Results 81 to 90 of about 2,071 (183)

The q 2 moments in inclusive semileptonic B decays

Journal of High Energy Physics
We compute the first moments of the q 2 distribution in inclusive semileptonic B decays as functions of the lower cut on q 2, confirming a number of results given in the literature and adding the O α s 2 β 0 $$ O\left({\alpha}_s^2{\beta}_0\right) $$ BLM ...
G. Finauri, P. Gambino
doaj   +1 more source

Quark-hadron duality violations and higher-order 1/m b corrections in inclusive semileptonic B decays

Journal of High Energy Physics
The theoretical description and data for inclusive semileptonic B decays have reached incredible precision. This motivated us to re-animate the discussion of possible Quark-Hadron Duality violations.
Thomas Mannel, Ilija S. Milutin, Rens Verkade, K. Keri Vos   +3 more
doaj   +1 more source

Constraints on the parameters of the $V_{CKM}$ matrix at the end of 1997

, 1998
29 ...
Parodi, F., Roudeau, P., Stocchi, A.
openaire   +3 more sources

Testing the CKM parameters with parity violating longitudinal muon polarization in K+ → π+μ+μ−

Nuclear Physics B, 1993
We point out that the parity violating longitudinal muon polarization PL in the decay K+→π+μ+μ− is closely related to the short-distance part of the decay amplitude in KL → μ+μ−. M Measuring such polarization would provide not only a rather clean test on the CKM parameter ϱ, but also a check on the short-distance contribution to KL → μ+μ−. The possible
G. Bélanger, C.Q. Geng, P. Turcotte
openaire   +1 more source

Constraints on the parameters of the CKM matrix by End 1998

, 1999
26 ...
PARODI, FABRIZIO, P. Roudeau, A. Stocchi
openaire   +4 more sources

New physics searches via angular distributions of B ¯ → D ∗ → Dπ τ → ℓ ν τ ν ¯ ℓ ν ¯ τ $$ \overline{B}\to {D}^{\ast}\left(\to D\pi \right)\tau \left(\to \ell {\nu}_{\tau }{\overline{\nu}}_{\ell}\right){\overline{\nu}}_{\tau } $$ decays

Journal of High Energy Physics
The study of B ¯ → D ∗ τ ν ¯ τ $$ \overline{B}\to {D}^{\ast}\tau {\overline{\nu}}_{\tau } $$ angular distribution can be used to obtain information about new physics (or beyond the Standard Model) couplings, which are motivated by various B anomalies ...
Bhubanjyoti Bhattacharya, Thomas E. Browder, Alakabha Datta, Tejhas Kapoor, Emi Kou, Lopamudra Mukherjee   +5 more
doaj   +1 more source

Inclusive semileptonic b → c ℓ ν ¯ $$ b\to c\ell \overline{\nu} $$ decays to order 1 / m b 5 $$ 1/{m}_b^5 $$

Journal of High Energy Physics
Inclusive semileptonic B → X c ℓ ν ¯ $$ B\to {X}_c\ell \overline{\nu} $$ decays can be described in the Heavy Quark Expansion (HQE) and allow for a precision determination of the CKM element |V cb |.
Thomas Mannel, Ilija S. Milutin, K. Keri Vos   +2 more
doaj   +1 more source

Complete O α s 2 $$ \mathcal{O}\left({\alpha}_s^2\right) $$ corrections to the leptonic invariant mass spectrum in b → X c l ν ¯ l $$ b\to {X}_cl{\overline{\nu}}_l $$ decay

Journal of High Energy Physics
In the determination of the Cabibbo-Kobayashi-Maskawa matrix element |V cb | from inclusive semileptonic B-meson decays, moments of the leptonic invariant mass spectrum constitute valuable observables.
Mateusz Czaja, Mikołaj Misiak, Abdur Rehman   +2 more
doaj   +1 more source

Inclusive semileptonic B s 0 $$ {B}_s^0 $$ meson decays at the LHC via a sum-of-exclusive modes technique: possibilities and prospects

Journal of High Energy Physics
We propose an approach for measuring the moments of the hadronic invariant mass distribution in semileptonic B s 0 $$ {B}_s^0 $$ meson decays using a sum-of-exclusive technique. Using the present and foreseen knowledge about exclusive semileptonic B s 0 $
M. De Cian, N. Feliks, M. Rotondo, K. Keri Vos   +3 more
doaj   +1 more source

Overview of recent LHCb results

EPJ Web of Conferences, 2018
A selection of the most recent and relevant measurements by the LHCb experiment is presented. It includes the determination of the CKM angle γ, obtained from a combination of a number of measurements of B meson decays, the measurement of the D0 - D0 ...
Vecchi Stefania
doaj   +1 more source