T. Ovsiannikova
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View article: Precise determination of the $B_s^0 - \overline{B}_s^0$ oscillation frequency
Precise determination of the $B_s^0 - \overline{B}_s^0$ oscillation frequency Open
Mesons comprising a beauty quark and a strange quark can oscillate between particle (B0s) and antiparticle (B0s) flavour eigenstates, with a frequency given by the mass difference between heavy and light mass eigenstates, deltams. Here we …
View article: arXiv : Measurement of the photon polarization in $\Lambda_b \to \Lambda \gamma$ decays
arXiv : Measurement of the photon polarization in $\Lambda_b \to \Lambda \gamma$ decays Open
The photon polarization in $b \to s \gamma$ transitions is measured for the first time in radiative b-baryon decays exploiting the unique spin structure of $\Lambda_b \to \Lambda \gamma$ decays. A data sample corresponding to an integrated…
View article: Measurement of the nuclear modification factor and prompt charged particle production in $p\mathrm{Pb}$ and $pp$ collisions at $\sqrt{s_{\scriptscriptstyle\mathrm{NN}}}=5\,\mathrm{TeV}$
Measurement of the nuclear modification factor and prompt charged particle production in $p\mathrm{Pb}$ and $pp$ collisions at $\sqrt{s_{\scriptscriptstyle\mathrm{NN}}}=5\,\mathrm{TeV}$ Open
The production of prompt charged particles in proton-lead collisions and in proton-proton collisions at the nucleon-nucleon centre-of-mass energy ${\sqrt{s_{\scriptscriptstyle\mathrm{NN}}}=5\,\mathrm{TeV}}$ is studied at LHCb as a function…
View article: Measurement of prompt charged-particle production in $pp$ collisions at $\sqrt{s} = 13\,\mathrm{TeV}$
Measurement of prompt charged-particle production in $pp$ collisions at $\sqrt{s} = 13\,\mathrm{TeV}$ Open
The differential cross-section of prompt inclusive production of long-lived charged particles in proton-proton collisions is measured using a data sample recorded by the LHCb experiment at a centre-of-mass energy of $ \\sqrt{s} $ = 13 TeV.…
View article: Search for the doubly heavy baryons $\\it{\\Xi}_{bc}^{\\rm0}$ and $\\it{\\Omega}_{bc}^{\\rm0}$ decaying to $\\it{\\Lambda_{c}^{+}\\pi^{-}}$ and $\\it{\\Xi_{c}^{+}\\pi^{-}}$
Search for the doubly heavy baryons $\\it{\\Xi}_{bc}^{\\rm0}$ and $\\it{\\Omega}_{bc}^{\\rm0}$ decaying to $\\it{\\Lambda_{c}^{+}\\pi^{-}}$ and $\\it{\\Xi_{c}^{+}\\pi^{-}}$ Open
A search for the doubly heavy baryons $\\it{\\Xi}_{bc}^{\\rm0}$ and $\\it{\\Omega}_{bc}^{\\rm0}$ is performed using $pp$ collision data collected with the LHCb experiment from 2016 to 2018 at a centre-of-mass energy of $13TeV$, correspondi…
View article: Test of lepton universality in beauty-quark decays
Test of lepton universality in beauty-quark decays Open
The Standard Model of particle physics currently provides our best description of fundamental particles and their interactions. The theory predicts that the different charged leptons, the electron, muon and tau, have identical electroweak …
View article: Beauty meson decays to charmonuim-like states at LHCb
Beauty meson decays to charmonuim-like states at LHCb Open
The decays $B^{0}_{s} \to Jψπ^{+}π^{-}K^{+}K^{-}$ are studied using a data set corresponding to an integrated luminosity of 9fb$^{-1}$, collected with the LHCb detector in proton-proton collisions at centre-of-mass energies of 7, 8 and 13 …
View article: Search for time-dependent $CP$ violation in $D^0 \to K^+ K^-$ and $D^0 \to \pi^+ \pi^-$ decays
Search for time-dependent $CP$ violation in $D^0 \to K^+ K^-$ and $D^0 \to \pi^+ \pi^-$ decays Open
A search for time-dependent violation of the charge-parity symmetry in D0→K+K- and D0→π+π- decays is performed at the LHCb experiment using proton-proton collision data recorded from 2015 to 2018 at a center-of-mass energy of 13 TeV, corre…
View article: Observation of the $B_s^0 \rightarrow D^{\ast \pm} D^{\mp}$ decay
Observation of the $B_s^0 \rightarrow D^{\ast \pm} D^{\mp}$ decay Open
A search for the $B^0_s \\!\\rightarrow D^{*\\pm} D^\\mp$ decay is performed using proton-proton collision data at centre-of-mass energies of $7$, $8$ and $13\\,\\text{TeV}$ collected by the LHCb experiment, corresponding to an integrated …
View article: Measurement of the $B^0_s\to\mu^+\mu^-$ decay properties and search for the $B^0\to\mu^+\mu^-$ and $B^0_s\to\mu^+\mu^-\gamma$ decays
Measurement of the $B^0_s\to\mu^+\mu^-$ decay properties and search for the $B^0\to\mu^+\mu^-$ and $B^0_s\to\mu^+\mu^-\gamma$ decays Open
An improved measurement of the decay $B^0_s\\to\\mu^+\\mu^-$ and searches for the decays $B^0\\to\\mu^+\\mu^-$ and $B^0_s\\to\\mu^+\\mu^-\\gamma$ are performed at the LHCb experiment using data collected in proton-proton collisions at $\\s…
View article: Evidence for a new structure in the $J/\psi p$ and $J/\psi \bar{p}$ systems in $B_s^0 \to J/\psi p \bar{p}$ decays
Evidence for a new structure in the $J/\psi p$ and $J/\psi \bar{p}$ systems in $B_s^0 \to J/\psi p \bar{p}$ decays Open
An amplitude analysis of flavour-untagged $B_s^0 \\to J/\\psi p \\bar{p}$ decays is performed using a sample of $797\\pm31$ decays reconstructed with the LHCb detector. The data, collected in proton-proton collisions between 2011 and 2018,…
View article: Evidence of a $J/\\psi \\varLambda$ structure and observation of excited $\\varXi^-$ states in the $\\varXi_b^-\\to J/\\psi \\varLambda K^-$ decay
Evidence of a $J/\\psi \\varLambda$ structure and observation of excited $\\varXi^-$ states in the $\\varXi_b^-\\to J/\\psi \\varLambda K^-$ decay Open
First evidence of a structure in the $J/\\psi \\varLambda$ invariant mass distribution is obtained from an amplitude analysis of $\\varXi_b^- \\to J/\\psi \\varLambda K^-$ decays. The observed structure is consistent with being due to a ch…
View article: Search for the rare decay $B^0 \to J/\psi\phi$
Search for the rare decay $B^0 \to J/\psi\phi$ Open
A search for the rare decay $B^{0} \\rightarrow J/\\psi \\phi$ is performed using $pp$ collision data collected with the LHCb detector at centre-of-mass energies of 7, 8 and 13 TeV, corresponding to an integrated luminosity of 9 ${\\rm fb}…
View article: Measurement of $|V_{cb}|$ with $B_s^0 \to D_s^{(*)-} \mu^+ \nu_{\mu}$ decays
Measurement of $|V_{cb}|$ with $B_s^0 \to D_s^{(*)-} \mu^+ \nu_{\mu}$ decays Open
The element $|V_{cb}|$ of the Cabibbo-Kobayashi-Maskawa matrix is measured using semileptonic $B_s^0$ decays produced in proton-proton collision data collected with the LHCb detector at center-of-mass energies of 7 and 8 TeV, corresponding…
View article: Measurement of the $CP$-violating phase $\phi_s$ from $B_{s}^{0}\to J/\psi\pi^+\pi^-$ decays in 13 TeV $pp$ collisions
Measurement of the $CP$-violating phase $\phi_s$ from $B_{s}^{0}\to J/\psi\pi^+\pi^-$ decays in 13 TeV $pp$ collisions Open
Decays of $B_{s}^{0}$ and $\\overline{B}{}_{s}^{0}$ mesons into $J/\\psi\\pi^+\\pi^-$ final states are studied in a data sample corresponding to 1.9 fb$^{-1}$ of integrated luminosity collected with the LHCb detector in 13 TeV $pp$ collisi…
View article: The Baby MIND spectrometer for the J-PARC T59(WAGASCI) experiment
The Baby MIND spectrometer for the J-PARC T59(WAGASCI) experiment Open
The Baby MIND spectrometer is designed to measure the momentum and charge of muons from neutrino interactions in water and hydrocarbon targets at the J-PARC T59 (WAGASCI) experiment. The WAGASCI experiment will measure the ratio of neutrin…
View article: Synchronization of the distributed readout frontend electronics of the Baby MIND detector
Synchronization of the distributed readout frontend electronics of the Baby MIND detector Open
Baby MIND is a new downstream muon range detector for the WGASCI experiment. This article discusses the distributed readout system and its timing requirements. The paper presents the design of the synchronization subsystem and the results …
View article: Baby MIND Experiment Construction Status
Baby MIND Experiment Construction Status Open
Baby MIND is a magnetized iron neutrino detector, with novel design features, and is planned to serve as a downstream magnetized muon spectrometer for the WAGASCI experiment on the T2K neutrino beam line in Japan. One of the main goals of …
View article: Baby MIND: A magnetised spectrometer for the WAGASCI experiment
Baby MIND: A magnetised spectrometer for the WAGASCI experiment Open
The WAGASCI experiment being built at the J-PARC neutrino beam line will measure the difference in cross sections from neutrinos interacting with a water and scintillator targets, in order to constrain neutrino cross sections, essential fo…
View article: Readout scheme for the Baby-MIND detector
Readout scheme for the Baby-MIND detector Open
A readout scheme has been designed for the plastic scintillator bars of the Baby-MIND detector modules. This spectrometer will measure momentum and identify the charge of 1 GeV/c muons with magnetized iron plates interleaved with detector …
View article: The design, construction and testing of TASD (Totally Active Scintillator Detector)
The design, construction and testing of TASD (Totally Active Scintillator Detector) Open
Totally Active Scintillator Detector (TASD) for future neutrino experiments is assembled out of 50 module planes of plastic scintillators.The modules are instrumented with one X and one Y plane, with 86 scintillator bars per each plane.The…
View article: The new experiment WAGASCI for water to hydrocarbon neutrino cross section measurement using the J-PARC beam
The new experiment WAGASCI for water to hydrocarbon neutrino cross section measurement using the J-PARC beam Open
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