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2016-07-22
09:59
Measurement of the total cross section from elastic scattering in $pp$ collisions at $\sqrt{s}=8$ TeV with the ATLAS detector / ATLAS Collaboration
A measurement of the total $pp$ cross section at the LHC at $\sqrt{s}=8$ TeV is presented. An integrated luminosity of $500$ $\mu$b$^{-1}$ was accumulated in a special run with high-$\beta^{\star}$ beam optics to measure the differential elastic cross section as a function of the Mandelstam momentum transfer variable $t$. [...]
arXiv:1607.06605; CERN-EP-2016-158.- Geneva : CERN, 2016 - 17 p. - Published in : Phys. Lett. B 761 (2016) 158-178 Elsevier Open Access article: PDF; Fulltext: PDF; External links: Previous draft version; Preprint

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2016-07-14
08:56
Measurement of exclusive $\gamma\gamma\rightarrow W^+W^-$ production and search for exclusive Higgs boson production in $pp$ collisions at $\sqrt{s} = 8$ TeV using the ATLAS detector / ATLAS Collaboration
Searches for exclusively produced $W$ boson pairs in the process $pp(\gamma\gamma) \rightarrow pW^+W^-p$ and exclusively produced Higgs boson in the process $pp(gg) \rightarrow pHp$ have been performed using $e^{\pm}\mu^{\mp}$ final states. These measurements use 20.2 fb$^{-1}$ of $pp$ collisions collected by the ATLAS experiment at a center-of-mass energy $\sqrt{s}=8$ TeV at the LHC. [...]
arXiv:1607.03745; CERN-EP-2016-123.- Geneva : CERN, 2016 - 31 p. - Published in : Phys. Rev. D 94 (2016) 032011 Fulltext: PDF; External links: Preprint; Previous draft version

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2016-07-14
08:56
Search for high-mass new phenomena in the dilepton final state using proton--proton collisions at $\sqrt{s}=13$ TeV with the ATLAS detector / ATLAS Collaboration
A search is conducted for both resonant and non-resonant high-mass new phenomena in dielectron and dimuon final states. The search uses 3.2 fb$^{-1}$ of proton--proton collision data, collected at $\sqrt{s} = 13$ TeV by the ATLAS experiment at the LHC in 2015. [...]
arXiv:1607.03669; CERN-EP-2016-116.- Geneva : CERN, 2016 - 35 p. - Published in : Phys. Lett. B 761 (2016) 372-392 Elsevier Open Access article: PDF; Fulltext: PDF; External links: Preprint; Previous draft version

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2016-07-12
14:44
Search for Higgs and $Z$ Boson Decays to $\phi\,\gamma$ with the ATLAS Detector / ATLAS Collaboration
A search for the decays of the Higgs and $Z$ bosons to a $\phi$ meson and a photon is performed with a $pp$ collision data sample corresponding to an integrated luminosity of $2.7\,\mathrm{fb}^{-1}$ collected at $\sqrt{s}=13\mathrm{TeV}$ with the ATLAS detector at the LHC. No significant excess of events is observed above the background, and 95% confidence level upper limits on the branching fractions of the Higgs and $Z$ boson decays to $\phi\,\gamma$ of $1.4\times10^{-3}$ and $8.3\times10^{-6}$, respectively, are obtained..
CERN-EP-2016-130; arXiv:1607.03400.- Geneva : CERN, 2016 - 9 p. - Published in : Phys. Rev. Lett. 117 (2016) 111802 Fulltext: PDF; External links: Previous draft version; Fulltext

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2016-06-23
08:48
Evidence for exotic hadron contributions to $\Lambda_b^0 \to J/\psi p \pi^-$ decays / LHCb collaboration
A full amplitude analysis of $\Lambda_b^0 \to J/\psi p \pi^-$ decays is performed with a data sample acquired with the LHCb detector from 7 and 8 TeV $pp$ collisions, corresponding to an integrated luminosity of 3 fb$^{-1}$. A significantly better description of the data is achieved when, in addition to the previously observed nucleon excitations $N\to p\pi^-$, either the $P_c(4380)^+$ and $P_c(4450)^+\to J/\psi p$ states, previously observed in $\Lambda_b^0 \to J/\psi p K^-$ decays, or the $Z_c(4200)^-\to J/\psi \pi^-$ state, previously reported in $B^0 \to J/\psi K^+ \pi^-$ decays, or all three, are included in the amplitude models. [...]
arXiv:1606.06999; LHCB-PAPER-2016-015; CERN-EP-2016-151.- Geneva : CERN, 2016 - 33 p. - Published in : Phys. Rev. Lett. 117 (2016) 082003
- Published in : Phys. Rev. Lett. 117 (2016) 109902 APS Open Access Erratum: PDF; APS Open Access article: PDF; Fulltext: PDF; Related data file(s): ZIP; Related supplementary data file(s): ZIP; External link: Preprint

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2016-06-15
11:08
Search for pair production of Higgs bosons in the $b\bar{b}b\bar{b}$ final state using proton-proton collisions at $\sqrt{s} = 13$ TeV with the ATLAS detector / ATLAS Collaboration
A search for Higgs-boson pair production in the $b\bar{b}b\bar{b}$ final state is carried out with 3.2~fb$^{-1}$ of proton--proton collision data collected at $\sqrt{s} = 13$ TeV with the ATLAS detector. The data are consistent with the estimated background and are used to set upper limits on the production cross section of Higgs-boson pairs times branching ratio to $b\bar{b}b\bar{b}$ for both nonresonant and resonant production. [...]
CERN-EP-2016-142; arXiv:1606.04782.- Geneva : CERN, 2016 - 25 p. - Published in : Phys. Rev. D 94 (2016) 052002 Fulltext: PDF; External links: Previous draft version; Fulltext

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2016-06-14
01:01
Search for resonant production of high-mass photon pairs in proton-proton collisions at $\sqrt{s} = $ 8 and 13 TeV / CMS Collaboration
A search for the resonant production of high-mass photon pairs is presented. The analysis is based on samples of proton-proton collision data collected by the CMS experiment at center-of-mass energies of 8 and 13 TeV, corresponding to integrated luminosities of 19.7 and 3.3 fb$^{-1}$, respectively. [...]
arXiv:1606.04093; CMS-EXO-16-018; CERN-EP-2016-154.- Geneva : CERN, 2016 - 36 p. - Published in : Phys. Rev. Lett. 117 (2016) 051802 Fulltext: PDF; External link: Preprint

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2016-06-11
16:42
Search for resonances in diphoton events at $\sqrt{s}$=13 TeV with the ATLAS detector / ATLAS Collaboration
Searches for new resonances decaying into two photons in the ATLAS experiment at the CERN Large Hadron Collider are described. The analysis is based on proton--proton collision data corresponding to an integrated luminosity of 3.2 fb$^{-1}$ at $\sqrt{s} = 13$ TeV recorded in 2015. [...]
CERN-EP-2016-120; arXiv:1606.03833.- Geneva : CERN, 2016 - 32 p. - Published in : J. High Energy Phys. 09 (2016) 001 Fulltext: PDF; Springer Open Access article: PDF; External links: Previous draft version; Fulltext

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2016-06-08
19:32
Measurement of the $t\bar{t}$ production cross-section using $e\mu$ events with b-tagged jets in pp collisions at $\sqrt{s}$=13 TeV with the ATLAS detector / ATLAS Collaboration
This paper describes a measurement of the inclusive top quark pair production cross-section ($\sigma_{t\bar{t}}$) with a data sample of 3.2~fb$^{-1}$ of proton--proton collisions at a centre-of-mass energy of $\sqrt{s}$=13 TeV, collected in 2015 by the ATLAS detector at the LHC. This measurement uses events with an opposite-charge electron--muon pair in the final state. [...]
CERN-EP-2016-088; arXiv:1606.02699.- Geneva : CERN, 2016 - 19 p. - Published in : Phys. Lett. B 761 (2016) 136 Elsevier Open Access article: PDF; Fulltext: PDF; External links: Previous draft version; Fulltext

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2016-06-07
20:55
Measurements of the Higgs boson production and decay rates and constraints on its couplings from a combined ATLAS and CMS analysis of the LHC $pp$ collision data at $\sqrt{s}=$ 7 and 8 TeV / ATLAS and CMS Collaborations
Combined ATLAS and CMS measurements of the Higgs boson production and decay rates, as well as constraints on its couplings to vector bosons and fermions, are presented. The combination is based on the analysis of five production processes, namely gluon fusion, vector boson fusion, and associated production with a $W$ or a $Z$ boson or a pair of top quarks, and of the six decay modes $H \to ZZ, WW$, $\gamma\gamma, \tau\tau, bb$, and $\mu\mu$. [...]
arXiv:1606.02266; CERN-EP-2016-100; ATLAS-HIGG-2015-07; CMS-HIG-15-002.- Geneva : CERN, 2016 - 70 p. - Published in : J. High Energy Phys. 08 (2016) 045 Fulltext: PDF; Springer Open Access article: PDF; External links: Previous draft version; Fulltext

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