2018-07-18
10:00 |
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Search for $C\!P$ violation in $\Lambda^0_b \to p K^-$ and $\Lambda^0_b \to p \pi^-$ decays
/ LHCb Collaboration
A search for $C\!P$ violation in $\Lambda^0_b \to p K^-$ and $\Lambda^0_b \to p \pi^-$ decays is presented using a sample of $pp$ collisions collected with the LHCb detector and corresponding to an integrated luminosity of 3.0 fb$^{-1}$. [...]
arXiv:1807.06544 ; LHCb-PAPER-2018-025 ; CERN-EP-2018-189 ; LHCB-PAPER-2018-025.
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2018.
00019 Distributions of (top) momentum, (middle) transverse momentum and (bottom) pseudorapidity for (left) protons from \Lb decays and (right) \Lb baryons. The distributions are background-subtracted and normalised to unit area. Below each plot the ratio between the two distributions corresponding to \LbTopK and \LbToppi decays is also shown. - 00014 Distributions of (top) momentum, (middle) transverse momentum and (bottom) pseudorapidity for (left) protons from \Lb decays and (right) \Lb baryons. The distributions are background-subtracted and normalised to unit area. Below each plot the ratio between the two distributions corresponding to \LbTopK and \LbToppi decays is also shown. - 00017 Distributions of (top) momentum, (middle) transverse momentum and (bottom) pseudorapidity for (left) protons from \Lb decays and (right) \Lb baryons. The distributions are background-subtracted and normalised to unit area. Below each plot the ratio between the two distributions corresponding to \LbTopK and \LbToppi decays is also shown. - 00015 Distributions of (top) momentum, (middle) transverse momentum and (bottom) pseudorapidity for (left) protons from \Lb decays and (right) \Lb baryons. The distributions are background-subtracted and normalised to unit area. Below each plot the ratio between the two distributions corresponding to \LbTopK and \LbToppi decays is also shown. - 00018 Distributions of (top) momentum, (middle) transverse momentum and (bottom) pseudorapidity for (left) protons from \Lb decays and (right) \Lb baryons. The distributions are background-subtracted and normalised to unit area. Below each plot the ratio between the two distributions corresponding to \LbTopK and \LbToppi decays is also shown. - 00016 Distributions of (top) momentum, (middle) transverse momentum and (bottom) pseudorapidity for (left) protons from \Lb decays and (right) \Lb baryons. The distributions are background-subtracted and normalised to unit area. Below each plot the ratio between the two distributions corresponding to \LbTopK and \LbToppi decays is also shown. - 00013 Invariant-mass distributions: (top left) $m_{\proton \Km}$, (top right) $m_{\antiproton \Kp}$, (bottom left) $m_{\proton \pim}$ and (bottom right) $m_{\antiproton \pip}$ for candidates passing the (top) \SpK and (bottom) \Sppi selections. The results of the fits are superimposed. - 00011 Invariant-mass distributions: (top left) $m_{\proton \Km}$, (top right) $m_{\antiproton \Kp}$, (bottom left) $m_{\proton \pim}$ and (bottom right) $m_{\antiproton \pip}$ for candidates passing the (top) \SpK and (bottom) \Sppi selections. The results of the fits are superimposed. - 00010 Invariant-mass distributions: (top left) $m_{\proton \Km}$, (top right) $m_{\antiproton \Kp}$, (bottom left) $m_{\proton \pim}$ and (bottom right) $m_{\antiproton \pip}$ for candidates passing the (top) \SpK and (bottom) \Sppi selections. The results of the fits are superimposed. - 00012 Invariant-mass distributions: (top left) $m_{\proton \Km}$, (top right) $m_{\antiproton \Kp}$, (bottom left) $m_{\proton \pim}$ and (bottom right) $m_{\antiproton \pip}$ for candidates passing the (top) \SpK and (bottom) \Sppi selections. The results of the fits are superimposed. - Fulltext - Related data file(s) - Supplementary Information - Fulltext - Fulltext
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2018-07-16
15:53 |
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2018-07-06
10:57 |
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2018-07-06
10:51 |
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2018-06-29
15:46 |
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2018-06-28
12:03 |
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Observation of the decay $\overline{B_s^0} \rightarrow \chi_{c2} K^+ K^- $
/ LHCb Collaboration
The $\overline{B_s^0} \rightarrow \chi_{c2} K^+ K^- $ decay mode is observed and its branching fraction relative to the corresponding $\chi_{c1}$ decay mode, in a $\pm 15 \textrm{MeV}/c^2$ window around the $\phi$ mass, is found to be $$\frac{\mathcal{B}(\overline{B_s^0} \rightarrow \chi_{c2} K^+ K^-) }{ \mathcal{B}(\overline{B_s^0} \rightarrow \chi_{c1} K^+K^-)} = (17.1 \pm 3.1 \pm 0.4 \pm 0.9)\%,$$ where the first uncertainty is statistical, the second systematic and the third due to the knowledge of the branching fractions of radiative $\chi_c$ decays. [...]
LHCb-PAPER-2018-018 ; CERN-EP-2018-160 ; arXiv:1806.10576 ; LHCB-PAPER-2018-018.
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2018. - 20 p, 20 p.
Fulltext - Related data file(s) - Supplementary information
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2018-06-26
11:08 |
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2018-06-21
14:15 |
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2018-06-13
16:55 |
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2018-06-11
15:02 |
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