Zobrazeno 1 - 10
of 85
pro vyhledávání: '"K. Keri Vos"'
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
Publikováno v:
Journal of High Energy Physics, Vol 2024, Iss 6, Pp 1-21 (2024)
Abstract 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 semile
Externí odkaz:
https://doaj.org/article/2c9e13001c36498f839aa2246255e733
Publikováno v:
Journal of High Energy Physics, Vol 2024, Iss 2, Pp 1-32 (2024)
Abstract 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 |. We calculate the terms of 1 / m b 5
Externí odkaz:
https://doaj.org/article/1fae35d35b0641478adea26343a9fdbb
Publikováno v:
Journal of High Energy Physics, Vol 2023, Iss 11, Pp 1-23 (2023)
Abstract We update the full set of B ¯ $$ \overline{B} $$ s → K form factors using light-cone sum rules with an on-shell kaon. Our approach determines the relevant sum rule parameters — the duality thresholds — from a Bayesian fit for the firs
Externí odkaz:
https://doaj.org/article/e932a51413884c178733aa609c02dfbc
Publikováno v:
Journal of High Energy Physics, Vol 2023, Iss 9, Pp 1-54 (2023)
Abstract Light-cone distribution amplitudes (LCDAs) frequently arise in factorization theorems involving light and heavy mesons. The QCD LCDA for heavy mesons includes short-distance physics at energy scales of the heavy-quark mass. In this paper we
Externí odkaz:
https://doaj.org/article/7b8f272c30694e7597b73308546d3b12
Publikováno v:
Journal of High Energy Physics, Vol 2023, Iss 7, Pp 1-20 (2023)
Abstract The treatment of the quark mass plays an important role when it comes to increasing the precision of the predictions of the heavy quark expansion for inclusive heavy hadron decays. Various short-distance mass schemes have been invented to mi
Externí odkaz:
https://doaj.org/article/0a94740835f848fc81355f1a0d4266f3
Publikováno v:
Journal of High Energy Physics, Vol 2023, Iss 6, Pp 1-17 (2023)
Abstract Intriguing results for tests of the universality of electrons and muons through measurements of rates of B → Kℓ + ℓ − and similar decays have been in the spotlight for years. The LHCb collaboration has recently reported new results w
Externí odkaz:
https://doaj.org/article/ba75a126dbc84e62bcd01e3df9ec1805
Publikováno v:
Journal of High Energy Physics, Vol 2023, Iss 6, Pp 1-46 (2023)
Abstract We derive a set of light-cone sum rules relating the S-wave B → Kπ hadronic form factors to the B-meson light-cone distribution amplitudes (LCDAs), taking into account the complete set of LCDAs up to and including twist four. These result
Externí odkaz:
https://doaj.org/article/d77e4b8ca5c14299811c294d2b407953
Publikováno v:
Journal of High Energy Physics, Vol 2023, Iss 3, Pp 1-31 (2023)
Abstract The B → Kℓ + ℓ − system is particularly interesting to explore physics beyond the Standard Model. Such effects could provide new sources of CP violation, thereby giving rise to Wilson coefficients which could not only be real, as ass
Externí odkaz:
https://doaj.org/article/44112563f0784084b960c75f626a3f78
Publikováno v:
Journal of High Energy Physics, Vol 2023, Iss 2, Pp 1-20 (2023)
Abstract The LHCb collaboration has recently reported the first observation of CP violation in the penguin-dominated B s 0 $$ {B}_s^0 $$ → K − K + decay and further new measurements, indicating differences between the direct CP asymmetries of bot
Externí odkaz:
https://doaj.org/article/2103765f4f0b49e39897ef1863eed8f0