The Probe for LUminosity MEasurement (PLUME) detector is a dedicated luminosity monitor at the LHCb interaction point. It is a hodoscope comprising 48 Hamamatsu R760 photomultiplier tubes that detect Cherenkov light produced by particles travelling in the direction opposite to the LHCb spectrometer acceptance. PLUME pr...
F. Alessio, S. Barsuk, C. Beigbeder et al.· Journal of Instrumentation· 0 citations
Energy-energy correlators probe perturbative and nonperturbative QCD regimes of jet formation through momentum-weighted angular correlations between hadrons. First measurements in light-quark-enriched jets are presented for inclusive, like-sign, and opposite-sign charged-hadron pairs, using proton-proton collisions at...
LHCb Collaboration R. Aaij, M. Abdelfatah, A. Abdelmotteleb et al.· 0 citations
This Letter presents the first measurement of the $B^{0} \to K^{+}\pi^{-}\mu^{+}\mu^{-}$ differential branching fraction in the region of the dihadron $K^+\pi^-$ mass, $m_{K\pi}$, $1000<m_{K\pi}<1835\,\text{MeV}/c^{2}$. This decay mode is mediated by the quark-level transition $b \to s\ell^{+}\ell^{-}$, for which the m...
LHCb Collaboration R. Aaij, M. Abdelfatah, A. Abdelmotteleb et al.· 0 citations
A search for the doubly charmed baryon $\varOmega^+_{cc}$ in the $\varOmega^0_c\pi^+$ decay channel is performed using proton-proton collision data corresponding to an integrated luminosity of $6.3\text{fb}^{-1}$, collected with the upgraded LHCb detector in 2024 at a center-of-mass energy of 13.6$\text{TeV}$. A peakin...
LHCb Collaboration R. Aaij, M. Abdelfatah, A. Abdelmotteleb et al.· 0 citations
A search for the Cabibbo-suppressed decay $\Xi_c^0 \to pK^-$ is performed using $pp$ collision data corresponding to an integrated luminosity of $5.4\,\mathrm{fb}^{-1}$, collected by the LHCb experiment at a centre-of-mass energy of $13\,\mathrm{TeV}$. The decay is observed for the first time and its branching fraction...
LHCb Collaboration R. Aaij, M. Abdelfatah, A. Abdelmotteleb et al.· 0 citations
Tests of fundamental symmetries, such as $C\!PT$ 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 p...
LHCb Collaboration R. Aaij, M. Abdelfatah, A. Abdelmotteleb et al.· 0 citations
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