Zobrazeno 1 - 10
of 1 129
pro vyhledávání: '"Meril, A."'
We discuss a novel and simple parametrisation of the pion vector form factor that transparently connects spacelike and timelike regions of the momentum transfer $q^2$. Our parametrisation employs the framework of conformal mapping and respects the kn
Externí odkaz:
http://arxiv.org/abs/2410.13764
We study the available data on exclusive leptonic and semileptonic $c\to s\ell^+\nu$ decays within the Standard Model and beyond. Our analysis accounts for theory correlations between the relevant hadronic matrix elements through application of dispe
Externí odkaz:
http://arxiv.org/abs/2407.06145
Autor:
Gärtner, Lorenz, Hartmann, Nikolai, Heinrich, Lukas, Horstmann, Malin, Kuhr, Thomas, Reboud, Méril, Stefkova, Slavomira, van Dyk, Danny
Experimental High Energy Physics has entered an era of precision measurements. However, measurements of many of the accessible processes assume that the final states' underlying kinematic distribution is the same as the Standard Model prediction. Thi
Externí odkaz:
http://arxiv.org/abs/2402.08417
We study the inclusive and exclusive cross sections of $e^+e^-\to \text{hadrons}$ for center-of-mass energies between 3.70 GeV and 3.83 GeV to infer the mass, width, and couplings of the $\psi(3770)$ resonance. By using a coupled-channel K-matrix app
Externí odkaz:
http://arxiv.org/abs/2312.00619
Autor:
Marshall, Alexander Mclean, McCann, Michael Andrew, Patel, Mitesh, Petridis, Konstantinos A., Reboud, Méril, van Dyk, Danny
Publikováno v:
Phys. Rev. D 109, 116013 (2024)
We present a method that maximises the experimental sensitivity to new physics contributions in $B^\pm\to\pi^\pm\mu^+\mu^-$ decays. This method relies on performing an unbinned maximum likelihood fit to both the measured dimuon $q^2$ distribution of
Externí odkaz:
http://arxiv.org/abs/2310.06734
Publikováno v:
JHEP 01 (2024) 144
We investigate the physics reach and potential for the study of various decays involving a $b \to s \nu \bar{\nu}$ transition at the Future Circular Collider running electron-positron collisions at the $Z$-pole (FCC-ee). Signal and background candida
Externí odkaz:
http://arxiv.org/abs/2309.11353
Studying potential BSM effects at the precision frontier requires accurate transfer of information from low-energy measurements to high-energy BSM models. We propose to use normalising flows to construct likelihood functions that achieve this transfe
Externí odkaz:
http://arxiv.org/abs/2309.10365
Autor:
Aebischer, Jason, Fael, Matteo, Fuentes-Martín, Javier, Thomsen, Anders Eller, Virto, Javier, Allwicher, Lukas, Bakshi, Supratim Das, Bélusca-Maïto, Hermès, de Blas, Jorge, Chala, Mikael, Criado, Juan Carlos, Dedes, Athanasios, Fonseca, Renato M., Goncalves, Angelica, Ilakovac, Amon, König, Matthias, Patra, Sunando Kumar, Kühler, Paul, Mađor-Božinović, Marija, Misiak, Mikołaj, Miralles, Víctor, Nałȩcz, Ignacy, Reboud, Méril, Reina, Laura, Rosiek, Janusz, Ryczkowski, Michal, Santiago, José, Silvestrini, Luca, Stangl, Peter, Stöckinger, Dominik, Stoffer, Peter, Vicente, Avelino, Weißwange, Matthias
Publikováno v:
Eur. Phys. J. C 84, 170 (2024)
In recent years, theoretical and phenomenological studies with effective field theories have become a trending and prolific line of research in the field of high-energy physics. In order to discuss present and future prospects concerning automated to
Externí odkaz:
http://arxiv.org/abs/2307.08745
Publikováno v:
JHEP 12 (2023) 153
We propose a stronger formulation of the dispersive (or unitarity) bounds \`a la Boyd-Grinstein-Lebed (BGL), which are commonly applied in analyses of the hadronic form factors for $B$ decays. In our approach, the existing bounds are split into sever
Externí odkaz:
http://arxiv.org/abs/2305.06301
Publikováno v:
JHEP 08 (2023) 063
We fit the available data on exclusive semileptonic $b\to u\ell^-\bar\nu$ decays within the Standard Model and in the Weak Effective Theory. Assuming Standard Model dynamics, we find $|V_{ub}| = 3.59^{+0.13}_{-0.12} \times 10^{-3}$. Lifting this assu
Externí odkaz:
http://arxiv.org/abs/2302.05268