Zobrazeno 1 - 10
of 442
pro vyhledávání: '"Bottom Quarks"'
Publikováno v:
Journal of High Energy Physics, Vol 2024, Iss 10, Pp 1-24 (2024)
Abstract 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. There seems that there is currently no ev
Externí odkaz:
https://doaj.org/article/498c3aca115745f58df57b4eaeada2b2
Publikováno v:
Journal of High Energy Physics, Vol 2024, Iss 10, Pp 1-36 (2024)
Abstract We compute next-to-next-to-leading order QCD corrections to the partonic processes b → c u ¯ d $$ c\overline{u}d $$ and b → c c ¯ s $$ c\overline{c}s $$ , which constitute the dominant decay channels in standard model predictions for B
Externí odkaz:
https://doaj.org/article/70021e1d1c604d4eb7e94698d3bd8a34
Publikováno v:
Journal of High Energy Physics, Vol 2024, Iss 10, Pp 1-64 (2024)
Abstract We investigate the possibility of disentangling different new physics contributions to the rare meson decays and through kinematic distributions in the missing energy . We employ dimension-6 operators within the Low-Energy Effective Field Th
Externí odkaz:
https://doaj.org/article/622e0013f6bc4d22a0eb493ff46e421f
Publikováno v:
Journal of High Energy Physics, Vol 2024, Iss 9, Pp 1-28 (2024)
Abstract The non-observation of baryon number violation suggests that the scale of baryon-number violating interactions at zero temperature is comparable to the GUT scale. However, the pertinent measurements involve hadrons made of the first-generati
Externí odkaz:
https://doaj.org/article/5809e600f1f345f58c30333c8c3e89c8
Publikováno v:
Journal of High Energy Physics, Vol 2024, Iss 9, Pp 1-19 (2024)
Abstract The leptonic decay B s → μ + μ − is both rare and theoretically clean, making it an excellent probe for New Physics searches. Due to its helicity suppression in the Standard Model, this decay is particularly sensitive to new (pseudo)-s
Externí odkaz:
https://doaj.org/article/00ef5dfdbd8845f7a34f4f1d96a540f6
Autor:
Alexei Sibidanov, Thomas E. Browder, Shawn Dubey, Shahab Kohani, Rusa Mandal, Saurabh Sandilya, Rahul Sinha, Sven E. Vahsen
Publikováno v:
Journal of High Energy Physics, Vol 2024, Iss 8, Pp 1-35 (2024)
Abstract Within the widely used EvtGen framework, we have added a new event generator model for B → K * ℓ + ℓ − with improved standard model (SM) decay amplitudes and possible BSM physics contributions, which are implemented in the operator p
Externí odkaz:
https://doaj.org/article/02ede5a30ae84f70bbcd0fd711395eee
Publikováno v:
Journal of High Energy Physics, Vol 2024, Iss 8, Pp 1-39 (2024)
Abstract We study the penguin-mediated B ¯ d s → K ¯ ∗ 0 K ∗ 0 ϕ $$ {\overline{B}}_{d(s)}\to {\overline{K}}^{\ast 0}\left({K}^{\ast 0}\right)\phi $$ transitions, proposing a new optimised observable L K*ϕ from the ratio of longitudinal bran
Externí odkaz:
https://doaj.org/article/60bd64eeb3854845abd378d9c7c988a8
Publikováno v:
Journal of High Energy Physics, Vol 2024, Iss 8, Pp 1-31 (2024)
Abstract We provide details to several technical aspects which are important for the calculation of next-to-next-to-leading order corrections to the mixing of neutral B mesons. This includes the computation of the master integrals for finite charm an
Externí odkaz:
https://doaj.org/article/26c55ea64f8d4aa086de57aa82872b2f
Publikováno v:
Journal of High Energy Physics, Vol 2024, Iss 7, Pp 1-56 (2024)
Abstract We study the effects of anomalous thresholds on the non-local form factors describing the hadronization of the light-quark contribution to B → (P, V)γ * transitions. Starting from a comprehensive discussion of anomalous thresholds in the
Externí odkaz:
https://doaj.org/article/a50842b23e0b4e14a586598be6765f9b
Publikováno v:
Journal of High Energy Physics, Vol 2024, Iss 7, Pp 1-26 (2024)
Abstract X-space schemes are gauge-invariant, regulator-independent renormalization schemes that are defined by requiring position-space correlation functions of gauge-invariant operators to be equal to their noninteracting values at particular kinem
Externí odkaz:
https://doaj.org/article/9f65e7637c384482861d5377c65fca4e