2021-08-05
16:55 |
Simultaneous determination of CKM angle $\gamma$ and charm mixing parameters
/LHCb Collaboration
A combination of measurements sensitive to the $CP$ violation angle $\gamma$ of the Cabibbo--Kobayashi--Maskawa (CKM) unitarity triangle and to the charm mixing parameters that describe oscillations between $D^0$ and $\overline{D}^0$ mesons is performed. Results from the charm and beauty sectors, based on data collected with the LHCb detector at CERN's Large Hadron Collider, are included together for the first time. [...]
LHCb-CONF-2021-001; CERN-LHCb-CONF-2021-001.-
Geneva : CERN, 2021 - 22.
Fulltext: LHCb-CONF-2021-001 - PDF; LHCb-CONF-2021-001-figures - ZIP;
In : European Physics Society conference on High Energy Physics 2021, Online, Online, 26 - 30 Jul 2021
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2020-10-29
15:57 |
Updated LHCb combination of the CKM angle $\gamma$
/LHCb Collaboration
The latest results of the CKM angle $\gamma$ combination are presented for the 2020 LHCb Implications Workshop. New and updated inputs from $B^+ \to Dh^+$ ($D\to h^+h^-$), $B^+ \to Dh^+$ ($D \to K^0_{\rm S} h^+h^-$), $B^+ \to Dh^+$ ($D \to K^0_{\rm S} K^+ \pi^-$), $B^+ \to D^*h^+$ ($D\to h^+h^-$), $B^0 \to D K^{*0}$ ($D\to h^+h^-$ and $D\to h^+\pi^-\pi^+\pi^-$) and $B^0_s \to D^\mp_s K^\pm \pi^\mp \pi^\pm$ ($D^+_s \to h^+ h^- \pi^+$) decays are included, where $h = K$ or $\pi$. [...]
LHCb-CONF-2020-003; CERN-LHCb-CONF-2020-003.-
Geneva : CERN, 2020 - mult.p.
Fulltext: LHCb-CONF-2020-003-figures - ZIP; LHCb-CONF-2020-003 - PDF;
In : Implications of LHCb measurements and future prospects, Cern, Switzerland, 28 - 30 Oct 2020
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2020-08-06
15:37 |
Combination of the ATLAS, CMS and LHCb results on the $B^0_{(s)} \to \mu^+ \mu^-$ decays
/LHCb Collaboration
A combination of results on the rare $B^0_{s} \to \mu^+ \mu^-$ and $B^0 \to \mu^+ \mu^-$ decays from the ATLAS, CMS, and LHCb experiments using data collected at the Large Hadron Collider between 2011 and 2016, is presented. The $B^0_{s} \to \mu^+ \mu^-$ branching fraction is obtained to be $\left( 2.69\,^{+\, 0.37}_{-\, 0.35} \right) \times 10^{-9}$ and the effective lifetime of the $B^0_{s} \to \mu^+ \mu^-$ decay is measured to be $\tau_{B^0_{s} \to \mu^+ \mu^-} = 1.91^{+0.37}_{-0.35} \rm{ps}$. [...]
LHCb-CONF-2020-002; CERN-LHCb-CONF-2020-002.-
Geneva : CERN, 2020 - 11.
Fulltext: LHCb-CONF-2020-002-figures - ZIP; LHCb-CONF-2020-002 - PDF;
In : 40th International Conference on High Energy Physics, Prague, Czech Republic, 28 Jul - 6 Aug 2020
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2020-08-04
17:05 |
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2019-11-14
10:25 |
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2019-11-12
08:41 |
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2019-11-12
08:38 |
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2019-09-16
15:22 |
Strong constraints on the $K^0_s \to \mu^+ \mu^-$ branching fraction
/LHCb Collaboration
A search for the decay $K^0_s \to \mu^+ \mu^-$ is performed using proton-proton collision data, corresponding to an integrated luminosity of $5.6 \, \text {fb}^{-1}$, collected with the LHCb experiment during 2016, 2017 and 2018 at a center-of-mass energy of $13\,\mathrm{TeV}$. The observed number of signal decays is consistent with zero, yielding an upper limit of $\mathcal {B}( K^0_s \to \mu^+ \mu^-) < 2.2\,(2.6)\times 10^{-10}$ at $90$ $(95)\% ~\text {CL}$ [...]
LHCb-CONF-2019-002; CERN-LHCb-CONF-2019-002.-
Geneva : CERN, 2019 - 9.
Fulltext: PDF;
In : International Conference on Kaon Physics 2019, Perugia, Italy, 10 - 13 Sep 2019
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2019-05-17
11:08 |
Search for time-dependent $CP$ violation in $D^0 \to K^+ K^-$ and $D^0 \to \pi^+ \pi^-$ decays
/LHCb Collaboration
A search for charge-parity ($CP$) violation in the time-dependent decay rates of $D^0 \to K^+ K^-$ and $D^0 \to \pi^+ \pi^-$ decays is reported. The data correspond to an integrated luminosity of $1.9\,{\rm fb}^{-1}$ collected by the LHCb detector in 2015--2016 in $pp$ collisions at a centre-of-mass energy of $13\,{\rm TeV}$ [...]
LHCb-CONF-2019-001; CERN-LHCb-CONF-2019-001.-
Geneva : CERN, 2019 - 29.
Fulltext: LHCb-CONF-2019-001 - PDF; LHCb-CONF-2019-001-figs - ZIP;
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2018-12-04
10:08 |
Prospects for searches for long-lived particles after the LHCb detector upgrades
/LHCb Collaboration
The LHCb detector is a single-arm forward spectrometer covering the pseudorapidity range $2 < \eta < 5$, initially designed for the study of particles containing $b$ or $c$ quarks. As such, it is naturally suited for the search of beyond SM long-lived particles in a range of mass and lifetime not too dissimilar to heavy-flavour hadrons, as it has been demonstrated in several publications [...]
LHCb-CONF-2018-006; CERN-LHCb-CONF-2018-006.-
Geneva : CERN, 2018 - 12.
Fulltext: LHCb-CONF-2018-006 - PDF; LHCb_CONF_2018_006_figures - ZIP;
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