Cristina Lopez Iribarnegaray

Branching fraction measurements of $\eta$ and $\eta^\prime(958)$ anomalous decays

Roel Aaij, Ahmed Sameh Wagih Abdelmotteleb, Carlos Abellan Beteta, Fernando Jesus Abudinén et autres

Branching fractions of $\eta$ and $\eta'(958)$ anomalous decays are measured using $pp$ collision data at a center-of-mass energy of $\sqrt{s}=13\,\text{TeV}$ collected by the LHCb experiment and corresponding to an integrated luminosity of $5.4\,\text{fb}^{-1}$. The measured values and upper limits are \begin{align*} \mathcal{B}(\eta\to\mu^+\mu^-) …

Stringent limits on $C\!PT$- and Lorentz-invariance violation from $B_s^0$ meson decays

Roel Aaij, Mohammed Abdelfatah, Ahmed Sameh Wagih Abdelmotteleb, Carlos Abellan Beteta et autres

Tests of fundamental symmetries, such as $CPT$ and Lorentz invariance, provide sensitive probes of physics beyond the standard quantum-field-theory framework. Possible violations of these symmetries are investigated through interference effects in decays of $B_s^0$ mesons to $D_s^-\pi^{+}$ states. The analysis uses proton-proton …

Measurement of the local and nonlocal amplitudes in B+ → K+μ+μ− decays

Roel Aaij, Ahmed Sameh Wagih Abdelmotteleb, Carlos Abellan Beteta, Fernando Jesus Abudinén et autres

A bstract This paper presents a thorough study of the local and nonlocal amplitudes in B + → K + μ + μ − transitions through an amplitude analysis of the dimuon mass spectrum of the decay. The analysis is based on …

nl, gb, ch, us, es, se, fr, it, de, lt, br, cn, cz, pl, hu, ua (code pays fourni par la source)

First measurement of the decay-time-integrated $C\!P$ asymmetry in $B_s^0 \to D_s^- π^+$ decays

Roel Aaij, Mohammed Abdelfatah, Ahmed Sameh Wagih Abdelmotteleb, Carlos Abellan Beteta et autres

International audience

fr (code pays fourni par la source)