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PH-EP Articles

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2017-04-15
08:30
Search for dark matter at $\sqrt{s}=13$ TeV in final states containing an energetic photon and large missing transverse momentum with the ATLAS detector / ATLAS Collaboration
Results of a search for physics beyond the Standard Model in events containing an energetic photon and large missing transverse momentum with the ATLAS detector at the Large Hadron Collider are reported. As the number of events observed in data, corresponding to an integrated luminosity of 36.1 $\textrm fb^{-1}$ of proton-proton collisions at a centre-of-mass energy of 13 TeV, is in agreement with the Standard Model expectations, exclusion limits in models where dark-matter candidates are pair-produced are determined. [...]
CERN-EP-2017-044; arXiv:1704.03848.- Geneva : CERN, 2017-06-14 - 45 p. - Published in : Eur. Phys. J. C 77 (2017) 393 Fulltext: PDF;

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2017-04-11
20:53
Search for t t-bar resonances in highly boosted lepton+jets and fully hadronic final states in proton-proton collisions at sqrt(s) = 13 TeV / CMS Collaboration
A search for the production of heavy resonances decaying into top quark-antiquark pairs is presented. The analysis is performed in the lepton+jets and fully hadronic channels using data collected in proton-proton collisions at $ \sqrt{s}=13 $ TeV using the CMS detector at the LHC, corresponding to an integrated luminosity of 2.6 fb$^{−1}$. [...]
CMS-B2G-16-015; CERN-EP-2017-049; arXiv:1704.03366.- Geneva : CERN, 2017-07-03 - 47 p. - Published in : JHEP 07 (2017) 001 Article from SCOAP3: PDF; Fulltext: PDF; Preprint: PDF; External link: FERMILABPUB

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2017-03-29
21:26
Search for new physics with dijet angular distributions in proton-proton collisions at $\sqrt{s} = $ 13 TeV / CMS Collaboration
A search is presented for extra spatial dimensions, quantum black holes, and quark contact interactions in measurements of dijet angular distributions in proton-proton collisions at $\sqrt{s} = $ 13 TeV. The data were collected with the CMS detector at the LHC and correspond to an integrated luminosity of 2.6 fb$^{-1}$. [...]
CMS-EXO-15-009; CERN-EP-2017-047; arXiv:1703.09986.- Geneva : CERN, 2017-07-05 - 34 p. - Published in : JHEP 07 (2017) 013 Article from SCOAP3: PDF; Fulltext: PDF; Preprint: PDF; External link: FERMILABPUB

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2017-03-20
12:28
Measurement of the $B^0_s\to\mu^+\mu^-$ branching fraction and effective lifetime and search for $B^0\to\mu^+\mu^-$ decays / LHCb Collaboration
A search for the rare decays $B^0_s\to\mu^+\mu^-$ and $B^0\to\mu^+\mu^-$ is performed at the LHCb experiment using data collected in $pp$ collisions corresponding to a total integrated luminosity of 4.4 fb$^{-1}$. An excess of $B^0_s\to\mu^+\mu^-$ decays is observed with a significance of 7.8 standard deviations, representing the first observation of this decay in a single experiment. [...]
CERN-EP-2017-041; LHCB-PAPER-2017-001; CERN-EP-2017-041-LHCB-PAPER-2017-001; arXiv:1703.05747.- Geneva : CERN, 2017-05-11 - 19 p. - Published in : Phys. Rev. Lett. 118 (2017) 191801 APS Open Access Article: PDF; Fulltext: 10.1103_PhysRevLett.118.191801 - PDF; arXiv:1703.05747 - PDF; Related data file(s): ZIP; Related supplementary data file(s): ZIP;

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2017-03-18
22:59
Search for anomalous couplings in boosted $\mathrm{ WW/WZ }\to\ell\nu\mathrm{ q \bar{q} }$ production in proton-proton collisions at $\sqrt{s} =$ 8 TeV / CMS Collaboration
This Letter presents a search for new physics manifested as anomalous triple gauge boson couplings in WW and WZ diboson production in proton-proton collisions. The search is performed using events containing a W boson that decays leptonically and a W or Z boson whose decay products are merged into a single reconstructed jet. [...]
CMS-SMP-13-008; CERN-EP-2017-029; arXiv:1703.06095.- Geneva : CERN, 2017-09-10 - 30 p. - Published in : Phys. Lett. B 772 (2017) 21-42 Article from SCOAP3: PDF; Fulltext: PDF;

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2017-03-18
22:47
Measurement of the jet mass in highly boosted $\mathrm{ t \bar{t} }$ events from pp collisions at $\sqrt{s}=$ 8 TeV / CMS Collaboration
The first measurement of the jet mass $m_{\text{jet}}$ of top quark jets produced in $\mathrm{ t \bar{t} }$ events from pp collisions at $\sqrt{s}=$ 8 TeV is reported for the jet with the largest transverse momentum $p_{\mathrm{T}}$ in highly boosted hadronic top quark decays. The data sample, collected with the CMS detector, corresponds to an integrated luminosity of 19.7 fb$^{-1}$. [...]
CMS-TOP-15-015; CERN-EP-2017-018; arXiv:1703.06330.- Geneva : CERN, 2017-07-14 - 42 p. - Published in : Eur. Phys. J. C 77 (2017) 467 Article from SCOAP3: PDF; Preprint: PDF;

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2017-03-10
11:05
Observation of the decay $B_{s}^{0} \to \eta_{c} \phi$ and evidence for $B_{s}^{0} \to \eta_{c} \pi^{+} \pi^{-} $ / LHCb Collaboration
A study of $B^{0}_{s} \to \eta_{c} \phi$ and $B^{0}_{s} \to \eta_{c} \pi^{+}\pi^{-}$ decays is performed using $pp$ collision data corresponding to an integrated luminosity of 3.0$\,\rm fb^{-1}$, collected with the LHCb detector in Run~1 of the LHC. The observation of the decay $B^{0}_{s} \to \eta_{c} \phi$ is reported, where the $\eta_{c}$ meson is reconstructed in the $p\bar p$, $K^+K^-\pi^+\pi^-$, $\pi^+\pi^-\pi^+\pi^-$ and $K^+K^-K^+K^-$ decay modes and the $\phi(1020)$ in the $K^+ K^-$ decay mode. [...]
CERN-EP-2017-026; LHCB-PAPER-2016-056; arXiv:1702.08048.- 2017-07-05 - 30 p. - Published in : JHEP 07 (2017) 021 Fulltext: PDF;

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2017-03-09
08:59
Search for the decays $B_s^0\to\tau^+\tau^-$ and $B^0\to\tau^+\tau^-$ / LHCb Collaboration
A search for the rare decays $B_s^0\to\tau^+\tau^-$ and $B^0\to\tau^+\tau^-$ is performed using proton$-$proton collision data collected with the LHCb detector. The data sample corresponds to an integrated luminosity of 3fb$^{-1}$ collected in 2011 and 2012. [...]
CERN-EP-2017-034; LHCB-PAPER-2017-003; arXiv:1703.02508.- Geneva : CERN, 2017-06-21 - 21 p. - Published in : Phys. Rev. Lett. 118 (2017) 251802 Fulltext: 10.1103_PhysRevLett.118.251802 - PDF; arXiv:1703.02508 - PDF; Related data file(s): ZIP; Related supplementary data file(s): ZIP;

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2017-03-07
21:17
Measurement of the top quark mass using single top quark events in proton-proton collisions at $\sqrt{s}= $ 8 TeV / CMS Collaboration
A measurement of the top quark mass is reported in events containing a single top quark produced via the electroweak $t$ channel. The analysis is performed using data from proton-proton collisions collected with the CMS detector at the LHC at a centre-of-mass energy of 8 TeV, corresponding to an integrated luminosity of 19.7 fb$^{-1}$. [...]
CMS-TOP-15-001; CERN-EP-2017-012; arXiv:1703.02530.- Geneva : CERN, 2017 - 36 p. - Published in : Eur. Phys. J. C 77 (2017) 354 Fulltext: PDF;

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2017-03-05
23:20
Measurement of double-differential cross sections for top quark pair production in pp collisions at $\sqrt{s} = $ 8 TeV and impact on parton distribution functions / CMS Collaboration
Normalized double-differential cross sections for top quark pair ($ \mathrm{ t \bar{t} } $) production are measured in pp collisions at a centre-of-mass energy of 8 TeV with the CMS experiment at the LHC. The analyzed data correspond to an integrated luminosity of 19.7 fb$^{-1}$. [...]
CMS-TOP-14-013; CERN-EP-2017-030; arXiv:1703.01630.- Geneva : CERN, 2017-07-11 - 64 p. - Published in : Eur. Phys. J. C 77 (2017) 459 Fulltext: PDF;

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