Results 101 to 110 of about 5,868 (157)

Study of form factors and observables in B c − $$ {B}_c^{-} $$ → D ¯ ∗ 0 ℓ − ν ¯ ℓ $$ {\overline{D}}^{\left(\ast \right)0}{\ell}^{-}{\overline{\nu}}_{\ell } $$ and B c − $$ {B}_c^{-} $$ → D (∗)− ℓ + ℓ − decays

open access: yesJournal of High Energy Physics
We investigate the decays B c − $$ {B}_c^{-} $$ → D ¯ ∗ 0 ℓ − ν ¯ ℓ $$ {\overline{D}}^{\left(\ast \right)0}{\ell}^{-}{\overline{\nu}}_{\ell } $$ and B c − $$ {B}_c^{-} $$ → D (∗)− ℓ + ℓ − within the Standard Model (SM), employing perturbative QCD (pQCD ...
Utsab Dey, Soumitra Nandi
doaj   +1 more source

Semi-leptonic news [PDF]

open access: yes, 1989
We present our recent results for the semi-leptonic decays K {yields} {pi}e{nu}, D {yields} Ke{nu}, D {yields} {pi}e{nu} and some exploratory data on B {yields} De{nu} and B {yields} {pi}e{nu}.
El-Khadra, Aida X.   +2 more
core  

Correlated study on some B c → P and B c → S wave channels in light of new inputs

open access: yesJournal of High Energy Physics
This study investigates the decay modes of the B c meson, focusing on semileptonic and nonleptonic decay into S and P wave charmonia. The primary objective is to extract the shape parameter of the B c meson distribution amplitude through a data-driven ...
Utsab Dey, Soumitra Nandi
doaj   +1 more source

Search for heavy neutral leptons in decays of W bosons using leptonic and semi-leptonic displaced vertices in $\sqrt{s} = 13$ TeV $pp$ collisions with the ATLAS detector [PDF]

open access: yes
A search is performed for long-lived heavy neutral leptons (HNLs), produced through the decay of a $W$ boson along with a muon or electron. Two channels are explored: a leptonic channel, in which the HNL decays into two leptons and a neutrino, and a semi-
Bamwidhi, Isaac   +499 more
core   +3 more sources

On soft contributions to the B − → γ * form factors

open access: yesJournal of High Energy Physics
The photoleptonic decay B − → γ ℓ − ν ¯ $$ {B}^{-}\to \gamma {\ell}^{-}\overline{\nu} $$ is the simplest low-energy process that probes the substructure of the B meson, making it an excellent candidate to determine the parameters of B-meson light-cone ...
Aoife Bharucha   +2 more
doaj   +1 more source

Searches for Rare Leptonic and Semileptonic Charm Decays at BaBar [PDF]

open access: yes, 2007
Recent results from leptonic and semi-leptonic charm decays at the BABAR B-factory are presented. The measurement of f{sub D{sub s}} from the D{sub s}{sup +} {yields} {mu}{sup +}{nu} channel is presented.
Jackson, Paul D.
core  

Disentangling new physics in K → πν ν ¯ $$ K\to \pi \nu \overline{\nu} $$ and B → K K ∗ ν ν ¯ $$ B\to K\left({K}^{\ast}\right)\nu \overline{\nu} $$ observables

open access: yesJournal of High Energy Physics
We investigate the possibility of disentangling different new physics contributions to the rare meson decays and through kinematic distributions in the missing energy .
Andrzej J. Buras   +2 more
doaj   +1 more source

Leptonic decays of light states and rare B decays [PDF]

open access: yes, 2020
Leptonic decays of light states and rare B ...
Grummer, Aidan
core  

WG2 conveners' report: Vtd and Vts, B-Bar mixing, radiative penguin and rare (semi)leptonic decays [PDF]

open access: yes, 2003
We introduce the Working Group 2 proceedings contributions from the 2nd workshop on the CKM Unitarity Triangle and note their connection to the proceedings of the first workshop.
Willocq, Stephane   +2 more
core  

Effective field theory analysis of rare |∆c| = |∆u| = 1 charm decays

open access: yesJournal of High Energy Physics
We perform a global analysis of |∆c| = |∆u| = 1 transitions using recent data on D 0 → μ + μ − , D + → π + μ + μ − , Λ c → p μ + μ − , and D 0 → π + π − μ + μ − decays, and work out constraints on new physics Wilson coefficients C 7 , 9 , 10 ′ $$ {C}_{7 ...
Hector Gisbert   +2 more
doaj   +1 more source

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