Results 41 to 50 of about 1,763,375 (163)

Nonlocal form factor of chromomagnetic penguin in B → Kℓ + ℓ − from QCD light-cone sum rules

open access: yesJournal of High Energy Physics
The branching fraction of the B → Kℓ + ℓ − decay has been measured recently by the LHC experiments, showing a deviation from theory predictions based on the Standard Model (SM).
T. Hurth   +5 more
doaj   +1 more source

Rare kaon decays [PDF]

open access: yes, 1997
The phenomenology of rare kaon decays is reviewed, with emphasis on tests of standard model ...
Buchalla, G., Gerhard Buchalla
core   +1 more source

Naturally astrophobic QCD axion

open access: yesJournal of High Energy Physics, 2023
We present a QCD axion model where the couplings of the axion to nucleons, electrons, and muons are naturally suppressed because of the appropriate choice of the Peccei-Quinn charges of the Standard Model fermions.
Marcin Badziak, Keisuke Harigaya
doaj   +1 more source

Inclusive Rare B Decays [PDF]

open access: yes, 2001
We review the present status of rare B decays, focusing on inclusive decay modes and their role in our search for new physics. We also briefly discuss direct CP violation in rare B decays and the rare kaon decays $K^+\to \pi^+\nu\bar{\nu}$ and $K_L \to ...
Hurth, Tobias
core  

Rare phi decays

open access: yes, 2004
The Kloe experiment has collected an integrated luminosity ~ 500 pb–1 up to now, which means ~ 1.65×109 φ decays.
PRIMAVERA, Margherita   +3 more
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

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

Rare b Decays [PDF]

open access: yes, 1995
Rare b decays provide a unique opportunity to measure Standard Model parameters and probe beyond the Standard Model. We review here the experimentalprogress made in measuring these decays, and the importance of future measurements, including the possible
Sheldon Stone   +3 more
core   +1 more source

Study of form factors and observables in B c − → D s ∗ − ℓ + ℓ − $$ {B}_c^{-}\to {D}_s^{\ast -}{\ell}^{+}{\ell}^{-} $$ and B c − → D s ∗ − ν ν ¯ $$ {B}_c^{-}\to {D}_s^{\ast -}\nu \overline{\nu} $$ decays

open access: yesJournal of High Energy Physics
We investigate the decays B c − → D s ∗ − ℓ + ℓ − $$ {B}_c^{-}\to {D}_s^{\left(\ast \right)-}{\ell}^{+}{\ell}^{-} $$ and B c − → D s ∗ − ν ν ¯ $$ {B}_c^{-}\to {D}_s^{\left(\ast \right)-}\nu \overline{\nu} $$ within the Standard Model (SM), employing ...
Utsab Dey, Soumitra Nandi
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
bottom quarks
semi-leptonic decays
kaons
smeft
cp violation
physics
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