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PH-EP Articles

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2016-09-08
23:41
Decomposing transverse momentum balance contributions for quenched jets in PbPb collisions at $\sqrt{s_\mathrm{NN}} = $ 2.76 TeV / CMS Collaboration
Interactions between jets and the quark-gluon plasma produced in heavy ion collisions are studied via the angular distributions of summed charged-particle transverse momenta ($p_{\mathrm{T}}$) with respect to both the leading and subleading jet axes in high-$p_{\mathrm{T}}$ dijet events. The contributions of charged particles in different momentum ranges to the overall event $p_{\mathrm{T}}$ balance are decomposed into short-range jet peaks and a long-range azimuthal asymmetry in charged-particle $p_{\mathrm{T}}$. [...]
arXiv:1609.02466; CERN-EP-2016-199; CMS-HIN-15-011.- Geneva : CERN, 2016 - 43 p. - Published in : J. High Energy Phys. 11 (2016) 055 Fulltext: PDF; Springer Open Access article: PDF; External link: Preprint

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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. The new measurements exploit associated charged hadrons down to $0.5~\mathrm{GeV}/c$, which significantly extends our previous measurement that only used charged hadrons above $3~\mathrm{GeV}/c$. [...]
arXiv:1608.07201; CERN-EP-2016-195.- Geneva : CERN, 2016 - 26 p. - Published in : Phys. Lett. B 763 (2016) 238-250 Elsevier Open Access article: PDF; Fulltext: PDF; External link: Preprint

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2016-08-09
19:59
Measurement of $W^+W^-$ production in association with one jet in proton--proton collisions at $\sqrt{s} =8$ TeV with the ATLAS detector / ATLAS Collaboration
The production of $W$ boson pairs in association with one jet in $pp$ collisions at $\sqrt{s} = 8$ TeV is studied using data corresponding to an integrated luminosity of 20.3 fb$^{-1}$ collected by the ATLAS detector during 2012 at the CERN Large Hadron Collider. The cross section is measured in a fiducial phase-space region defined by the presence of exactly one electron and one muon, missing transverse momentum and exactly one jet with a transverse momentum above 25 GeV and a pseudorapidity of $|\eta|<4.5$. [...]
arXiv:1608.03086; CERN-EP-2016-186.- Geneva : CERN, 2016 - 20 p. - Published in : Phys. Lett. B 763 (2016) 114-133 Elsevier Open Access article: PDF; Fulltext: PDF; External links: Previous draft version; Preprint

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2016-08-08
10:35
Search for dark matter produced in association with a hadronically decaying vector boson in pp collisions at $\sqrt(s)$=13 TeV with the ATLAS detector / ATLAS Collaboration
A search is presented for dark matter produced in association with a hadronically decaying W or Z boson using 3.2 /fb of pp collisions at $\sqrt{s}$=13 TeV recorded by the ATLAS detector at the Large Hadron Collider. Events with a hadronic jet compatible with a W or Z boson and with large missing transverse momentum are analysed. [...]
CERN-EP-2016-180; arXiv:1608.02372.- Geneva : CERN, 2016 - 10 p. - Published in : Phys. Lett. B 763 (2016) 251 Elsevier Open Access article: PDF; Fulltext: PDF; External links: Previous draft version; Fulltext

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2016-08-05
08:00
Measurement of forward $W\to e\nu$ production in $pp$ collisions at $\sqrt{s}=8$ TeV / LHCb collaboration
A measurement of the cross-section for $W \to e\nu$ production in $pp$ collisions is presented using data corresponding to an integrated luminosity of $2\,$fb$^{-1}$ collected by the LHCb experiment at a centre-of-mass energy of $\sqrt{s}=8\,$TeV. The electrons are required to have more than $20\,$GeV of transverse momentum and to lie between 2.00 and 4.25 in pseudorapidity. [...]
arXiv:1608.01484; LHCB-PAPER-2016-024; CERN-EP-2016-179.- Geneva : CERN, 2016 - 29 p. - Published in : J. High Energy Phys. 10 (2016) 030 Fulltext: PDF; Related data file(s): ZIP; Related supplementary data file(s): ZIP; Springer Open Access article: PDF; External link: Preprint

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2016-08-04
16:04
Amplitude analysis of $B^- \to D^+ \pi^- \pi^-$ decays / LHCb Collaboration
The Dalitz plot analysis technique is used to study the resonant substructures of $B^- \to D^+ \pi^- \pi^-$ decays in a data sample corresponding to 3.0 fb$^-1$ of $pp$ collision data recorded by the LHCb experiment during 2011 and 2012. A model-independent analysis of the angular moments demonstrates the presence of resonances with spins 1, 2 and 3 at high $D^+\pi^-$ mass. [...]
arXiv:1608.01289; LHCB-PAPER-2016-026; CERN-EP-2016-184.- Geneva : CERN, 2016 - 39 p. - Published in : Phys. Rev. D 94 (2016) 072001 APS Open Access article: PDF; Fulltext: PDF; Related data file(s): ZIP; External link: Preprint

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2016-08-03
10:31
Dark matter interpretations of ATLAS searches for the electroweak production of supersymmetric particles in $\sqrt{s} = 8$ TeV proton-proton collisions / ATLAS Collaboration
A selection of searches by the ATLAS experiment at the LHC for the electroweak production of SUSY particles are used to study their impact on the constraints on dark matter candidates. The searches use $20\,{\rm fb}^{-1}$ of proton-proton collision data at $\sqrt{s}=8$ TeV. [...]
arXiv:1608.00872; CERN-EP-2016-165.- Geneva : CERN, 2016 - 25 p. - Published in : J. High Energy Phys. 09 (2016) 175 Fulltext: PDF; Springer Open Access article: PDF; External links: Preprint; Previous draft version

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2016-08-02
07:53
Search for structure in the $B_s^0\pi^\pm$ invariant mass spectrum / LHCb collaboration
The $B_s^0\pi^\pm$ invariant mass distribution is investigated in order to search for possible exotic meson states. The analysis is based on a data sample recorded with the LHCb detector corresponding to $3$ fb$^{-1}$ of $pp$ collision data at $\sqrt{s} = 7$ and $8$ TeV. [...]
arXiv:1608.00435; LHCB-PAPER-2016-029; CERN-EP-2016-189.- Geneva : CERN, 2016 - 16 p. - Published in : Phys. Rev. Lett. 117 (2016) 152003 APS Open Access article: PDF; Fulltext: PDF; Related data file(s): ZIP; Related supplemenrary data file(s): ZIP; External link: Preprint

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2016-07-29
17:26
Measurement of the ZZ production cross section and $\mathrm{ Z } \to {\ell^+\ell^-\ell^{\prime+}\ell^{\prime-}} $ branching fraction in pp collisions at $ \sqrt{s} = $ 13 TeV / CMS Collaboration
Four-lepton production in proton-proton collisions, ${\mathrm{ p }\mathrm{ p }} \to \left(\mathrm{Z} / \gamma^*\right)\left(\mathrm{Z}/ \gamma^*\right) \to {\ell^+\ell^-\ell^{\prime+}\ell^{\prime-}} $, where $\ell, \ell' = \mathrm{ e }$ or $\mu$, is studied at a center-of-mass energy of 13 TeV with the CMS detector at the LHC. The data sample corresponds to an integrated luminosity of 2.6 fb$^{-1}$. [...]
arXiv:1607.08834; CMS-SMP-16-001; CERN-EP-2016-174.- Geneva : CERN, 2016 - 24. - Published in : Phys. Lett. B 763 (2016) 280 Elsevier Open Access article: PDF; Fulltext: PDF; External link: Preprint

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2016-07-27
13:31
Search for new phenomena in different-flavour high-mass dilepton final states in \boldmath{$pp$} collisions at $\sqrt{s}=13$ TeV with the ATLAS detector / ATLAS Collaboration
A search is performed for a heavy particle decaying into different flavour dilepton pairs ($e\mu$, $e\tau$ or $\mu\tau$), using 3.2 $fb^{-1}$ of proton--proton collision data at $\sqrt{s}=13$ TeV collected in 2015 by the ATLAS detector at the Large Hadron Collider. No excess over the Standard Model prediction is observed. [...]
arXiv:1607.08079; CERN-EP-2016-168.- Geneva : CERN, 2016 - 42 p. - Published in : Eur. Phys. J. C 76 (2016) 541 Fulltext: PDF; Springer Open Access article: PDF; External links: Previous draft version; Preprint

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