Publications by authors named "P Alvarez Cartelle"

3 Publications

  • Page 1 of 1

Angular Analysis of the B^{+}→K^{*+}μ^{+}μ^{-} Decay.

Phys Rev Lett 2021 Apr;126(16):161802

Laboratoire Leprince-ringuet (llr), Palaiseau, France.

We present an angular analysis of the B^{+}→K^{*+}(→K_{S}^{0}π^{+})μ^{+}μ^{-} decay using 9  fb^{-1} of pp collision data collected with the LHCb experiment. For the first time, the full set of CP-averaged angular observables is measured in intervals of the dimuon invariant mass squared. Local deviations from standard model predictions are observed, similar to those in previous LHCb analyses of the isospin-partner B^{0}→K^{*0}μ^{+}μ^{-} decay. The global tension is dependent on which effective couplings are considered and on the choice of theory nuisance parameters.
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http://dx.doi.org/10.1103/PhysRevLett.126.161802DOI Listing
April 2021

Search for Higgs-like bosons decaying into long-lived exotic particles.

Eur Phys J C Part Fields 2016 2;76(12):664. Epub 2016 Dec 2.

Clermont Université, Université Blaise Pascal, CNRS/IN2P3, LPC, Clermont-Ferrand, France.

A search is presented for massive long-lived particles, in the 20-60 [Formula: see text] mass range with lifetimes between 5 and 100 [Formula: see text]. The dataset used corresponds to 0.62[Formula: see text] of proton-proton collision data collected by the LHCb detector at [Formula: see text]. The particles are assumed to be pair-produced by the decay of a Higgs-like boson with mass between 80 and 140 [Formula: see text]. No excess above the background expectation is observed and limits are set on the production cross-section as a function of the long-lived particle mass and lifetime and of the Higgs-like boson mass.
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http://dx.doi.org/10.1140/epjc/s10052-016-4489-7DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC5335594PMC
December 2016

Measurement of the [Formula: see text] meson lifetime using [Formula: see text] decays.

Eur Phys J C Part Fields 2014;74(5):2839. Epub 2014 May 1.

Physikalisches Institut, Ruprecht-Karls-Universität Heidelberg, Heidelberg, Germany.

The lifetime of the [Formula: see text] meson is measured using semileptonic decays having a [Formula: see text] meson and a muon in the final state. The data, corresponding to an integrated luminosity of [Formula: see text], are collected by the LHCb detector in [Formula: see text] collisions at a centre-of-mass energy of 8 TeV. The measured lifetime is [Formula: see text]where the first uncertainty is statistical and the second is systematic.
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http://dx.doi.org/10.1140/epjc/s10052-014-2839-xDOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC4370795PMC
May 2014