PH-EP Articles

Ultimi arrivi:
2016-12-16
09:33
 Measurement of the $b$-quark production cross-section in 7 and 13 TeV $pp$ collisions / LHCb Collaboration Measurements of the cross-section for producing $b$ quarks in the reaction $pp \to b\overline{b}X$ are reported in $7$ and $13 TeV$ collisions at the LHC as a function of the pseudorapidity $\eta$ in the range $2<\eta<5$ covered by the acceptance of the LHCb experiment. The measurements are done using semileptonic decays of b-flavored hadrons decaying into a ground-state charmed hadron in association with a muon. [...] arXiv:1612.05140; LHCB-PAPER-2016-031; CERN-EP-2016-201.- Geneva : CERN, 2017 - 21 p. - Published in : Phys. Rev. Lett. 118 (2017) 052002 Fulltext: arXiv:1612.05140 - PDF; 10.1103_PhysRevLett.118.052002 - PDF; Related data file(s): ZIP;

2016-12-09
07:44
 Observation of the decay $\Xi_b^- \to p K^-K^-$ / LHCb Collaboration Decays of the $\Xi_b^-$ and $\Omega_b^-$ baryons to the charmless final states $p h^{-}h^{\prime -}$, where $h^{(\prime)}$ denotes a kaon or pion, are searched for with the LHCb detector. The analysis is based on a sample of proton-proton collision data collected at centre-of-mass energies $\sqrt{s} = 7$ and $8 TeV$, corresponding to an integrated luminosity of $3 {\rm fb}^{-1}$. [...] CERN-EP-2016-294; LHCB-PAPER-2016-050; arXiv:1612.02244; LHCB-PAPER-2016-050; CERN-EP-2016-294.- Geneva : CERN, 2017 - 11 p. - Published in : Phys. Rev. Lett. 118 (2017) 071801 Fulltext: 10.1103_PhysRevLett.118.071801 - PDF; arXiv:1612.02244 - PDF; Related data file(s): TAR.GZ;

2016-11-12
22:22
 Search for dijet resonances in proton-proton collisions at $\sqrt{s}=$ 13 TeV and constraints on dark matter and other models / CMS Collaboration A search is presented for narrow resonances decaying to dijet final states in proton-proton collisions at $\sqrt{s}=$ 13 TeV using data corresponding to an integrated luminosity of 12.9 fb$^{-1}$. The dijet mass spectrum is well described by a smooth parameterization and no significant evidence for the production of new particles is observed. [...] arXiv:1611.03568; CERN-EP-2016-277; CMS-EXO-16-032.- Geneva : CERN, 2017 - 32 p. - Published in : Phys. Lett. B xx (2017) xx Fulltext: PDF; External link: Preprint

2016-11-10
07:44
 Measurement of the CKM angle $\gamma$ from a combination of LHCb results / LHCb collaboration A combination of measurements sensitive to the CKM angle $\gamma$ from LHCb is performed. The inputs are from analyses of time-integrated $B^{+}\rightarrow DK^+$, $B_{d}^{0} \rightarrow D K^{*0}$, $B_{d} \rightarrow D K^+ \pi^-$ and $B^{+} \rightarrow D K^+\pi^+\pi^-$ tree-level decays. [...] arXiv:1611.03076; LHCB-PAPER-2016-032; CERN-EP-2016-270.- Geneva : CERN, 2016 - 58 p. - Published in : J. High Energy Phys. 12 (2016) 087 Fulltext: PDF; Related data file(s): ZIP; Springer Open Access article: PDF;

2016-10-31
19:46
 W and Z boson production in p–Pb collisions at $\sqrt{s_{\rm NN}}=5.02$ TeV / ALICE collaboration The W and Z boson production was measured via the muonic decay channel in proton-lead collisions at $\sqrt{s_{\rm NN}}=5.02$ TeV at the Large Hadron Collider with the ALICE detector. The measurement covers backward ($-4.46 < y_{\rm cms} < 2.96$) and forward ($2.03 < y_{\rm cms} < 3.53$) rapidity regions, corresponding to Pb-going and p-going directions, respectively. [...] CERN-EP-2016-278; arXiv:1611.03002; CERN-EP-2016-278.- Geneva : CERN, 2016 - 23 p. - Published in : J. High Energy Phys. 02 (2017) 077 Draft (restricted): PDF; Fulltext: PDF; Springer Open Access article: PDF;

2016-10-31
09:06
 Search for magnetic monopoles with the MoEDAL forward trapping detector in 13 TeV proton-proton collisions at the LHC / The MoEDAL collaboration MoEDAL is designed to identify new physics in the form of long-lived highly-ionising particles produced in high-energy LHC collisions. Its arrays of plastic nuclear-track detectors and aluminium trapping volumes provide two independent passive detection techniques. [...] CERN-EP-2016-282; arXiv:1611.06817.- Geneva : CERN, 2017 - 6. - Published in : Phys. Rev. Lett. 118 (2017) 061801 Draft (restricted): PDF; Fulltext: 10.1103_PhysRevLett.118.061801 - PDF; arXiv:1611.06817 - PDF; CERN-EP-2016-282 - PDF; External link: Preprint

2016-10-28
17:18
 Measurements of $\psi(2S)$ and $X(3872) \to J/\psi\pi^+\pi^-$ production in $pp$ collisions at $\sqrt{s} = 8$ TeV with the ATLAS detector / ATLAS Collaboration Differential cross sections are presented for the prompt and non-prompt production of the hidden-charm states $X(3872)$ and $\psi(2S)$, in the decay mode $J/\psi \pi^+\pi^-$, measured using 11.4 fb$^{-1}$ of $pp$ collisions at $\sqrt{s} = 8$ TeV by the ATLAS detector at the LHC. The ratio of cross-sections $X(3872)/\psi(2S)$ is also given, separately for prompt and non-prompt components, as well as the non-prompt fractions of $X(3872)$ and $\psi(2S)$. [...] CERN-EP-2016-193; arXiv:1610.09303.- Geneva : CERN, 2017 - 42 p. - Published in : J. High Energy Phys. 01 (2017) 117 Fulltext: PDF;

2016-10-28
14:19
 Measurement of the $\pi^0$ electromagnetic transition form factor slope / NA62 Collaboration The NA62 experiment collected a large sample of charged kaon decays in 2007 with a highly efficient trigger for decays into electrons. A measurement of the $\pi^{0}$ electromagnetic transition form factor slope parameter from $1.11\times10^{6}$ fully reconstructed $K^\pm \to \pi^\pm \pi^0_D, \; \pi^0_D \to e^+ e^- \, \gamma$ events is reported. [...] CERN-EP-2016-323; arXiv:1612.08162.- Geneva : CERN, 2017 - 12 p. - Published in : Phys. Lett. B 768 (2017) 38-45 Article from SCOAP3: PDF; Draft (restricted): PDF; Fulltext: CERN-EP-2016-323 - PDF; arXiv:1612.08162 - PDF;

2016-10-27
08:36
 Observation of the annihilation decay mode $B^{0}\to K^{+}K^{-}$ / LHCb collaboration A search for the $B^{0}\to K^{+}K^{-}$ decay is performed using $pp$-collision data collected by LHCb. The data set corresponds to integrated luminosities of 1 and 2 fb$^{-1}$ at center-of-mass energies of 7 and 8 TeV, respectively. [...] LHCB-PAPER-2016-036; CERN-EP-2016-255; arXiv:1610.08288; LHCB-PAPER-2016-036; CERN-EP-2016-255.- Geneva : CERN, 2017 - 16 p. - Published in : Phys. Rev. Lett. 118 (2017) 081801 Fulltext: 10.1103_PhysRevLett.118.081801 - PDF; arXiv:1610.08288 - PDF; Related data file(s): ZIP; Related supplementary data file(s): ZIP; External link: Preprint

2016-10-27
08:35
 Measurement of forward $t\overline{t}$, $W+b\overline{b}$ and $W+c\overline{c}$ production in $pp$ collisions at $\sqrt{s}=8$ TeV / LHCb collaboration The production of $t\overline{t}$, $W+b\overline{b}$ and $W+c\overline{c}$ is studied in the forward region of proton-proton collisions collected at a centre-of-mass energy of 8 TeV by the LHCb experiment, corresponding to an integrated luminosity of 1.98 $\pm$ 0.02 $\mbox{fb}^{-1}$. The $W$ bosons are reconstructed in the decays $W\rightarrow\ell\nu$, where $\ell$ denotes muon or electron, while the $b$ and $c$ quarks are reconstructed as jets. [...] arXiv:1610.08142; LHCB-PAPER-2016-038; CERN-EP-2016-232.- Geneva : CERN, 2017 - 20 p. - Published in : Phys. Lett. B 767 (2017) 110-120 Article from SCOAP3: PDF; Fulltext: PDF; Related data file(s): ZIP; Related supplementary data file(s): ZIP; External link: Preprint