Zobrazeno 1 - 10
of 795
pro vyhledávání: '"Tarantino, C"'
Autor:
Betti, F., Bona, M., Ciuchini, M., Derkach, D., Di Palma, R., Kagan, A. L., Lubicz, V., Martinelli, G., Pierini, M., Silvestrini, L., Tarantino, C., Vagnoni, V.
We present an updated global analysis of beauty decays sensitive to the angle $\gamma$ of the Cabibbo-Kobayashi-Maskawa matrix and of $D$-meson mixing data in the framework of approximate universality for charm mixing. We extract the fundamental theo
Externí odkaz:
http://arxiv.org/abs/2409.06449
We present the calculation of the short-distance power corrections to the CP-violation parameter $\varepsilon_K$ coming from dimension-8 operators in the $\Delta S=2$ effective Hamiltonian. A first estimate of this contribution, obtained for large-$N
Externí odkaz:
http://arxiv.org/abs/2111.05153
Autor:
Alexandrou, C., Bacchio, S., Bergner, G., Constantinou, M., Di Carlo, M., Dimopoulos, P., Finkenrath, J., Fiorenza, E., Frezzotti, R., Garofalo, M., Hadjiyiannakou, K., Kostrzewa, B., Koutsou, G., Jansen, K., Lubicz, V., Mangin-Brinet, M., Manigrasso, F., Martinelli, G., Pittler, F., Rossi, G. C., Sanfilippo, F., Simula, S., Tarantino, C., Todaro, A., Urbach, C., Wenger, U.
We present results for the light, strange and charm quark masses using $N_f=2+1+1$ twisted mass fermion ensembles at three values of the lattice spacing, including two ensembles simulated with the physical value of the pion mass. The analysis is done
Externí odkaz:
http://arxiv.org/abs/2110.04588
Splitting schemes are numerical integrators for Hamiltonian problems that may advantageously replace the St\"ormer-Verlet method within Hamiltonian Monte Carlo (HMC) methodology. However, HMC performance is very sensitive to the step size parameter;
Externí odkaz:
http://arxiv.org/abs/2107.02654
Autor:
Alexandrou, C., Bacchio, S., Bergner, G., Constantinou, M., Di Carlo, M., Dimopoulos, P., Finkenrath, J., Fiorenza, E., Frezzotti, R., Garofalo, M., Hadjiyiannakou, K., Kostrzewa, B., Koutsou, G., Jansen, K., Lubicz, V., Mangin-Brinet, M., Manigrasso, F., Martinelli, G., Papadiofantous, E., Pittler, F., Rossi, G. C., Sanfilippo, F., Simula, S., Tarantino, C., Todaro, A., Urbach, C., Wenger, U.
We present a calculation of the up, down, strange and charm quark masses performed within the lattice QCD framework. We use the twisted mass fermion action and carry out simulations that include in the sea two light mass-degenerate quarks, as well as
Externí odkaz:
http://arxiv.org/abs/2104.13408
Publikováno v:
Phys. Rev. D 98, 014516 (2018)
We present the first lattice Nf=2+1+1 determination of the tensor form factor $f_T^{D \pi(K)}(q^2)$ corresponding to the semileptonic and rare $D \to \pi(K)$ decays as a function of the squared 4-momentum transfer $q^2$. Together with our recent dete
Externí odkaz:
http://arxiv.org/abs/1803.04807
Autor:
Giusti, D., Lubicz, V., Martinelli, G., Sachrajda, C. T., Sanfilippo, F., Simula, S., Tantalo, N., Tarantino, C.
Publikováno v:
Phys. Rev. Lett. 120, 072001 (2018)
The leading-order electromagnetic and strong isospin-breaking corrections to the ratio of $K_{\mu 2}$ and $\pi_{\mu 2}$ decay rates are evaluated for the first time on the lattice, following a method recently proposed. The lattice results are obtaine
Externí odkaz:
http://arxiv.org/abs/1711.06537
Autor:
Giusti, D., Lubicz, V., Martinelli, G., Sanfilippo, F., Simula, S., Tantalo, N., Tarantino, C.
We present a study of the isospin-breaking (IB) corrections to pseudoscalar (PS) meson masses using the gauge configurations produced by the ETM Collaboration with $N_f=2+1+1$ dynamical quarks at three lattice spacings varying from 0.089 to 0.062 fm.
Externí odkaz:
http://arxiv.org/abs/1710.06633
Publikováno v:
Phys. Rev. D 96, 054514 (2017), Phys. Rev. D 99, 099902(E) (2019), Phys. Rev. D100, 079901(E) (2019)
We present a lattice determination of the vector and scalar form factors of the $D \to \pi(K) \ell \nu$ semileptonic decays, which are relevant for the extraction of the CKM matrix elements $|V_{cd}|$ and $|V_{cs}|$ from experimental data. Our analys
Externí odkaz:
http://arxiv.org/abs/1706.03017
Autor:
Giusti, D., Lubicz, V., Martinelli, G., Sanfilippo, F., Simula, S., Tantalo, N., Tarantino, C.
Publikováno v:
Phys. Rev. D 95, 114504 (2017)
We present a lattice computation of the isospin-breaking corrections to pseudoscalar meson masses using the gauge configurations produced by the European Twisted Mass collaboration with $N_f = 2 + 1 + 1$ dynamical quarks at three values of the lattic
Externí odkaz:
http://arxiv.org/abs/1704.06561