Results 31 to 40 of about 107,791 (340)

Dispersive analysis of B → K (*) and B s → ϕ form factors

Journal of High Energy Physics, 2023
We propose a stronger formulation of the dispersive (or unitarity) bounds à la Boyd-Grinstein-Lebed (BGL), which are commonly applied in analyses of the hadronic form factors for B decays.
Nico Gubernari, Méril Reboud, Danny van Dyk, Javier Virto   +3 more
doaj   +1 more source

On the impact of meson mixing on B s → ϕee angular observables at low q 2

Journal of High Energy Physics, 2023
Decays based on the b → sγ transition are expected to yield left-handed photons in the Standard Model, but could be particularly sensitive to New Physics contributions modifying the short-distance Wilson coefficients C $$ \mathcal{C} $$ 7 and C ...
Sébastien Descotes-Genon, Ioannis Plakias, Olcyr Sumensari   +2 more
doaj   +1 more source

Next-to-leading Order Calculations of the Radiative and Semileptonic Rare B Decays in the Standard Model and Comparison with Data [PDF]

, 2002
We review some selected rare B decays calculated in next-to-leading order accuracy in the Standard Model (SM). These include the radiative decays $B \to (X_s,K^*,\rho)\gamma$ and the semileptonic decays $B \to (X_s,K,K^*) \ell^+ \ell^-$, for which new ...
A. Ali, Abe, Alam, Ali, Ali, Ali, Ali, Ali, Ali, Ali, Ali, Ali, Ammar, Asatrian, Ball, Barate, Beneke, Beneke, Beneke, Bobeth, Bosch, Buchalla, Buras, Charles, Chen, Chetyrkin, Chetyrkin, Del Debbio, Falk, Gambino, Greub, Greub, Greub, Grinstein, Hagiwara, Jezabek, Kagan, Khodjamirian, Melikhov, Misiak, Narison, Soares   +41 more
core   +3 more sources

Rare $b$-hadron decays

Comptes Rendus. Physique, 2020
Rare $b$-hadron decays provide a rich environment to search for beyond Standard Model physics effects thanks to numerous observables. In the recent years, several tensions with the SM expectations have appeared.
Egede, Ulrik, Serrano, Justine
doaj   +1 more source

FCNC B and K meson decays with light bosonic Dark Matter

Journal of High Energy Physics, 2023
We consider decays of B and K mesons into a pseudo-scalar or vector meson plus missing energy. Within the SM, these modes originate from flavor changing neutral current (FCNC) processes with two neutrinos in the final state. In this paper we consider the
Xiao-Gang He, Xiao-Dong Ma, German Valencia   +2 more
doaj   +1 more source

Rare Charm Decays

, 2005
Rare FCNC decay modes of charmed mesons are reviewed. The standard model predictions, including both short and long distance contributions, are summarized.
Akeroyd, Bajc, Burdman, Burdman, Fajfer, Fajfer, Fajfer, Fajfer, Greub, S. Pakvasa, Tajima   +10 more
core   +2 more sources

More synergies from beauty, top, Z and Drell-Yan measurements in SMEFT

Journal of High Energy Physics, 2023
We perform a global analysis of Beauty, Top, Z and Drell-Yan measurements in the framework of the Standard Model effective theory (SMEFT). We work within the minimal flavor violation (MFV) hypothesis, which relates different sectors and generations ...
Cornelius Grunwald, Gudrun Hiller, Kevin Kröninger, Lara Nollen   +3 more
doaj   +1 more source

Rare decays: theory vs. experiments [PDF]

, 2001
We present an overview of rare K, D and B decays. Particular attention is devoted to those flavour-changing neutral-current processes of K and B mesons that offer the possibility of new significant tests of the Standard Model.
Isidori, Gino
core   +2 more sources

Review of experimental results from SND detector [PDF]

, 2001
The review of experimental results obtained with SND detector at VEPP-2M $e^+e^-$ collider in the energy region $\sqrt[]{s}=0.36$ -- 1.38 GeV is given. The presented results include the following items: studies of the light vector mesons radiative decays,
Achasov, M. N., Aulchenko, V. M., Beloborodov, K. I., Berdyugin, A. V., Bogdanchikov, A. G., Bozhenok, A. V., Bukin, A. D., Bukin, D. A., Burdin, S. V., Dimova, T. V., Drozdetski, A. A., Druzhinin, V. P., Ganushin, D. I., Golubev, V. B., Ivanchenko, V. N., Ivanov, P. M., Korol, A. A., Koshuba, S. V., Nesterenko, I. N., Pakhtusova, E. V., Polunin, A. A., Salnikov, A. A., Serednyakov, S. I., Shary, V. V., Shatunov, Yu. M., Sidorov, V. A., Silagadze, Z. K., Skrinsky, A. N., Skripkin, A. G., Usov, Yu. V., Vasiljev, A. V.   +30 more
core   +2 more sources

Rare kaon decays

Comptes Rendus. Physique, 2020
The article reviews the status of rare K decay physics. The explored area covers a broad program, ranging from precise tests of flavour theory and CP-violation to the searches for explicit violations of the standard model and the study of strong ...
Ceccucci, Augusto, Lazzeroni, Cristina
doaj   +1 more source