L. Mcconnell

Search for $D^{*}(2007)^0\toμ^+μ^-$ in $B^-\toπ^-μ^+μ^-$ decays

LHCb collaboration, R. Aaij, A. S. W. Abdelmotteleb, C. Abellán Beteta et autres

The very rare $D^{*}(2007)^0\toμ^+μ^-$ decay is searched for by analysing $B^-\toπ^-μ^+μ^-$ decays. The analysis uses a sample of beauty mesons produced in proton-proton collisions collected with the LHCb detector between 2011 and 2018, corresponding to an integrated luminosity of 9 fb$^{-1}$. The …

de (code pays fourni par la source)

Tests of Lepton Universality Using B0→KS0ℓ+ℓ− and B+→K*+ℓ+ℓ− Decays

R. Aaij, Ahmed Sameh Wagih Abdelmotteleb, Carlos Abellán Beteta, F. Abudinén et autres

Tests of lepton universality in B^{0}→K_{S}^{0}ℓ^{+}ℓ^{-} and B^{+}→K^{*+}ℓ^{+}ℓ^{-} decays where ℓ is either an electron or a muon are presented. The differential branching fractions of B^{0}→K_{S}^{0}e^{+}e^{-} and B^{+}→K^{*+}e^{+}e^{-} decays are measured in intervals of the dilepton invariant mass squared. The measurements are …

nl, gb, ch, es, fr, us, it, de, ru, br, pl, cn (code pays fourni par la source)

Search for the doubly heavy baryons and decaying to and *

R. Aaij, Carlos Abellán Beteta, T. Ackernley, B. Adeva et autres

Abstract The first search for the doubly heavy baryon and a search for the baryon are performed using collision data collected via the experiment from 2016 to 2018 at a centre-of-mass energy of , corresponding to an integrated luminosity of 5.2 . …

nl, ch, gb, es, fr, us, it, de, ru, br, pl, cn (code pays fourni par la source)

Search for C P violation and observation of P violation in Λ b 0 → p π − π + π − decays

R. Aaij, Carlos Abellán Beteta, T. Ackernley, B. Adeva et autres

A search for $CP$ violation in the ${\mathrm{\ensuremath{\Lambda}}}_{b}^{0}\ensuremath{\rightarrow}p{\ensuremath{\pi}}^{\ensuremath{-}}{\ensuremath{\pi}}^{+}{\ensuremath{\pi}}^{\ensuremath{-}}$ decay is performed using LHCb data corresponding to an integrated luminosity of $6.6\text{ }\text{ }{\mathrm{fb}}^{\ensuremath{-}1}$ collected in $pp$ collisions at center-of-mass energies of 7, 8 and 13 TeV. The analysis uses both triple product …

nl, ch, gb, es, fr, us, it, de, ru, br, pl, cn (code pays fourni par la source)

Observation of New Ξ c 0 Baryons Decaying to Λ c + K −

R. Aaij, C. Abellán Beteta, T. Ackernley, B. Adeva et autres

The Λ_{c}^{+}K^{-} mass spectrum is studied with a data sample of pp collisions at a center-of-mass energy of 13 TeV corresponding to an integrated luminosity of 5.6 fb^{-1} collected by the LHCb experiment. Three Ξ_{c}^{0} states are observed with a large significance …

nl, ch, gb, es, fr, us, it, de, ru, br, pl (code pays fourni par la source)

Determination of quantum numbers for several excited charmed mesons observed in B−→D*+π−π− decays

R. Aaij, C. Abellán Beteta, T. Ackernley, B. Adeva et autres

A four-body amplitude analysis of the ${B}^{\ensuremath{-}}\ensuremath{\rightarrow}{D}^{*+}{\ensuremath{\pi}}^{\ensuremath{-}}{\ensuremath{\pi}}^{\ensuremath{-}}$ decay is performed, where fractions and relative phases of the various resonances contributing to the decay are measured. Several quasi-model-independent analyses are performed aimed at searching for the presence of new states and establishing the …

nl, ch, gb, es, fr, us, it, de, ru, br, pl, cn (code pays fourni par la source)

Observation of the semileptonic decay $B^{+}\to p\overline{p}μ^{+}ν_μ$

R. Aaij, C. Abellán Beteta, T. Ackernley, B. Adeva et autres