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Search for heavy bottom-like quarks in 4.9 fb-1 of pp collisions at √s = 7 TeV

S. Chatrchyan, +2262 more
- 25 May 2012 - 
- Vol. 2012, Iss: 5, pp 123
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TLDR
In this paper, a search for heavy bottom-like quarks, pair-produced in pp collisions at sqrt(s) = 7 TeV, undertaken with the CMS experiment at the LHC is presented.
Abstract: 
Results are presented from a search for heavy bottom-like quarks, pair-produced in pp collisions at sqrt(s) = 7 TeV, undertaken with the CMS experiment at the LHC. The b' quarks are assumed to decay exclusively to tW. The b' anti-b' to t W(+) anti-t W(-) process can be identified by its distinctive signatures of three leptons or two leptons of same charge, and at least one b-quark jet. Using a data sample corresponding to an integrated luminosity of 4.9 inverse femtobarns, observed events are compared to the standard model background predictions, and the existence of b' quarks having masses below 611 GeV is excluded at 95% confidence level.

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General Composite Higgs Models

David Marzocca, +3 more
- 02 Aug 2012 - 
TL;DR: In this article, a general class of pseudo-Goldstone composite Higgs models, within the minimal SO(5)=SO(4) coset structure, that are not necessarily of moose-type were constructed.
Journal ArticleDOI

Light top partners for a light composite Higgs

Oleksii Matsedonskyi, +2 more
- 25 Jan 2013 - 
TL;DR: In this article, it was shown that the requirement of a light enough Higgs strongly constrains the fermionic spectrum and makes the light partners appear in the Discrete Composite Higgs Model.
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A first top partner hunter’s guide

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- 02 Apr 2013 - 
TL;DR: In this article, the authors provide a systematic effective lagrangian description of the phenomenology of the lightest top-partners in composite Higgs models, based on symmetry, on selection rules and on plausible dynamical assumptions.
Journal ArticleDOI

Are IceCube neutrinos unveiling PeV-scale decaying dark matter?

Arman Esmaili, +1 more
- 25 Nov 2013 - 
TL;DR: In this paper, the authors explore the possibility of interpreting the data with a few PeV mass scale decaying dark matter, with lifetime of the order of 1027 s, and discuss generic signatures of this scenario, including its unique energy spectrum distortion with respect to the benchmark Eν−2 expectation for astrophysical sources, as well as peculiar anisotropies.
Journal ArticleDOI

A Higgs conundrum with vector fermions

Sally Dawson, +1 more
- 20 Jul 2012 - 
TL;DR: In this paper, the connection between electroweak precision measurements and Higgs production was examined and it was shown that the gluon fusion Higgs cross section and the Higgs decay branching ratios must be close to those predicted by the standard model.
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