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2014-04-08
22:59
Measurement of the ratio $B(t \to Wb)/B(t \to Wq)$ in pp collisions at $\sqrt{s}$ = 8 TeV / CMS Collaboration
The ratio of the top-quark branching fractions $R = B(t \to Wb)/B(t \to Wq)$, where the denominator includes the sum over all down-type quarks (q = b, s, d), is measured in the $t\bar{t}$ dilepton final state with proton-proton collision data at $\sqrt{s}$ = 8 TeV from an integrated luminosity of 19.7 inverse-femtobarns, collected with the CMS detector. [...]
arXiv:1404.2292 ; CMS-TOP-12-035 ; CERN-PH-EP-2014-052.
- 2014. - 37 p.
Preprint

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2014-04-05
18:49
Search for invisible decays of Higgs bosons in the vector boson fusion and associated ZH production modes / CMS Collaboration
A search for invisible decays of Higgs bosons is performed using the vector boson fusion and associated ZH production modes. [...]
arXiv:1404.1344 ; CMS-HIG-13-030 ; CERN-PH-EP-2014-051.
- 2014. - 51 p.
Preprint

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2014-04-01
04:36
Angular analysis of charged and neutral $B \to K \mu^+\mu^-$ decays / LHCb collaboration
The angular distributions of the rare decays $B^+ \to K^+\mu^+\mu^-$ and $B^0 \to K^0_{\rm\scriptscriptstyle S}\mu^+\mu^-$ are studied with data corresponding to 3$~$fb$^{-1}$ of integrated luminosity, collected in proton-proton collisions at 7 and 8$~$TeV centre-of-mass energies with the LHCb detector. [...]
arXiv:1403.8045 ; LHCB-PAPER-2014-007 ; CERN-PH-EP-2014-056.
- 2014. - 27 p.
Preprint - Related data file(s) - Related supplementary data file(s)

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2014-04-01
04:36
Differential branching fractions and isospin asymmetries of $B \to K^{(*)}\mu^+\mu^+$ decays / LHCb collaboration
The isospin asymmetries of $B \to K\mu^+\mu^-$ and $B \to K^{*}\mu^+\mu^-$ decays and the partial branching fractions of the $B^0 \to K^0\mu^+\mu^-$, $B^+ \to K^+\mu^+\mu^-$ and $B^+ \to K^{*+}\mu^+\mu^-$ decays are measured as functions of the dimuon mass squared, $q^2$. [...]
arXiv:1403.8044 ; LHCB-PAPER-2014-006 ; CERN-PH-EP-2014-055.
- 2014. - 23 p.
Preprint - Related data file(s) - Related supplementary data file(s)

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2014-04-01
00:12
Search for dark matter in events with a $Z$ boson and missing transverse momentum in $pp$ collisions at $\sqrt{s}=8$ TeV with the ATLAS detector / ATLAS Collaboration
A search is presented for production of dark matter particles recoiling against a leptonically decaying $Z$ boson in 20.3 fb$^{-1}$ of $pp$ collisions at $\sqrt{s}=8$ TeV with the ATLAS detector at the Large Hadron Collider. [...]
arXiv:1404.0051 ; CERN-PH-EP-2013-231.
- 2014. - 8 p.
Previous draft version - Preprint

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2014-03-28
16:24
Measurement of the t-channel single-top-quark production cross section and of the |$V_{tb}$| CKM matrix element in pp collisions at $\sqrt{s}$ = 8 TeV / CMS Collaboration
Measurements are presented of the t-channel single-top-quark production cross section in proton-proton collisions at $\sqrt{s}$ = 8 TeV. [...]
arXiv:1403.7366 ; CMS-TOP-12-038-003 ; CERN-PH-EP-2014-032.
- 2014. - 41 p.
Additional information for the analysis - CMS AuthorList - Full text

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2014-03-25
10:14
Search for top quark decays $t \rightarrow qH$ with $H \to \gamma\gamma$ using the ATLAS detector / ATLAS Collaboration
A search is performed for flavour-changing neutral currents in the decay of a top quark to an up-type ($c, u$) quark and a Higgs boson, where the Higgs boson decays to two photons. [...]
arXiv:1403.6293 ; CERN-PH-EP-2014-036.
- 2014. - 45 p.
Previous draft version - Preprint

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2014-03-25
03:44
Transverse momentum distribution and nuclear modification factor of forward neutral pion in proton–lead collisions at $\sqrt{s_{NN}}$= 5.02 TeV / LHCf Collaboration
The transverse momentum ($p_\text{T}$) distribution for inclusive neutral pions in the very forward rapidity region has been measured, with the Large Hadron Collider forward detector (LHCf), in proton--lead collisions at nucleon-nucleon center-of-mass energies of $\sqrt{s_{NN}} = 5.02$TeV at the LHC. The $p_\text{T}$ spectra obtained in the rapidity range $-11.0 < y_\text{lab} < -8.9$ and $0 < p_\text{T} < 0.6$GeV (in the detector reference frame) show a strong suppression of the production of neutral pions after taking into account ultra-peripheral collisions. [...]
arXiv:1403.7845; CERN-PH-EP-2014-059.- Geneva : CERN, 2014 - 13 p. Draft (restricted): PDF; Fulltext: PDF; External link: Preprint

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2014-03-21
21:57
Measurement of the 4$\ell$ Cross Section at the $Z$ Resonance and Determination of the Branching Fraction of $Z\rightarrow 4\ell$ in $pp$ Collisions at $\sqrt{s}$ = 7 and 8 TeV with ATLAS / ATLAS Collaboration
Measurements of four-lepton (4$\ell$, $\ell=e,\mu$) production cross sections at the $Z$ resonance in $pp$ collisions at the LHC with the ATLAS detector are presented. [...]
arXiv:1403.5657 ; CERN-PH-EP-2014-047.
- 2014. - 20 p.
Previous draft version - Preprint

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2014-03-20
21:21
Search for direct production of charginos, neutralinos and sleptons in final states with two leptons and missing transverse momentum in $pp$ collisions at $\sqrt{s}$=8 TeV with the ATLAS detector / ATLAS Collaboration
Searches for the electroweak production of charginos, neutralinos and sleptons in final states characterized by the presence of two leptons (electrons and muons) and missing transverse momentum are performed using 20.3 fb$^{-1}$ of proton-proton collision data at $\sqrt{s}$=8 TeV recorded with the ATLAS experiment at the Large Hadron Collider. [...]
arXiv:1403.5294 ; CERN-PH-EP-2014-037.
- 2014. - 53 p.
Previous draft version - Preprint

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