recid:2764338 - Risultato della ricerca

Pagina principale > Risultato della ricerca: recid:2764338

Cerca collezioni:

Ordinamento per:	Visualizza risultati:	Formato di visualizzazione:

CERN Document Server	2,051 record trovati 1 - 10 salta al record:	La ricerca ha impiegato 6.57 secondi.

(100)

Precise determination of the $B_{\mathrm{s}}^0$–$\overline B_{\mathrm{s}}^0$ oscillation frequency / LHCb Collaboration
Mesons comprising a beauty quark and a strange quark can oscillate between particle (B0s) and antiparticle (B0sbar) flavour eigenstates, with a frequency given by the mass difference between heavy and light mass eigenstates, deltams. Here we present a measurement of deltams using B0s2DsPi decays produced in proton-proton collisions collected with the LHCb detector at the Large Hadron Collider. [...]
arXiv:2104.04421; LHCb-PAPER-2021-005; CERN-EP-2021-047; LHCB-PAPER-2021-005.- Geneva : CERN, 2022-01-06 - 20 p. - Published in : Nature Phys. 18 (2022) 1-5 Fulltext: 2104.04421 - PDF; document - PDF; LHCb-PAPER-2021-005-arXiv - PDF; Related data file(s): ZIP; Supplementary information: ZIP;

Record dettagliato - Record simili

(91)

First measurement of the $C\!P$-violating phase in ${{B} ^0_{s}} \!\rightarrow {{J /\psi }} (\rightarrow e ^+e ^-$)$\phi $ decays / LHCb Collaboration
A flavour-tagged time-dependent angular analysis of $B^0_s\to J/\psi\phi$ decays is presented where the $J/\psi$ meson is reconstructed through its decay to an $e^+e^-$ pair. The analysis uses a sample of $pp$ collision data recorded with the LHCb experiment at centre-of-mass energies of $7$ and $8$ TeV, corresponding to an integrated luminosity of $3$ fb$^{-1}$. [...]
arXiv:2105.14738; LHCb-PAPER-2020-042; CERN-EP-2021-064; LHCB-PAPER-2020-042.- Geneva : CERN, 2021-11-24 - 28 p. - Published in : Eur. Phys. J. C 81 (2021) 1026 Fulltext: document - PDF; LHCb-PAPER-2020-042 - PDF; 2105.14738 - PDF; Related data file(s): ZIP; Supplementary information: ZIP;

Record dettagliato - Record simili

(87)

Study of the doubly charmed tetraquark $T_{cc}^{+}$ / LHCb Collaboration
An exotic narrow state in the $D^0D^0\pi^+$ mass spectrum just below the $D^{*+}D^0$ mass threshold is studied using a data set corresponding to an integrated luminosity of 9fb$^{-1}$ acquired with the LHCb detector in proton-proton collisions at centre-of-mass energies of 7, 8 and 13TeV. The state is consistent with the ground isoscalar $T^+_{cc}$ tetraquark with a quark content of $cc\bar{u}\bar{d}$ and spin-parity quantum numbers $\mathrm{J}^{\mathrm{P}}=1^+$. [...]
arXiv:2109.01056; CERN-EP-2021-169; LHCb-PAPER-2021-032; LHCB-PAPER-2021-032.- Geneva : CERN, 2022-06-16 - 60 p. - Published in : Nature Commun. 13 (2022) 3351 Fulltext: document - PDF; 2109.01056 - PDF; LHCb-PAPER-2021-032 - PDF; Related data file(s): ZIP; Supplementary information: ZIP;

Record dettagliato - Record simili

(85)

Search for the doubly charmed baryon ${\it{\Omega}_{cc}^{+}}$ / LHCb Collaboration
A search for the doubly charmed baryon $\it{\Omega}_{cc}^{+}$ with the decay mode $\it{\Omega}_{cc}^{+}\to\it{\Xi}_c^{+}K^{-}\pi^{+}$ is performed using proton-proton collision data at a centre-of-mass energy of 13$\mathrm{\,Te\kern -0.1em V}$ collected by the LHCb experiment from 2016 to 2018, corresponding to an integrated luminosity of $5.4\,\mathrm{fb}^{-1}$. No significant signal is observed within the invariant mass range of 3.6 to 4.0$\mathrm{\,Ge\kern -0.1em V}/c^2$. [...]
arXiv:2105.06841; LHCb-PAPER-2021-011; CERN-EP-2021-068; LHCB-PAPER-2021-011.- 2021-08-31 - 12 p. - Published in : Sci. China Phys. Mech. Astron. 64 (2021) 101062 Fulltext: document - PDF; 2105.06841 - PDF; Fulltext from publisher: PDF; Related data file(s): ZIP; Supplementary information: ZIP;

Record dettagliato - Record simili

(85)

Test of lepton universality in beauty-quark decays / LHCb Collaboration
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 interaction strengths. [...]
arXiv:2103.11769; LHCb-PAPER-2021-004; CERN-EP-2021-042.- Geneva : CERN, 2022-03-15 - 25 p. - Published in : Nature Phys. Fulltext: LHCb-PAPER-2021-004 - PDF; Addendum - PDF; Publication - PDF; 2103.11769 - PDF; Related data file(s): ZIP; Supplementary information: ZIP; External links: CERN News article; LHCb News article; Interactions.org article; BBC News article; Scientific American article

Record dettagliato - Record simili

(85)

Angular analysis of $ {B}^0\to {D}^{\ast -}{D}_s^{\ast +} $ with $ {D}_s^{\ast +}\to {D}_s^{+}\gamma $ decays / LHCb Collaboration
The first full angular analysis of the $B^0 \to D^{*-} D_s^{*+}$ decay is performed using 6 fb$^{-1}$ of $pp$ collision data collected with the LHCb experiment at a centre-of-mass energy of 13 TeV. The $D_s^{*+} \to D_s^+ \gamma$ and $D^{*-} \to \bar{D}^0 \pi^-$ vector meson decays are used with the subsequent $D_s^+ \to K^+ K^- \pi^+$ and $\bar{D}^0 \to K^+ \pi^-$ decays. [...]
arXiv:2105.02596; LHCb-PAPER-2021-006; CERN-EP-2021-056; LHCB-PAPER-2021-006.- Geneva : CERN, 2021-06-29 - 31 p. - Published in : JHEP 2106 (2021) 177 Fulltext: LHCb-PAPER-2021-006 - PDF; document - PDF; 2105.02596 - PDF; Related data file(s): ZIP;

Record dettagliato - Record simili

(83)

Searches for rare $ {B}_s^0 $ and B$^{0}$ decays into four muons / LHCb Collaboration
Searches for rare $B_s^0$ and $B^0$ decays into four muons are performed using proton-proton collision data recorded by the LHCb experiment, corresponding to an integrated luminosity of 9 $\text{fb}^{-1}$. Direct decays and decays via light scalar and $J/\psi$ resonances are considered. [...]
arXiv:2111.11339; LHCb-PAPER-2021-039; CERN-EP-2021-236.- 2022-03-17 - 27 p. - Published in : JHEP 2203 (2022) 109 Fulltext: 2111.11339 - PDF; document - PDF; Fulltext from publisher: PDF; Related data file(s): ZIP;

Record dettagliato - Record simili

(80)

Observation of $\Xi_b^0 \rightarrow \Xi_c^+ D_s^-$ and $\Xi_b^- \rightarrow \Xi_c^0 D_s^-$ decaysObservation of $\Xi_b^0 \rightarrow \Xi_c^+ D_s^-$ and $\Xi_b^- \rightarrow \Xi_c^0 D_s^-$ decays / LHCb Collaboration
The $\Xi_b^0 \rightarrow \Xi_c^+ D_s^-$ and $\Xi_b^- \rightarrow \Xi_c^0 D_s^-$ decays are observed for the first time using proton-proton collision data collected by the LHCb experiment at a centre-of-mass energy of $\sqrt{s}=13\mathrm{TeV}$, corresponding to an integrated luminosity of $5.1\mathrm{fb}^{-1}$. The relative branching fractions times the beauty-baryon production cross-sections are measured to be $\begin{align*} \mathcal{R}\left(\frac{\Xi_b^0}{\Lambda_b^0}\right) &\equiv \frac{\sigma\left(\Xi_b^0\right)}{\sigma\left(\Lambda_b^0\right)} \times \frac{\mathcal{B}\left(\Xi_b^0 \rightarrow \Xi_c^+ D_s^-\right)}{\mathcal{B}\left(\Lambda_b^0 \rightarrow \Lambda_c^0 D_s^-\right)} =(15.8\pm1.1\pm0.6\pm7.7)\%,\\ \mathcal{R}\left(\frac{\Xi_b^-}{\Lambda_b^0}\right) &\equiv \frac{\sigma\left(\Xi_b^-\right)}{\sigma\left(\Lambda_b^0\right)} \times \frac{\mathcal{B}\left(\Xi_b^- \rightarrow \Xi_c^0 D_s^-\right)}{\mathcal{B}\left(\Lambda_b^0 \rightarrow \Lambda_c^0 D_s^-\right)} =(16.9\pm1.3\pm0.9\pm4.3)\%, \end{align*}$ where the first uncertainties are statistical, the second systematic, and the third due to the uncertainties on the branching fractions of relevant charm-baryon decays. [...]
arXiv:2310.13546; CERN-EP-2023-173; LHCb-PAPER-2023-017.- Geneva : CERN, 2024-03-07 - 17 p. - Published in : Eur. Phys. J. C 84 (2024) 237 Fulltext: LHCb-PAPER-2023-017 - PDF; 2310.13546 - PDF; Publication - PDF; Related data file(s): ZIP;

Record dettagliato - Record simili

(79)

Observation of new excited ${B} ^0_{s} $ states / LHCb Collaboration
A structure is observed in the $B^+K^-$ mass spectrum in a sample of proton--proton collisions at centre-of-mass energies of 7, 8, and 13 TeV, collected with the LHCb detector and corresponding to a total integrated luminosity of 9 fb${}^-1$. The structure is interpreted as the result of overlapping excited $B_s^0$ states. [...]
arXiv:2010.15931; LHCb-PAPER-2020-026; CERN-EP-2020-185; LHCB-PAPER-2020-026.- Geneva : CERN, 2021-07-12 - 17 p. - Published in : Eur. Phys. J. C 81 (2021) 601 Fulltext: LHCb-PAPER-2020-026 - PDF; document - PDF; 2010.15931 - PDF; Related data file(s): ZIP; Supplementary information: ZIP;

Record dettagliato - Record simili

10.

(79)

Search for ${{B} _{c} ^+} \!\rightarrow {{\pi } ^+} {\mu ^+\mu ^-} $ decays and measurement of the branching fraction ratio ${\mathcal {B}} ({{B} _{c} ^+} \!\rightarrow {\psi {(2S)}} {{\pi } ^+} )/{\mathcal {B}} ({{B} _{c} ^+} \!\rightarrow {{J \hspace{-1.66656pt}/\hspace{-1.111pt}\psi }} {{\pi } ^+} )$ / LHCb Collaboration
The first search for nonresonant $B_c^+\to\pi^+\mu^+\mu^-$ decays is reported. The analysis uses proton-proton collision data collected with the LHCb detector between 2011 and 2018, corresponding to an integrated luminosity of 9 fb$^{-1}$. [...]
arXiv:2312.12228; LHCb-PAPER-2023-037; CERN-EP-2023-280; LHCB-PAPER-2023-037.- Geneva : CERN, 2024-05-07 - 27 p. - Published in : Eur. Phys. J. C 84 (2024) 468 Fulltext: LHCb-Paper-2023-037 - PDF; 2312.12228 - PDF; document - PDF; Related data file(s): ZIP;

Record dettagliato - Record simili

Non hai trovato quello che cercavi? Prova la ricerca su altri server:
recid:2764338 in Amazon recid:2764338 in CERN EDMS recid:2764338 in CERN Intranet recid:2764338 in CiteSeer recid:2764338 in Google Books recid:2764338 in Google Scholar recid:2764338 in Google Web recid:2764338 in IEC	recid:2764338 in IHS recid:2764338 in INSPIRE recid:2764338 in ISO recid:2764338 in KISS Books/Journals recid:2764338 in KISS Preprints recid:2764338 in NEBIS recid:2764338 in SLAC Library Catalog

CERN Document Server

Access articles, reports and multimedia content in HEP

Main menu

CERN Accelerating science