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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;

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Measurement of $\psi(2S)$ production cross-sections in proton-proton collisions at $\sqrt{s} = 7$ and 13 TeV / LHCb Collaboration
The cross-sections of $\psi(2S)$ meson production in proton-proton collisions at $\sqrt{s}=13~\mathrm{TeV}$ are measured with a data sample collected by the LHCb detector corresponding to an integrated luminosity of $275~p\mathrm{b}^{-1}$. The production cross-sections for prompt $\psi(2S)$ mesons and those for $\psi(2S)$ mesons from $b$-hadron decays ($\psi{(2S)}\mathrm{-from-}b$) are determined as functions of the transverse momentum, $p_{\mathrm{T}}$, and the rapidity, $y$, of the $\psi(2S)$ meson in the kinematic range $2<p_{\mathrm{T}}<20~\mathrm{GeV}/c$ and $2.0<y<4.5$. [...]
arXiv:1908.03099; CERN-EP-2019-150; LHCb-PAPER-2018-049.- Geneva : CERN, 2020-02-28 - 23 p. - Published in : Eur. Phys. J. C 80 (2020) 185 Article from SCOAP3: PDF; Fulltext: PDF; Related data file(s): ZIP;

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Amplitude analysis of $B^\pm \to \pi^\pm K^+ K^-$ decays / LHCb Collaboration
The first amplitude analysis of the $B^\pm \to \pi^\pm K^+ K^-$ decay is reported based on a data sample corresponding to an integrated luminosity of 3.0 fb$^{−1}$ of $pp$ collisions recorded in 2011 and 2012 with the LHCb detector. The data is found to be best described by a coherent sum of five resonant structures plus a nonresonant component and a contribution from $\pi \pi \leftrightarrow KK$ $S$-wave rescattering. [...]
arXiv:1905.09244; LHCb-PAPER-2018-051; CERN-EP-2019-062; LHCB-PAPER-2018-051.- Geneva : CERN, 2019-12-07 - 11 p. - Published in : Phys. Rev. Lett. 123 (2019) 231802 Article from SCOAP3: PDF; Fulltext: PDF; Related data file(s): ZIP; Supplementary information: ZIP;

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Measurements of $CP$ asymmetries in charmless four-body $\Lambda^0_b$ and $\Xi_b^0$ decays / LHCb Collaboration
A search for $CP$ violation in charmless four-body decays of $\Lambda^0_b$ and $\Xi_b^0$ baryons with a proton and three charged mesons in the final state is performed. To cancel out production and detection charge-asymmetry effects, the search is carried out by measuring the difference between the $CP$ asymmetries in a charmless decay and in a decay with an intermediate charmed baryon with the same particles in the final state. [...]
arXiv:1903.06792; LHCb-PAPER-2018-044; CERN-EP-2019-13; LHCb-PAPER-2018-044 and CERN-EP-2019-13; LHCB-PAPER-2018-044.- 2019-09-07 - 30 p. - Published in : Eur. Phys. J. C Article from SCOAP3: PDF; Fulltext: PDF; Related data file(s): ZIP;

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Amplitude analysis of $B^{0}_{s} \rightarrow K^{0}_{\textrm{S}} K^{\pm}\pi^{\mp}$ decays / LHCb Collaboration
The first untagged decay-time-integrated amplitude analysis of $B^{0}_{s} \rightarrow K^{0}_{\textrm{S}} K^{\pm}\pi^{\mp}$ decays is performed using a sample corresponding to $3.0\,$fb$^{-1}$ of $pp$ collision data recorded with the LHCb detector during 2011 and 2012. The data are described with an amplitude model that contains contributions from the intermediate resonances $K^{*}(892)^{0,+}$, $K^*_2(1430)^{0,+}$ and $K^*_0(1430)^{0,+}$, and their charge conjugates. [...]
arXiv:1902.07955; LHCb-PAPER-2018-045; CERN-EP-2019-017; LHCB-PAPER-2018-045.- Geneva : CERN, 2019-06-21 - 27 p. - Published in : JHEP 1906 (2019) 114 Article from SCOAP3: PDF; Fulltext: PDF; Related data file(s): ZIP;

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Measurement of $b$-hadron fractions in 13 TeV $pp$ collisions / LHCb Collaboration
The production fractions of $\overline{B}{_s^0}$ and $\Lambda_b^0$ hadrons, normalized to the sum of $B^-$ and $\overline{B}{^0}$ fractions, are measured in 13 TeV pp collisions using data collected by the LHCb experiment, corresponding to an integrated luminosity of 1.67fb$^{-1}$. These ratios, averaged over the $b$-hadron transverse momenta from 4 to 25 GeV and pseudorapidity from 2 to 5, are $0.122 \pm 0.006$ for $\overline{B}{_s^0}$, and $0.259 \pm 0.018$ for $\Lambda_b^0$, where the uncertainties arise from both statistical and systematic sources. [...]
arXiv:1902.06794; CERN-EP-2019-016; LHCb-PAPER-2018-050; LHCB-PAPER-2018-050.- 2019-08-29 - 11 p. - Published in : Phys. Rev. D 100 (2019) 031102 Article from SCOAP3: PDF; Fulltext: PDF; Related data file(s): ZIP;

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Dalitz Plot analysis of the $D^+ \to K^- K^+ K^+$ decay / LHCb Collaboration
The resonant structure of the doubly Cabibbo-suppressed decay $D^+\to K^-K^+K^+$ is studied for the first time. The measurement is based on a sample of $pp$-collision data, collected at a centre-of-mass energy of 8 TeV with the LHCb detector and corresponding to an integrated luminosity of 2 fb$^-1$. [...]
arXiv:1902.05884; LHCb-PAPER-2018-039; CERN-EP-2018-336.- Geneva : CERN, 2019-04-08 - 37 p. - Published in : JHEP 04 (2019) 063 Article from SCOAP3: PDF; Fulltext: PDF; Related data file(s): ZIP;

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Measurement of $B^+$, $B^0$ and $\Lambda_b^0$ production in $p\mkern 1mu\mathrm{Pb}$ collisions at $\sqrt{s_{NN}} = 8.16 \ \rm TeV$ / LHCb Collaboration
The production of $B^+$, $B^0$ and $\Lambda_b^0$ hadrons is studied in proton-lead collisions at a centre-of-mass energy per nucleon pair of $\sqrt{s_\mathrm{NN}}=8.16\,{\rm TeV}$ recorded with the LHCb detector at the LHC. The measurement uses a dataset corresponding to an integrated luminosity of $12.2\pm0.3\ \mathrm{nb}^{-1}$ for the case where the proton beam is projected into the LHCb detector (corresponding to measuring hadron production at positive rapidity) and $18.6\pm0.5\ \mathrm{nb}^{-1}$ for the lead beam projected into the LHCb detector (corresponding to measuring hadron production at negative rapidity). [...]
arXiv:1902.05599; LHCb-PAPER-2018-048; CERN-EP-2019-010; LHCb-PAPER-2018-048; CERN-EP-2019-010.- Geneva : CERN, 2019-03-28 - 21 p. - Published in : Phys. Rev. D 99 (2019) 052011 Article from SCOAP3: PDF; Fulltext: PDF; Related data file(s): ZIP;

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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;

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10.

Observation of the doubly Cabibbo-suppressed decay $\Xi_{c}^{+}\to p\phi$ / LHCb Collaboration
The doubly Cabibbo-suppressed decay $\Xi_{c}^{+}\to p\phi$ with $\phi\to K^{+}K^{-}$ is observed for the first time, with a statistical significance of more than fifteen standard deviations. The data sample used in this analysis corresponds to an integrated luminosity of 2 fb$^{-1}$ recorded with the LHCb detector in $pp$ collisions at a centre-of-mass energy of 8 TeV. [...]
arXiv:1901.06222; LHCb-PAPER-2018-040; CERN-EP-2018-349.- 2019-04-10 - 17 p. - Published in : JHEP 04 (2019) 084 Article from SCOAP3: PDF; Fulltext: PDF;

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Vedi anche: autori con nomi simili
168	Grunberg, O
35	Grunberg, O.
342	Grunberg, Oliver
35	Grünberg, O.
342	Grünberg, Oliver

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