0000000000516682

AUTHOR

A. Manca

showing 2 related works from this author

Measurement of the mass and lifetime of the Ω(−)(b) baryon

2016

A proton-proton collision data sample, corresponding to an integrated luminosity of 3 fb$^{-1}$ collected by LHCb at $\sqrt{s}=7$ and 8 TeV, is used to reconstruct $63\pm9$ $\Omega_b^-\to\Omega_c^0\pi^-$, $\Omega_c^0\to pK^-K^-\pi^+$ decays. Using the $\Xi_b^-\to\Xi_c^0\pi^-$, $\Xi_c^0\to pK^-K^-\pi^+$ decay mode for calibration, the lifetime ratio and absolute lifetime of the $\Omega_b^-$ baryon are measured to be \begin{align*} \frac{\tau_{\Omega_b^-}}{\tau_{\Xi_b^-}} &= 1.11\pm0.16\pm0.03, \\ \tau_{\Omega_b^-} &= 1.78\pm0.26\pm0.05\pm0.06~{\rm ps}, \end{align*} where the uncertainties are statistical, systematic and from the calibration mode (for $\tau_{\Omega_b^-}$ only). A measurement …

Physics and Astronomy (miscellaneous)Analytical chemistryQuarkonium01 natural sciencesOmegaproton-proton scatteringHigh Energy Physics - ExperimentLuminosityPhysics Particles & FieldsHEAVY-QUARK EXPANSIONHadron-Hadron scattering (experiments)[PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex]BaryonsBarionsPhysicsPhysicsBEAUTYMassa (Física)Nuclear & Particles PhysicsPhysical SciencesINCLUSIVE WEAK DECAYSLHCMass (Physics)Propietats de la matèriaParticle Physics - ExperimentProperties of matterNuclear and High Energy PhysicsHadronsAstronomy & AstrophysicsParticle and resonance productionNONuclear physicsRATIO0202 Atomic Molecular Nuclear Particle And Plasma Physics0103 physical sciencesPi010306 general physics0206 Quantum PhysicsINCLUSIVE WEAK DECAYS; HEAVY-QUARK EXPANSION; DISCARDING 1/N(C); RATIO; BEAUTY; RULEScience & Technology010308 nuclear & particles physicsQCDHEPDISCARDING 1/N(C)BaryonLHCb0201 Astronomical And Space SciencesHadron-Hadron scattering (experiments) Particle and resonance production proton-proton scattering QCD QuarkoniumHadronic decays of baryonBottom baryons (|B|>0)High Energy Physics::ExperimentCharmed mesons (|C|>0 B=0)RULE
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Quantum gravity with THESEUS

2021

AbstractIn this paper we explore the possibility to search for a dispersion law for light propagation in vacuo with a sample of Gamma-Ray Bursts detected by the THESEUS satellite. Within Quantum Gravity theories, different models for space-time quantization predict relative discrepancies of the speed of photons w.r.t. the speed of light that (in a series expansion) depend on a given power of the ratio of the photon energy to the Planck energy. This ratio is as small as 10− 23 for photons in the soft γ −ray band (100 keV). The dominant effect is determined by the first significant term of this expansion. If the first order in this expansion is relevant, these theories imply a Lorentz Invaria…

CubeSatsSettore FIS/05 - Astronomia E AstrofisicaAll-sky monitorSpace and Planetary ScienceAstrophysics::High Energy Astrophysical PhenomenaX-raysQuantum gravityGravitational wave counterpartsAstronomy and AstrophysicsGamma-ray burstsNano-satellitesTemporal triangulationExperimental Astronomy
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