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EP Preprints

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2016-09-26
07:23
Sivers asymmetry extracted in SIDIS at the hard scale of the Drell-Yan process at COMPASS / Adolph, C ; Aghasyan, M ; Akhunzyanov, R ; Alexeev, M G ; Alexeev, G D ; Amoroso, A ; Andrieux, V ; Anfimov, N V ; Anosov, V ; Augsten, K et al.
Proton transverse-spin azimuthal asymmetries are extracted from the COMPASS 2010 semi-inclusive hadron measurements in deep inelastic muon-nucleon scattering in those four regions of the photon virtuality $Q^2$, which correspond to the four regions of the di-muon mass $\sqrt{Q^2}$ used in the ongoing analysis of the COMPASS Drell-Yan measurements. [...]
arXiv:1609.07374 ; CERN-EP-2016--250. - 2016. - 13 p.
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2016-09-22
08:20
Azimuthal asymmetries of charged hadrons produced in high-energy muon scattering off longitudinally polarised deuterons / Adolph, C ; Aghasyan, M ; Akhunzyanov, R ; Alexeev, M G ; Alexeev, G D ; Amoroso, A ; Andrieux, V ; Anfimov, N V ; Anosov, V ; Augsten, K et al.
Single hadron azimuthal asymmetries in the cross sections of positive and negative hadron production in muon semi-inclusive deep inelastic scattering off longitudinally polarised deuterons are determined using the 2006 COMPASS data and also all deuteron COMPASS data. [...]
arXiv:1609.06062 ; CERN-EP-2016-245. - 2016. - 15 p.
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2016-09-19
10:32
Measurement of matter-antimatter differences in beauty baryon decays / LHCb Collaboration
Differences in the behaviour of matter and antimatter have been observed in $K$ and $B$ meson decays, but not yet in any baryon decay. [...]
arXiv:1609.05216 ; LHCB-PAPER-2016-030 ; CERN-EP-2016-212. - 2016. - 19 p.
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2016-09-16
07:42
Differential branching fraction and angular moments analysis of the decay $B^0 \to K^+ \pi^- \mu^+ \mu^-$ in the $K^*_{0,2}(1430)^0$ region / LHCb collaboration
Measurements of the differential branching fraction and angular moments of the decay $B^0 \to K^+ \pi^- \mu^+ \mu^-$ in the $K^*_{0,2}(1430)^0$ in the $K^+\pi^-$ invariant mass range $1330 < m (K^+ \pi^-) <1530~ \text{MeV}/c^2$ are presented. [...]
arXiv:1609.04736 ; CERN-EP-2016-215 ; LHCB-PAPER-2016-025. - 2016. - 25 p.
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2016-09-13
09:04
Search for Higgs-like bosons decaying into long-lived exotic particles / LHCb collaboration
A search is presented for massive long-lived particles, in the 20-60 GeV mass range with lifetimes between 5 and 100 ps. [...]
arXiv:1609.03124 ; LHCB-PAPER-2016-014 ; CERN-EP-2016-188. - 2016. - 29 p.
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2016-09-09
08:33
First experimental study of photon polarization in radiative $B^{0}_{s}$ decays / LHCb collaboration
The polarization of photons produced in radiative $B^{0}_{s}$ decays is studied for the first time. [...]
arXiv:1609.02032 ; LHCB-PAPER-2016-034 ; CERN-EP-2016-210. - 2016. - 15 p.
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2016-08-31
14:19
Search for Dark Matter with LHC proton Beam Dump / Kumar, Ashok (Delhi U.) ; Sharma, Archana (CERN)
Dark Matter (DM) comprising particles in the mass range of a few MeV to GeV is waiting to be explored, given the many theoretical models accommodating cosmological abundance. [...]
CERN-OPEN-2016-006. - 2016. - 7 p.
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2016-08-27
08:50
Jet-like correlations with neutral pion triggers in pp and central Pb-Pb collisions at 2.76 TeV / ALICE Collaboration
We present measurements of two-particle correlations with neutral pion trigger particles of transverse momenta $8 < p_{\mathrm{T}}^{\rm trig} < 16~\mathrm{GeV}/c$ and associated charged particles of $0.5 < p_{\mathrm{T}}^{\rm assoc} < 10~\mathrm{GeV}/c$ versus the azimuthal angle difference $\Delta\varphi$ at midrapidity in pp and central Pb-Pb collisions at $\sqrt{s_{\mathrm{NN}}}=2.76$ TeV with ALICE. [...]
arXiv:1608.07201 ; CERN-EP-2016-195. - 2016. - 26 p.
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2016-08-25
08:23
Multiplicities of charged kaons from deep-inelastic muon scattering off an isoscalar target / Adolph, C ; Agarwala, J ; Aghasyan, M ; Akhunzyanov, R ; Alexeev, M G ; Alexeev, G D ; Amoroso, A ; Andrieux, V ; Anfimov, N V ; Anosov, V et al.
Precise measurements of charged-kaon multiplicities in deep inelastic scattering were performed. [...]
arXiv:1608.06760 ; CERN-EP-2016--206. - 2016. - 10 p.
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2016-08-24
08:11
Measurement of $CP$ violation in $B^0 \!\rightarrow D^+ D^-$ decays / LHCb collaboration
The $C\!P$ violation observables $S$ and $C$ in the decay channel $B^0 \!\rightarrow D^+ D^-$ are determined from a sample of proton-proton collisions at centre-of-mass energies of $7$ and $8$ TeV, collected by the LHCb experiment and corresponding to an integrated luminosity of $3~ {\text {fb}}^{-1}$. [...]
arXiv:1608.06620 ; LHCB-PAPER-2016-037 ; CERN-EP-2016-203. - 2016. - 17 p.
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