Zobrazeno 1 - 10
of 107
pro vyhledávání: '"Passemar, Emilie"'
One of the portals to new physics is a light scalar coupled to the Standard Model (SM) Higgs. In this paper we focus on hadronic decays of such a scalar in the regime where QCD dynamics is nonperturbative, resulting, e.g., in decays to pairs of pions
Externí odkaz:
http://arxiv.org/abs/2407.13587
Autor:
Goudzovski, Evgueni, Passemar, Emilie
The present report of the RF2 Topical Group to Snowmass 2021 describes the physics case for the studies of weak decays of strange and light quarks. Ongoing and proposed precision measurements of kaon, hyperon, pion and $\eta^{(\prime)}$ meson decays
Externí odkaz:
http://arxiv.org/abs/2209.07156
Autor:
Albaladejo, Miguel, Battaglieri, Marco, Bibrzycki, Lukasz, Celentano, Andrea, Danilkin, Igor V., Dawid, Sebastian M., Doring, Michael, Fanelli, Cristiano, Fernandez-Ramirez, Cesar, Gonzalez-Solis, Sergi, Blin, Astrid N. Hiller, Jackura, Andrew W., Mathieu, Vincent, Mikhasenko, Mikhail, Mokeev, Victor I., Passemar, Emilie, Perry, Robert J., Pilloni, Alessandro, Rodas, Arkaitz, Shepherd, Matthew R., Sherrill, Nathaniel, Silva-Castro, Jorge A., Skwarnicki, Tomasz, Szczepaniak, Adam P., Winney, Daniel
We highlight the need for the development of comprehensive amplitude analysis methods to further our understanding of hadron spectroscopy. Reaction amplitudes constrained by first principles of $S$-matrix theory and by QCD phenomenology are needed to
Externí odkaz:
http://arxiv.org/abs/2203.08208
Autor:
JPAC Collaboration, Albaladejo, Miguel, Bibrzycki, Lukasz, Dawid, Sebastian M., Fernandez-Ramirez, Cesar, Gonzalez-Solis, Sergi, Blin, Astrid N. Hiller, Jackura, Andrew W., Mathieu, Vincent, Mikhasenko, Mikhail, Mokeev, Victor I., Passemar, Emilie, Pilloni, Alessandro, Rodas, Arkaitz, Silva-Castro, Jorge A., Smith, Wyatt A., Szczepaniak, Adam P., Winney, Daniel
Publikováno v:
Prog. Part. Nucl. Phys. 127 (2022) 103981
The last two decades have witnessed the discovery of a myriad of new and unexpected hadrons. The future holds more surprises for us, thanks to new-generation experiments. Understanding the signals and determining the properties of the states requires
Externí odkaz:
http://arxiv.org/abs/2112.13436
Publikováno v:
Phys. Rev. D 104, 034019 (2021)
We study the transition widths of $\Upsilon(10753)$ and $\Upsilon(11020)$ into standard bottomonium under the hypothesis that they correspond to the two lowest laying $1^{--}$ hybrid bottomonium states. We employ weakly coupled potential NRQCD an eff
Externí odkaz:
http://arxiv.org/abs/2104.03975
Publikováno v:
Phys. Rept. 945 (2022) 1-105
Decays of the neutral and long-lived $\eta$ and $\eta'$ mesons provide a unique, flavor-conserving laboratory to test low-energy Quantum Chromodynamics and search for new physics beyond the Standard Model. They have drawn world-wide attention in rece
Externí odkaz:
http://arxiv.org/abs/2007.00664
We present in a full analytic form the partial widths for the lepton flavour violating decays $\mu^\pm \to e^\pm e^+ e^-$ and $\tau^\pm \to \ell^\pm \ell'^{+} \ell'^{-}$, with $\ell,\ell'=\mu,e$, mediated by neutrino oscillations in the one-loop diag
Externí odkaz:
http://arxiv.org/abs/1912.09862
We point out that testing the equality of the Cabibbo angle as extracted from $\Gamma(K\rightarrow \pi l\nu)$, the ratio $\Gamma(K\rightarrow l\nu)/\Gamma(\pi\rightarrow l\nu)$ and nuclear $\beta$ decays is not identical to a test of first row unitar
Externí odkaz:
http://arxiv.org/abs/1911.07821
The dispersive analysis of the decay $\eta\to3\pi$ is reviewed and thoroughly updated with the aim of determining the quark mass ratio ~$Q^2=(m_s^2-m_{ud}^2)/(m_d^2-m_u^2)$. With the number of subtractions we are using, the effects generated by the f
Externí odkaz:
http://arxiv.org/abs/1807.11937
We study the hadronic $\eta^{\prime}\to\eta\pi\pi$ decays within the framework of $U(3)_{L}\otimes U(3)_{R}$ Chiral Perturbation Theory including resonance states and the complete one-loop corrections. The amplitude is projected in partial waves and
Externí odkaz:
http://arxiv.org/abs/1807.04313