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CERN Document Server 373 ჩანაწერია ნაპოვნი  1 - 10შემდეგიდასასრული  ჩანაწერთან გადასვლა: ძიებას დასჭირდა 0.59 წამი. 
1.
Search for Darkonium in $e^+e^-$ Collisions / BABAR Collaboration
Collider searches for dark sectors, new particles interacting only feebly with ordinary matter, have largely focused on identifying signatures of new mediators, leaving much of dark sector structures unexplored. In particular, the existence of dark matter bound states (darkonia) remains to be investigated. [...]
arXiv:2106.08529; BABAR-PUB-21/002; SLAC-PUB-17608.- 2022-01-11 - 10 p. - Published in : Phys. Rev. Lett. 128 (2022) 021802 Fulltext: PDF;
2.
Measurement of the ratio of branching fractions of the decays $\Lambda_b^0 \!\to \psi(2S) \Lambda$ and $\Lambda_b^0 \!\to J\!/\!\psi \Lambda$ / LHCb Collaboration
Using $pp$ collisions corresponding to 3$\,\text{fb}^{-1}$ integrated luminosity, recorded by the LHCb experiment at centre-of-mass energies of 7 and 8$\,\text{TeV}$, the ratio of branching fractions \begin{align*} \mathcal{B}(\Lambda^0_b\!\to\psi(2S) \Lambda )/\mathcal{B}(\Lambda^0_b\!\to J/\psi \Lambda)= 0.513 \pm 0.023\, (\text{stat}) \pm 0.016 \, (\text{syst}) \pm 0.011\, (\mathcal{B}) \end{align*} is determined. The first uncertainty is statistical, the second is systematic and the third is due to the external branching fractions used..
arXiv:1902.02092; LHCb-PAPER-2017-041; CERN-EP-2019-003.- Geneva : CERN, 2019-03-22 - 16 p. - Published in : JHEP 03 (2019) 126 Article from SCOAP3: PDF; Fulltext: LHCb-Paper-2017-041 - PDF; 1902.02092 - PDF; Related data file(s): ZIP;
3.
Measurement of $\Upsilon$ production in $pp$ collisions at $\sqrt{s}$= 13 TeV / LHCb Collaboration
The production cross-sections of $\Upsilon(1S)$, $\Upsilon(2S)$ and $\Upsilon(3S)$ mesons in proton-proton collisions at $\sqrt{s}$= 13 TeV are measured with a data sample corresponding to an integrated luminosity of $277 \pm 11$ $\rm pb^{-1}$ recorded by the LHCb experiment in 2015. The $\Upsilon$ mesons are reconstructed in the decay mode $\Upsilon\to\mu^{+}\mu^{-}$. [...]
arXiv:1804.09214; LHCB-PAPER-2018-002; CERN-EP-2018-054; LHCB-PAPER-2018-002.- 2018-07-20 - 26 p. Article from SCOAP3: PDF; Fulltext: PDF; Related data file(s): ZIP; External link: Figures, tables and other information
4.
Observation of $B_s^0 \to \overline{D}^{*0} \phi$ and search for $B^0 \to \overline{D}^0 \phi$ decays / LHCb Collaboration
The first observation of the $B_s^0 \to \overline{D}^{*0} \phi$ decay is reported, with a significance of more than seven standard deviations, from an analysis of $pp$ collision data corresponding to an integrated luminosity of 3 fb$^{-1}$, collected with the LHCb detector at centre-of-mass energies of $7$ and $8$ TeV. The branching fraction is measured relative to that of the topologically similar decay $B^0 \to \overline{D}^0 \pi^+\pi^-$ and is found to be $\mathcal{B}(B_s^0 \to \overline{D}^{*0} \phi) = (3.7 \pm 0.5 \pm 0.3 \pm 0.2) \times 10^{-5}$, where the first uncertainty is statistical, the second systematic, and the third from the branching fraction of the $B^0 \to \overline{D}^0 \pi^+\pi^-$ decay. [...]
arXiv:1807.01892; LHCb-PAPER-2018-015; CERN-EP-2018-158; LHCB-PAPER-2018-015.- 2018-10-30 - 10 p. - Published in : Phys. Rev. D 98 (2018) 071103 Article from SCOAP3: PDF; Fulltext: PDF; Related data file(s): ZIP; External link: Figures, tables and other information
5.
Observation of the decay $B_s^0 \to \overline{D}^0 K^+ K^-$ / LHCb Collaboration
The first observation of the $B_s^0 \to \overline{D}^0 K^+ K^-$ decay is reported, together with the most precise branching fraction measurement of the mode $B^0 \to \overline{D}^0 K^+ K^-$. The results are obtained from an analysis of $pp$ collision data corresponding to an integrated luminosity of $3.0~\textrm{fb}^{-1}$. [...]
arXiv:1807.01891; LHCb-PAPER-2018-014; CERN-EP-2018-157; LHCB-PAPER-2018-014.- 2018-10-31 - 19 p. - Published in : Phys. Rev. D 98 (2018) 072006 Article from SCOAP3: PDF; Fulltext: LHCb-PAPER-2018-014-figures - ZIP; 1807.01891 - PDF; External link: Figures, tables and other information
6.
Central exclusive production of $J/\psi$ and $\psi(2S)$ mesons in $pp$ collisions at $\sqrt{s}=13~$TeV / LHCb Collaboration
Measurements are reported of the central exclusive production of \jpsi and \psitwos mesons in $pp$ collisions at a centre-of-mass energy of 13 TeV. Backgrounds are significantly reduced compared to previous measurements made at lower energies through the use of new forward shower counters. [...]
arXiv:1806.04079; LHCB-PAPER-2018-011; LHCb-PAPER-2018-011; CERN-EP-2018-152.- Geneva : CERN, 2018-10-26 - 27 p. - Published in : JHEP 10 (2018) 167 Article from SCOAP3: PDF; Fulltext: PDF; Related data file(s): ZIP; External link: Figures, tables and other information
7.
Search for a dimuon resonance in the $\Upsilon$ mass region / LHCb Collaboration
A search is performed for a spin-0 boson, $\phi$, produced in proton-proton collisions at centre-of-mass energies of 7 and 8 TeV, using prompt $\phi\rightarrow\mu^+\mu^-$ decays and a data sample corresponding to an integrated luminosity of approximately 3.0 ${\rm fb}^{-1}$ collected with the LHCb detector. No evidence is found for a signal in the mass range from 5.5 to 15 GeV. [...]
arXiv:1805.09820; LHCb-PAPER-2018-008; CERN-EP-2018-111; LHCB-PAPER-2018-008; LHCB-PAPER-2018-008.- Geneva : CERN, 2018-09-26 - 22 p. - Published in : JHEP 09 (2018) 147 Article from SCOAP3: PDF; Fulltext: PDF; Related data file(s): ZIP; Supplementary information: ZIP; External link: Figures, tables and other information
8.
Measurement of the time-integrated $CP$ asymmetry in $D^0 \rightarrow K^0_S K^0_S$ decays / LHCb Collaboration
A measurement of the time-integrated $CP$ asymmetry in $D^0\rightarrow K^0_S K^0_S$ decays is reported. The data correspond to an integrated luminosity of about $2$ fb$^{-1}$ collected in 2015-2016 by the LHCb collaboration in $pp$ collisions at a centre-of-mass energy of $13$ TeV [...]
arXiv:1806.01642; LHCb-PAPER-2018-012; CERN-EP-2018-133; LHCB-PAPER-2018-012.- Geneva : CERN, 2018-11-08 - 19 p. - Published in : JHEP 11 (2018) 048 Article from SCOAP3: PDF; Fulltext: PDF; Related data file(s): ZIP; Supplementary information: ZIP; External link: Figures, tables and other information
9.
Measurement of $D_s^{\pm}$ production asymmetry in $pp$ collisions at $\sqrt{s} =7$ and 8 TeV / LHCb Collaboration
The inclusive $D_s^{\pm}$ production asymmetry is measured in $pp$ collisions collected by the LHCb experiment at centre-of-mass energies of $\sqrt{s} =7$ and 8 TeV. Promptly produced $D_s^{\pm}$ mesons are used, which decay as $D_s^{\pm}\to\phi\pi^{\pm}$, with $\phi\to K^+K^-$ [...]
arXiv:1805.09869; LHCb-PAPER-2018-010; CERN-EP-2018-073; LHCB-PAPER-2018-010.- Geneva : CERN, 2018-08-02 - 22 p. - Published in : JHEP 08 (2018) 008 Article from SCOAP3: PDF; Fulltext: arXiv:1805.09869 - PDF; 1805.09869 - PDF; LHCb-PAPER-2018-010 - PDF; Related data file(s): ZIP; Supplementary Information: ZIP; External link: Figures, tables and other information
10.
Observation of a new $\Xi_b^-$ resonance / LHCb Collaboration
From samples of $pp$ collision data collected by the LHCb experiment at $\sqrt{s}=7$, $8$ and $13$ TeV corresponding to integrated luminosities of 1.0, 2.0 and 1.5 fb$^{-1}$, respectively, a peak in both the $\Lambda_b^0K^-$ and $\Xi_b^0\pi^-$ invariant mass spectra is observed. In the quark model, radially and orbitally excited $\Xi_b^-$ resonances with quark content $bds$ are expected. [...]
arXiv:1805.09418; LHCb-PAPER-2018-013; CERN-EP-2018-108; LHCB-PAPER-2018-013.- Geneva : CERN, 2018-08-16 - 12 p. - Published in : Phys. Rev. Lett. 121 (2018) 072002 Article from SCOAP3: PDF; Fulltext: arXiv:1805.09418 - PDF; 1805.09418 - PDF; Fulltext from Publisher: PDF; Related data file(s): ZIP; Supplementary information: ZIP; External link: Figures, tables and other information

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