2018-05-09
13:47 |
Measurement of $CP$ violation in $B^{0}\rightarrow D^{\mp}\pi^{\pm}$ decays
/ LHCb Collaboration
A measurement of the $CP$ asymmetries $S_{f}$ and $S_{\bar{f}}$ in $B^0\to D^{\mp}\pi^{\pm}$ decays is reported. The decays are reconstructed in a dataset collected with the LHCb experiment in proton-proton collisions at centre-of-mass energies of 7 and 8 TeV and corresponding to an integrated luminosity of $3.0 \rm{ fb}^{-1}$. [...]
LHCb-PAPER-2018-009; CERN-EP-2018-084; LHCB-PAPER-2018-009; CERN-EP-2018-084; arXiv:1805.03448; LHCB-PAPER-2018-009.-
Geneva : CERN, 2018 - 24 p.
- Published in : JHEP 06 (2018) 084
Article from SCOAP3: PDF; Fulltext: LHCb-PAPER-2018-009_arXivSubmission - PDF; 1805.03448 - PDF; Related data file(s): ZIP; Supplementary information: ZIP;
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2018-04-06
10:58 |
Measurement of the $CP$ asymmetry in $B^-\to D_s^-D^0$ and $B^-\to D^-D^0$ decays
/ LHCb Collaboration
The $CP$ asymmetry in $B^-\to D_s^-D^0$ and $B^-\to D^-D^0$ decays is measured using LHCb data corresponding to an integrated luminosity of 3.0 fb$^{-1}$, collected in $pp$ collisions at centre-of-mass energies of 7 and 8 TeV. The results are $A^{CP}(B^-\to D_s^-D^0)=(-0.4\pm 0.5\pm 0.5)\%$ and $A^{CP}(B^-\to D^-D^0)=( 2.3\pm 2.7\pm 0.4)\%$, where the first uncertainties are statistical and the second systematic. [...]
LHCb-PAPER-2018-007; CERN-EP-2018-046; arXiv:1803.10990; LHCB-PAPER-2018-007.-
Geneva : CERN, 2018-05-25 - 18 p.
- Published in : 10.1007/JHEP05(2018)160
Article from SCOAP3: PDF; Fulltext: PDF; Related data file(s): ZIP; Supplementary information: ZIP;
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2018-03-29
17:40 |
Search for the Standard Model Higgs Boson at LEP
/DELPHI Collaboration ; ALEPH Collaboration ; L3 Collaboration ; OPAL Collaboration
The four LEP collaborations, ALEPH, DELPHI, L3 and OPAL, have collected 2461 pb−1 of e+e− collision data at centre-of-mass energies between 189 and 209 GeV, of which 536 pb−1 have energies above 206 GeV. The data have been used to search for the Standard Model Higgs boson. [...]
CERN-ALEPH-2002-024; CERN-ALEPH-CONF-2002-013; DELPHI-2002-088-CONF-621; CERN-DELPHI-2002-088-CONF-621; L3-Note-2766; OPAL-TN721; LHWG-Note-2002-01.-
Geneva : CERN, 2002 - 28 p.
Fulltext: cer-002264432 - PDF; aleph-2002-024 - PDF;
In : 31st International Conference on High Energy Physics, Amsterdam, The Netherlands, 25 - 31 Jul 2002
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2018-01-12
14:34 |
Evidence for the rare decay $\Sigma^+ \to p \mu^+ \mu^-$
/ LHCb Collaboration
A search for the rare decay $\Sigma^+ \to p \mu^+ \mu^-$ is performed using $pp$ collision data recorded by the LHCb experiment at centre-of-mass energies $\sqrt{s} = 7$ and $8$ TeV, corresponding to an integrated luminosity of $3 fb^{-1}$. An excess of events is observed with respect to the background expectation, with a signal significance of 4.1 standard deviations. [...]
LHCB-PAPER-2017-049; CERN-EP-2017-319; arXiv:1712.08606.-
Geneva : CERN, 2018-06-01 - 10 p.
- Published in : Phys. Rev. Lett. 120 (2018) 221803
Article from SCOAP3: PDF; Preprint: PDF; Related data file(s): ZIP; Supplementary information: ZIP;
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2018-01-11
09:32 |
Studies of the resonance structure in $D^{0} \to K^\mp \pi^\pm \pi^\pm \pi^\mp$ decays
/ LHCb Collaboration
Amplitude models are constructed to describe the resonance structure of ${D^{0}\to K^{-}\pi^{+}\pi^{+}\pi^{-}}$ and ${D^{0} \to K^{+}\pi^{-}\pi^{-}\pi^{+}}$ decays using $pp$ collision data collected at centre-of-mass energies of 7 and 8 TeV with the LHCb experiment, corresponding to an integrated luminosity of $3.0\mathrm{fb}^{-1}$. The largest contributions to both decay amplitudes are found to come from axial resonances, with decay modes $D^{0} \to a_1(1260)^{+} K^{-}$ and $D^{0} \to K_1(1270/1400)^{+} \pi^{-}$ being prominent in ${D^{0}\to K^{-}\pi^{+}\pi^{+}\pi^{-}}$ and $D^{0}\to K^{+}\pi^{-}\pi^{-}\pi^{+}$, respectively. [...]
LHCB-PAPER-2017-040; CERN-EP-2017-314; arXiv:1712.08609; LHCB-PAPER-2017-040-CERN-EP-2017-314.-
Geneva : CERN, 2018-06-02 - 31 p.
- Published in : 10.1140/epjc/s10052-018-5758-4
Article from SCOAP3: PDF; Preprint: PDF; Related data file(s): ZIP; External link: Previous draft version
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2018-01-08
14:52 |
First measurement of the $CP$-violating phase $\phi_s^{d\overline{d}}$ in $B_s^0\to(K^+\pi^-)(K^-\pi^+)$ decays
/ LHCb Collaboration
A flavour-tagged decay-time-dependent amplitude analysis of $B_s^0\to(K^+\pi^-)(K^-\pi^+)$ decays is presented in the $K^{\pm}\pi^{\mp}$ mass range from 750 to 1600 MeV$/c^2$. The analysis uses $pp$ collision data collected with the LHCb detector at centre-of-mass energies of $7$ and $8$ TeV, corresponding to an integrated luminosity of $3.0$ fb$^{-1}$. [...]
LHCB-PAPER-2017-048; CERN-EP-2017-320; arXiv:1712.08683.-
Geneva : CERN, 2018-03-23 - 33 p.
- Published in : JHEP 03 (2018) 140
Article from SCOAP3: PDF; Fulltext: PDF; Preprint: PDF; Related data file(s): ZIP; Supplementary information: ZIP;
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2017-12-22
09:56 |
Search for weakly decaying $b$-flavored pentaquarks
/ LHCb Collaboration
Investigations of the existence of pentaquark states containing a single $b$ (anti)quark decaying weakly into four specific final states J/$\psi K^+\pi^- p$, J/$\psi K^- \pi^- p$, J/$\psi K^- \pi^+ p$, and $J/\psi \phi (1020) p$ are reported. The data sample corresponds to an integrated luminosity of 3.0/fb in 7 and 8 TeV pp collisions acquired with the LHCb detector. [...]
CERN-EP-2017-329; LHCB-PAPER-2017-043; arXiv:1712.08086; LHCB-PAPER-2017-043.-
Geneva : CERN, 2018-02-17 - 11 p.
- Published in : Phys. Rev. D 97 (2018) 032010
Article from SCOAP3: PDF; Preprint: PDF; Related data file(s): ZIP;
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2017-12-21
15:21 |
Measurement of $CP$ asymmetry in $B_s^0 \to D_s^{\mp} K^{\pm}$ decays
/ LHCb Collaboration
We report the measurements of the $CP$-violating parameters in $B_s^0 \to D_s^{\mp} K^{\pm}$ decays observed in $pp$ collisions, using a data set corresponding to an integrated luminosity of $3.0\,\text{fb}^{-1}$ recorded with the LHCb detector. We measure $C_f = 0.73 \pm 0.14 \pm 0.05$, $A^{\Delta \Gamma}_f = 0.39 \pm 0.28 \pm 0.15$, $A^{\Delta \Gamma}_{\overline{f}} = 0.31 \pm 0.28 \pm 0.15$, $S_f = -0.52 \pm 0.20 \pm 0.07$, $S_{\overline{f}} = -0.49 \pm 0.20 \pm 0.07$, where the uncertainties are statistical and systematic, respectively. [...]
LHCB-PAPER-2017-047; CERN-EP-2017-315; arXiv:1712.07428; LHCB-PAPER-2017-047.-
Geneva : CERN, 2018-03-12 - 28 p.
- Published in : JHEP 03 (2018) 059
Preprint: PDF; Related data file(s): ZIP; Supplementary information: ZIP;
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2017-12-20
15:34 |
A measurement of the $CP$ asymmetry difference in $\varLambda_{c}^{+} \to pK^{-}K^{+}$ and $p\pi^{-}\pi^{+}$ decays
/ LHCb Collaboration
The difference between the $CP$ asymmetries in the decays $\varLambda_{c}^{+} \to pK^{-}K^{+}$ and $\varLambda_{c}^{+} \to p\pi^{-}\pi^{+}$ is presented. Proton-proton collision data taken at centre-of-mass energies of $7$ and $8\,\mathrm{TeV}$ collected by the LHCb detector in 2011 and 2012 are used, corresponding to an integrated luminosity of $3\,\mathrm{fb}^{-1}$. [...]
CERN-EP-2017-316; LHCB-PAPER-2017-044; arXiv:1712.07051; LHCB-PAPER-2017-044.-
Geneva : CERN, 2018 - 21 p.
- Published in : JHEP 03 (2018) 182
Article from SCOAP3: PDF; Preprint: PDF; Related data file(s): ZIP; Supplementary information: ZIP;
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2017-11-21
11:13 |
Search for excited $B_c^+$ states
/ LHCb Collaboration
A search is performed in the invariant mass spectrum of the $B_c^{+}\pi^{+}\pi^{-}$ system for the excited $B_c^{+}$ states $B_c(2^{1}S_{0})^+$ and $B_c(2^{3}S_{1})^+$ using a data sample of $pp$ collisions collected by the LHCb experiment at the centre-of-mass energy of $\sqrt{s} = 8 \,{\mathrm{TeV}}$, corresponding to an integrated luminosity of $2 \,{\mathrm{fb^{-1}}}$. No evidence is seen for either state. [...]
CERN-EP-2017-306; LHCB-PAPER-2017-042; arXiv:1712.04094; LHCB-PAPER-2017-042.-
Geneva : CERN, 2018-01-29 - 19 p.
- Published in : JHEP 01 (2018) 138
Article from SCOAP3: PDF; Preprint: PDF; Supplementary information: ZIP; External link: Additional information for the analysis
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