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Title: Discovering Higgs Bosons of the MSSM using Jet Substructure

Abstract

We present a qualitatively new approach to discover Higgs bosons of the MSSM at the LHC using jet substructure techniques applied to boosted Higgs decays. These techniques are ideally suited to the MSSM, since the lightest Higgs boson overwhelmingly decays to b{bar b} throughout the entire parameter space, while the heavier neutral Higgs bosons, if light enough to be produced in a cascade, also predominantly decay to b{bar b}. The Higgs production we consider arises from superpartner production where superpartners cascade decay into Higgs bosons. We study this mode of Higgs production for several superpartner hierarchies: m{sub {tilde q}},m{sub {tilde g}} > m{sub {tilde W}},{sub {tilde B}} > m{sub h} + {mu}; m{tilde q};m{sub {tilde q}},m{sub {tilde g}} > m{sub {tilde W}},{sub {tilde B}} > m {sub h,H,A} + {mu}; and m{sub {tilde q}},m{sub {tilde g}} > m{sub {tilde W}} > m{sub h} + {mu} with m{sub {tilde B}} {approx} {mu}. In these cascades, the Higgs bosons are boosted, with pT > 200 GeV a large fraction of the time. Since Higgs bosons appear in cascades originating from squarks and/or gluinos, the cross section for events with at least one Higgs boson can be the same order as squark/gluino production.more » Given 10 fb{sup -1} of 14 TeV LHC data, with m{sub {tilde q}} {approx}< 1 TeV, and one of the above superpartner mass hierarchies, our estimate of S{radical} B of the Higgs signal is sufficiently high that the b{bar b} mode can become the discovery mode of the lightest Higgs boson of the MSSM.« less

Authors:
; ; ;
Publication Date:
Research Org.:
Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
982240
Report Number(s):
FERMILAB-PUB-10-190-T
arXiv eprint number arXiv:1006.1656; TRN: US1004277
DOE Contract Number:
AC02-07CH11359
Resource Type:
Journal Article
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS, 72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; CROSS SECTIONS; DATA; DECAY; HIGGS BOSONS; JETS; MASS; ORDERS; PRODUCTION; SIGNALS; SPACE; VISIBLE RADIATION; Experiment-HEP, Phenomenology-HEP

Citation Formats

Kribs, Graham D., Martin, Adam, Roy, Tuhin S., and Spannowsky, Michael. Discovering Higgs Bosons of the MSSM using Jet Substructure. United States: N. p., 2010. Web. doi:10.1103/PhysRevD.82.095012.
Kribs, Graham D., Martin, Adam, Roy, Tuhin S., & Spannowsky, Michael. Discovering Higgs Bosons of the MSSM using Jet Substructure. United States. doi:10.1103/PhysRevD.82.095012.
Kribs, Graham D., Martin, Adam, Roy, Tuhin S., and Spannowsky, Michael. Tue . "Discovering Higgs Bosons of the MSSM using Jet Substructure". United States. doi:10.1103/PhysRevD.82.095012. https://www.osti.gov/servlets/purl/982240.
@article{osti_982240,
title = {Discovering Higgs Bosons of the MSSM using Jet Substructure},
author = {Kribs, Graham D. and Martin, Adam and Roy, Tuhin S. and Spannowsky, Michael},
abstractNote = {We present a qualitatively new approach to discover Higgs bosons of the MSSM at the LHC using jet substructure techniques applied to boosted Higgs decays. These techniques are ideally suited to the MSSM, since the lightest Higgs boson overwhelmingly decays to b{bar b} throughout the entire parameter space, while the heavier neutral Higgs bosons, if light enough to be produced in a cascade, also predominantly decay to b{bar b}. The Higgs production we consider arises from superpartner production where superpartners cascade decay into Higgs bosons. We study this mode of Higgs production for several superpartner hierarchies: m{sub {tilde q}},m{sub {tilde g}} > m{sub {tilde W}},{sub {tilde B}} > m{sub h} + {mu}; m{tilde q};m{sub {tilde q}},m{sub {tilde g}} > m{sub {tilde W}},{sub {tilde B}} > m {sub h,H,A} + {mu}; and m{sub {tilde q}},m{sub {tilde g}} > m{sub {tilde W}} > m{sub h} + {mu} with m{sub {tilde B}} {approx} {mu}. In these cascades, the Higgs bosons are boosted, with pT > 200 GeV a large fraction of the time. Since Higgs bosons appear in cascades originating from squarks and/or gluinos, the cross section for events with at least one Higgs boson can be the same order as squark/gluino production. Given 10 fb{sup -1} of 14 TeV LHC data, with m{sub {tilde q}} {approx}< 1 TeV, and one of the above superpartner mass hierarchies, our estimate of S{radical} B of the Higgs signal is sufficiently high that the b{bar b} mode can become the discovery mode of the lightest Higgs boson of the MSSM.},
doi = {10.1103/PhysRevD.82.095012},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Tue Jun 01 00:00:00 EDT 2010},
month = {Tue Jun 01 00:00:00 EDT 2010}
}
  • We present a qualitatively new approach to discover Higgs bosons of the minimal supersymmetric standard model (MSSM) at the LHC using jet substructure techniques applied to boosted Higgs decays. These techniques are ideally suited to the MSSM, since the lightest Higgs boson overwhelmingly decays to bb throughout the entire parameter space, while the heavier neutral Higgs bosons, if light enough to be produced in a cascade, also predominantly decay to bb. The Higgs production we consider arises from superpartner production where superpartners cascade decay into Higgs bosons. We study this mode of Higgs production for several superpartner hierarchies: m{sub q}-tilde,more » m{sub g}-tilde>m{sub W}-tilde{sub ,B}-tilde>m{sub h}+{mu}; m{sub q}-tilde, m{sub g}-tilde>m{sub W}-tilde{sub ,B}-tilde>m{sub h,H,A}+{mu}; and m{sub q}-tilde, m{sub g}-tilde>m{sub W}-tilde>m{sub h}+{mu} with m{sub B}-tilde{approx_equal}{mu}. In these cascades, the Higgs bosons are boosted, with p{sub T}>200 GeV a large fraction of the time. Since Higgses appear in cascades originating from squarks and/or gluinos, the cross section for events with at least one Higgs can be the same order as squark/gluino production. Given 10 fb{sup -1} of 14 TeV LHC data, with m{sub q}-tilde < or approx. 1 TeV, and one of the above superpartner mass hierarchies, our estimate of S/{radical}(B) of the Higgs signal is sufficiently high that the bb mode can become the discovery mode of the lightest Higgs boson of the MSSM.« less
  • We demonstrate that the Higgs boson can be discovered at the large hadron collider in new physics events using boosted kinematics, b-tagging and jet substructure. This method superbly identifies the lightest Higgs boson in the minimal supersymmetric standard model. Two case studies are considered where Higgs is produced in association with superpartners that decay to a light gravitino, however generalizations to other spectra and models is anticipated. In some circumstances, discovery of the lightest Higgs is possible before conventional search strategies uncover convincing evidence.
  • We performed a search for a vector-like heavy T quark that is produced in pairs and that decays to a top quark and a Higgs boson. The data analysed correspond to an integrated luminosity of 19.7 fb -1collected with the CMS detector in proton-proton collisions at √s=8 TeV. For T quarks with large mass values the top quarks and Higgs bosons can have significant Lorentz boosts, so that their individual decay products often overlap and merge. Methods are applied to resolve the substructure of such merged jets. We also derived upper limits on the production cross section of a Tmore » quark with mass between 500 and 1000 GeV/c 2. If the T quark decays exclusively to tH, the observed (expected) lower limit on the mass of the T quark is 745 (773) GeV/c 2 at 95% confidence level. For the first time an algorithm is used for tagging boosted Higgs bosons that is based on a combination of jet substructure information and b tagging.« less
  • Top partners--vectorlike quarks which mix predominantly with the top quark, are simple extensions of the standard model present in many theories of new physics such as little Higgs models, topcolor models, and extra dimensions. Through renormalizable mixing with the top quark, these top partners inherit couplings to the Higgs boson. Higgs bosons produced from the decay of top partners are often highly boosted and ideal candidates for analyses based on jet substructure. Using substructure methods, we show that light Higgs bosons decaying to bb can be discovered at the 14 TeV LHC with less than 10 fb{sup -1} for top-partnermore » masses up to 1 TeV.« less
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