Sirunyan, AM;
Tumasyan, A;
Adam, W;
Ambrogi, F;
Asilar, E;
Bergauer, T;
Brandstetter, J;
... Woods, N; + view all
(2018)
Inclusive Search for a Highly Boosted Higgs Boson Decaying to a Bottom Quark-Antiquark Pair.
Physical Review Letters
, 120
(7)
, Article 071802. 10.1103/PhysRevLett.120.071802.
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Abstract
An inclusive search for the standard model Higgs boson ( H ) produced with large transverse momentum ( p T ) and decaying to a bottom quark-antiquark pair ( b ¯ b ) is performed using a data set of p p collisions at √ s = 13 TeV collected with the CMS experiment at the LHC. The data sample corresponds to an integrated luminosity of 35.9 fb − 1 . A highly Lorentz-boosted Higgs boson decaying to b ¯ b is reconstructed as a single, large radius jet, and it is identified using jet substructure and dedicated b tagging techniques. The method is validated with Z → b ¯ b decays. The Z → b ¯ b process is observed for the first time in the single-jet topology with a local significance of 5.1 standard deviations (5.8 expected). For a Higgs boson mass of 125 GeV, an excess of events above the expected background is observed (expected) with a local significance of 1.5 (0.7) standard deviations. The measured cross section times branching fraction for production via gluon fusion of H → b ¯ b with reconstructed p T > 450 GeV and in the pseudorapidity range − 2.5 < η < 2.5 is 74 ± 48 ( stat ) + 17 − 10 ( syst ) fb , which is consistent within uncertainties with the standard model prediction.
| Type: | Article |
|---|---|
| Title: | Inclusive Search for a Highly Boosted Higgs Boson Decaying to a Bottom Quark-Antiquark Pair |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1103/PhysRevLett.120.071802 |
| Publisher version: | https://doi.org/10.1103/PhysRevLett.120.071802 |
| Language: | English |
| Additional information: | This work is licensed under a Creative Commons Attribution 4.0 International License. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in the credit line; if the material is not included under the Creative Commons license, users will need to obtain permission from the license holder to reproduce the material. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/ |
| Keywords: | Science & Technology, Physical Sciences, Physics, Multidisciplinary, Physics, BROKEN SYMMETRIES, MASS |
| UCL classification: | UCL UCL > Provost and Vice Provost Offices > UCL BEAMS UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences |
| URI: | https://discovery-pp.ucl.ac.uk/id/eprint/10080249 |
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