PoS - Proceedings of Science
Volume 282 - 38th International Conference on High Energy Physics (ICHEP2016) - Poster Session
First attempt to search for H+ to cbbar in top quark decays at CMS
G. Yu* on behalf of the CMS collaboration
*corresponding author
Full text: pdf
Pre-published on: February 06, 2017
Published on: April 19, 2017
Abstract
Results on the first search for a light charged Higgs boson ${\rm H^{+}}$ decaying to ${\rm c\bar{b}}$ in top quark pair events using the CMS detector at the LHC are presented.
%It is the first search for a charged Higgs boson in this decay mode.
The total dataset corresponds to 19.7 ${\rm fb^{-1}}$ of proton-proton collisions at $\sqrt{s}$ = 8 TeV.
In ${\rm t\bar{t}}$ decays, if one top quark decays to ${\rm H^{+} b}$ and the ${\rm H^{+}}$ subsequently decays to ${\rm c \bar{b}}$, while other top quark decays leptonically (${\rm \bar{t} \rightarrow W^{-}\bar{b}} \rightarrow l \bar{\nu} {\rm \bar{b}})$), the final state then consists of four jets (three ${\rm b}$ quark jets), one lepton (electron or muon), and missing energy:
${\rm t\bar{t} \rightarrow (H^{+}b)(W^{-}\bar{b})}$ $ \rightarrow {\rm (c\bar{b} b)} (l \bar{\nu} {\rm \bar{b}})$.
The main observable used in the analysis is an invariant mass of two jets, one of which is identified as a b-quark jet.
The dijet pair is selected from at least four jets in an event by a dedicated kinematic fitter.
No signal for the presence of a charged Higgs boson is observed and upper limits are set at 95\% confidence level on the branching ratio for ${\rm t \rightarrow H^{+} b}$
from 1.1--0.4\% for the charged Higgs boson mass in the range 90--150~GeV in the assumption of branching ratio of ${\rm B(H^{+} \rightarrow c\bar{b})=100\%}$.
DOI: https://doi.org/10.22323/1.282.0776
How to cite

Metadata are provided both in "article" format (very similar to INSPIRE) as this helps creating very compact bibliographies which can be beneficial to authors and readers, and in "proceeding" format which is more detailed and complete.

Open Access
Creative Commons LicenseCopyright owned by the author(s) under the term of the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.