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LHCb Papers

Letzte Einträge:
2019-11-04
11:32
Updated measurement of decay-time-dependent CP asymmetries in $D^0 \to K^+K^-$ and $D^0 \to \pi^+\pi^-$ decays / LHCb Collaboration
A search for decay-time-dependent charge-parity ($CP$) asymmetry in $D^0 \to K^+K^-$ and $D^0 \to \pi^+\pi^-$ decays is performed at the LHCb experiment using proton-proton collision data recorded at a center-of-mass energy of 13TeV, and corresponding to an integrated luminosity of 5.4fb$^{-1}$. [...]
arXiv:1911.01114 ; CERN-EP-2019-225 ; LHCb-PAPER-2019-032 ; LHCB-PAPER-2019-032.
- 2019.
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2019-10-22
16:33
Measurement of $f_s / f_u$ variation with proton-proton collision energy and kinematics / LHCb Collaboration
The ratio of the $B^0_s$ and $B^+$ fragmentation fractions $f_s$ and $f_u$ is studied with $B^0_s \to J/\psi \phi$ and $B^+ \to J/\psi K^+$ decays using data collected by the LHCb experiment in proton-proton collisions at 7, 8 and 13 TeV center-of-mass energies. [...]
arXiv:1910.09934 ; CERN-EP-2019-209 ; LHCb-PAPER-2019-020 ; LHCB-PAPER-2019-020.
- 2019. - 26 p, 26 p.
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2019-10-16
15:11
Search for $A' \to \mu^+ \mu^-$ decays / LHCb Collaboration
Searches are performed for both prompt-like and long-lived dark photons, $A'$, produced in proton-proton collisions at a center-of-mass energy of 13 TeV. [...]
arXiv:1910.06926 ; LHCb-PAPER-2019-031 ; CERN-EP-2019-212 ; LHCB-PAPER-2019-031.
- 2019. - 27 p.
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2019-09-30
17:35
Search for the doubly charmed baryon $\Xi_{cc}^{+}$ / LHCb Collaboration
A search for the doubly charmed baryon $\Xi_{cc}^{+}$ is performed through its decay to the $\Lambda_c^+ K^- \pi^+$ final state, using proton-proton collision data collected with the LHCb detector at centre-of-mass energies of 7, 8 and 13$\mathrm{\,Te\kern -0.1em V}$. [...]
arXiv:1909.12273 ; LHCb-PAPER-2019-029 ; CERN-EP-2019-199 ; LHCB-PAPER-2019-029.
- 2019. - 25 p.
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2019-09-13
11:15
Amplitude analysis of the $B^+ \to \pi^+ \pi^+ \pi^-$ decay / LHCb Collaboration
The results of an amplitude analysis of the charmless three-body decay $B^+ \to \pi^+ \pi^+ \pi^-$, in which $CP$-violation effects are taken into account, are reported. [...]
arXiv:1909.05212 ; LHCb-PAPER-2019-017 ; CERN-EP-2019-157 ; LHCB-PAPER-2019-017.
- 2019. - 78 p.
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2019-09-13
11:11
Observation of several sources of $CP$ violation in $B^+ \to \pi^+ \pi^+ \pi^-$ decays / LHCb Collaboration
Observations are reported of different sources of $CP$ violation from an amplitude analysis of $B^+ \to \pi^+ \pi^+ \pi^-$ decays, based on a data sample corresponding to an integrated luminosity of $3 \; {\rm fb}^{-1}$ of $pp$ collisions recorded with the LHCb detector. [...]
arXiv:1909.05211 ; LHCb-PAPER-2019-018 ; CERN-EP-2019-156 ; LHCB-PAPER-2019-018.
- 2019. - 18 p.
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2019-08-12
16:19
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 $275~p\mathrm{b}^{-1}$. [...]
arXiv:1908.03099 ; CERN-EP-2019-150 ; LHCb-PAPER-2018-049.
- 2019. - 34 p.
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2019-07-26
12:37
Measurement of CP violation in the $B_s^0\rightarrow\phi\phi$ decay and search for the $B^0\rightarrow\phi\phi$ decay / LHCb Collaboration
A measurement of the time-dependent CP-violating asymmetry in $B_s^0\rightarrow\phi\phi$ decays is presented. [...]
arXiv:1907.10003 ; LHCb-PAPER-2019-019 ; CERN-EP-2019-121 ; LHCB-PAPER-2019-019.
- 2019. - 34 p.
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2019-07-18
17:03
Precision measurement of the $\Lambda_c^+$, $\Xi_c^+$ and $\Xi_c^0$ baryon lifetimes / LHCb Collaboration
We report measurements of the lifetimes of the $\Lambda_c^+$, $\Xi_c^+$ and $\Xi_c^0$ charm baryons using proton-proton collision data at center-of-mass energies of 7 and 8 TeV, corresponding to an integrated luminosity of 3.0 fb$^{-1}$, collected by the LHCb experiment. The charm baryons are reconstructed through the decays $\Lambda_c^+\to pK^-\pi^+$, $\Xi_c^+\to pK^-\pi^+$ and $\Xi_c^0\to pK^-K^-\pi^+$, and originate from semimuonic decays of beauty baryons. [...]
arXiv:1906.08350; LHCb-PAPER-2019-008; CERN-EP-2019-122; LHCB-PAPER-2019-008.- 2019-08-02 - 12 p. - Published in : Phys. Rev. D 100 (2019) 032001 Article from SCOAP3: PDF; Fulltext: PDF; Related data file(s): ZIP; Supplementary information: ZIP;

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2019-07-02
10:45
Observation of the $\Lambda_b^0\rightarrow \chi_{c1}(3872)pK^-$ decay / LHCb Collaboration
Using proton-proton collision data, collected with the LHCb detector and corresponding to 1.0, 2.0 and 1.9 fb$^{-1}$ of integrated luminosity at the centre-of-mass energies of 7, 8, and 13 TeV, respectively, the decay $\Lambda_b^0\to \chi_{c1}(3872)pK^-$ with $\chi_{c1}\to J/\psi\pi^+\pi^-$ is observed for the first time. The significance of the observed signal is in excess of seven standard deviations. [...]
arXiv:1907.00954; CERN-EP-2019-131; LHCb-PAPER-2019-023; LHCB-PAPER-2019-023.- 2019-09-03 - 21 p. - Published in : JHEP 1909 (2019) 028 Article from SCOAP3: PDF; Fulltext: LHCb-PAPER-2019-023 - PDF; 1907.00954 - PDF; Related data file(s): ZIP; Supplementary information: ZIP;

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