Accès ouvert
2025
article
OpenAlex
Jason Aebischer, Atakan Tugberk Akmete, R. Aliberti, Wolfgang Altmannshofer et autres
Abstract The kaon physics programme, long heralded as a cutting-edge frontier by the European Strategy for Particle Physics, continues to stand at the intersection of discovery and innovation in high-energy physics (HEP). With its unparalleled capacity to explore new physics at the …
ch, de, it, fr, se, be, us, gb, jp, cn, nl, cz, md, in, sk, ru, at, es
(code pays fourni par la source)
Accès ouvert
2025
article
OpenAlex
Damir Bečirević, Roberto Di Palma, R. Frezzotti, G. Gagliardi et autres
We present the results of our lattice QCD computation of the electric ( E 1 ) and magnetic ( M 2 ) form factors relevant to the χ c 1 → J / ψ γ decay by using the gauge field configurations …
fr, it
(code pays fourni par la source)
Accès ouvert
2025
article
OpenAlex
Damir Bečirević, Roberto Di Palma, R. Frezzotti, G. Gagliardi et autres
We present the results of our lattice QCD computation of the hadronic matrix elements relevant to the h c → η c γ and h b → η b γ decays by using the gauge configurations produced by the Extended Twisted Mass …
fr, it
(code pays fourni par la source)
Accès ouvert
2025
preprint
OpenAlex
Damir Bečirević, Roberto Di Palma, R. Frezzotti, G. Gagliardi et autres
We present the results of our lattice QCD computation of the hadronic matrix elements relevant to the $h_{c}\to η_{c}γ$ and $h_{b}\to η_{b}γ$ decays by using the gauge configurations produced by the Extended Twisted Mass Collaboration with $N_{f}=2+1+1$ dynamical Wilson-Clover twisted mass fermions …
fr
(code pays fourni par la source)
Accès ouvert
2025
article
OpenAlex
Damir Bečirević, Svjetlana Fajfer, Nejc Košnik, Lovre Pavičić
We explain the difference between the measured decay widths of b → c τ ν processes and of B → K ν ν ¯ and their values predicted in the Standard Model by introducing the right-handed interactions both to quarks and to …
fr, si
(code pays fourni par la source)
Accès ouvert
2024
conference-paper
OpenAlex
Svjetlana Fajfer, Damir Bečirević, Nejc Košnik, Lovre Pavičić
We reinvestigate contributions of scalar leptoquarks in $R_{D^{(\ast)}}$ anomalies and use constraints from the branching fractions of $B\to K^{(\ast)} \nu \bar \nu$ decays. Then, we update the constraints on parameter space and find which scalar leptoquarks remain viable and consistent with low- …
si, fr
(code pays fourni par la source)
Accès ouvert
2024
preprint
OpenAlex
Damir Bečirević, Svjetlana Fajfer, Nejc Košnik, Lovre Pavičić
We explain the difference between the measured decay widths of $b \to c τν$ processes and of $B\to Kν\barν$ and their values predicted in the Standard Model by introducing the right-handed interactions both to quarks and to leptons. At low energy scales, …
fr
(code pays fourni par la source)
Accès ouvert
2024
article
OpenAlex
Damir Bečirević, F. Jaffredo, João Paulo Pinheiro, Olcyr Sumensari
We discuss the exclusive lepton flavor violating (LFV) decays modes based on b → d ℓ i ℓ j and b → s ℓ i ℓ j by considering the ground state mesons and baryons. After spelling out the expressions for such …
fr, it, es
(code pays fourni par la source)
Accès ouvert
2024
article
OpenAlex
Damir Bečirević, Svjetlana Fajfer, Nejc Košnik, Lovre Pavičić
Motivated by the long-standing discrepancy in lepton flavor universality ratios R D and R D * we assess the status of scalar leptoquark states R 2 , R ˜ 2 and S 1 which can in principle provide a desired enhancement of …
fr, si
(code pays fourni par la source)
Accès ouvert
2024
article
OpenAlex
Simone Bacchio, Damir Bečirević, G. Gagliardi, Francesco Sanfilippo
The normalization of the leading-twist photon distribution amplitude (DA), f γ ⊥ , is an important ingredient in the study of exclusive processes involving the photon emission by means of QCD sum-rules. In this paper we determine the up-, down- and strange-quark …
cy, fr, it
(code pays fourni par la source)
Accès ouvert
2024
preprint
OpenAlex
Damir Bečirević, Florentin Jaffredo, João Paulo Pinheiro, Olcyr Sumensari
We discuss the exclusive lepton flavor violating (LFV) decays modes based on $b\to d\ell_i\ell_j$ and $b\to s\ell_i\ell_j$ by considering the ground state mesons and baryons. After spelling out the expressions for such decay rates in a low energy effective theory which includes …
fr
(code pays fourni par la source)
Accès ouvert
2023
article
OpenAlex
Lukas Allwicher, Damir Bečirević, G. Piazza, S. Rosauro-Alcaraz et autres
Recently, Belle II reported on the first measurement of B(B±→K±νν¯) which appears to be almost 3σ larger than predicted in the Standard Model. We point out the important correlation with B(B→K⁎νν¯) so that the measurement of that decay mode could help restrain …
ch, fr
(code pays fourni par la source)