD, which assumes the dominance of a minimal narrow resonance structure in the invariant mass dependence of the $ \bar{l} l$ pair.
Friot, Samuel   +2 more
openaire   +2 more sources

Rare kaon decays

open access: yes, 1999
7 pages LaTeX, Talk given at La Thuile Conference, 28th February- 7th March '99.
openaire   +3 more sources

Constraints on ``rare'' dyon decays

open access: yesJournal of High Energy Physics, 2008
27 ...
Mukhi, Sunil, Nigam, Rahul
openaire   +2 more sources

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