skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Higgs bosons, electroweak symmetry breaking, and the physics of the Large Hadron Collider

Abstract

The Large Hadron Collider, a 7 {circle_plus} 7 TeV proton-proton collider under construction at CERN (the European Laboratory for Particle Physics in Geneva), will take experiments squarely into a new energy domain where mysteries of the electroweak interaction will be unveiled. What marks the 1-TeV scale as an important target? Why is understanding how the electroweak symmetry is hidden important to our conception of the world around us? What expectations do we have for the agent that hides the electroweak symmetry? Why do particle physicists anticipate a great harvest of discoveries within reach of the LHC?

Authors:
;
Publication Date:
Research Org.:
Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
900367
Report Number(s):
FERMILAB-PUB-07-002-T
arXiv eprint number arXiv:0704.2045; TRN: US0702270
DOE Contract Number:
AC02-07CH11359
Resource Type:
Journal Article
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; CERN; CONSTRUCTION; HADRONS; HIGGS BOSONS; PHYSICS; SYMMETRY; SYMMETRY BREAKING; Phenomenology-HEP

Citation Formats

Quigg, Chris, and /Fermilab /CERN. Higgs bosons, electroweak symmetry breaking, and the physics of the Large Hadron Collider. United States: N. p., 2007. Web. doi:10.1080/00107510701292187.
Quigg, Chris, & /Fermilab /CERN. Higgs bosons, electroweak symmetry breaking, and the physics of the Large Hadron Collider. United States. doi:10.1080/00107510701292187.
Quigg, Chris, and /Fermilab /CERN. Thu . "Higgs bosons, electroweak symmetry breaking, and the physics of the Large Hadron Collider". United States. doi:10.1080/00107510701292187. https://www.osti.gov/servlets/purl/900367.
@article{osti_900367,
title = {Higgs bosons, electroweak symmetry breaking, and the physics of the Large Hadron Collider},
author = {Quigg, Chris and /Fermilab /CERN},
abstractNote = {The Large Hadron Collider, a 7 {circle_plus} 7 TeV proton-proton collider under construction at CERN (the European Laboratory for Particle Physics in Geneva), will take experiments squarely into a new energy domain where mysteries of the electroweak interaction will be unveiled. What marks the 1-TeV scale as an important target? Why is understanding how the electroweak symmetry is hidden important to our conception of the world around us? What expectations do we have for the agent that hides the electroweak symmetry? Why do particle physicists anticipate a great harvest of discoveries within reach of the LHC?},
doi = {10.1080/00107510701292187},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Thu Feb 01 00:00:00 EST 2007},
month = {Thu Feb 01 00:00:00 EST 2007}
}
  • Recent progress in calculating O({alpha}) electroweak corrections to W{sup +}W{sup -} pair production in photon-photon collisions is reviewed. The potential of the Photon Linear Collider to study anomalous W couplings is discussed.
  • We study the discovery reach of the Fermilab Tevatron and the CERN large hadron collider (LHC) for detecting a Higgs boson (h ), predicted in composite models of the electroweak symmetry breaking or in supersymmetric theories, with an enhanced b-quark Yukawa coupling via p{bar p}/pp{r_arrow}b{bar b} h({r_arrow}b{bar b})+X . Our analysis shows that studying this process at the Tevatron Run II or the LHC can provide strong constraints on these models. {copyright} {ital 1998} {ital The American Physical Society}
  • Radiative corrections of strong and electroweak interactions are presented at next-to-leading order for the production of a Higgs boson plus two hard jets via weak interactions at the CERN Large Hadron Collider. The calculation includes all weak-boson fusion and quark-antiquark annihilation diagrams as well as the corresponding interferences. The electroweak corrections, which are discussed here for the first time, reduce the cross sections by 5% and thus are of the same order of magnitude as the QCD corrections.
  • We study integrated and differential rates for the production of charged Higgs bosons H{sup {plus_minus}} of the minimal supersymmetric standard model via b-quark-initiated subprocesses in pp collisions at the CERN Large Hadron Collider. In detail, we compute cross sections and distributions of the reactions bU{r_arrow}bDH{sup +}{r_arrow}bD{tau}{sup +}{nu}{sub {tau}}{circle_plus}c.c. and bU{r_arrow}bDH{sup +}{r_arrow}bDt{bar b}{r_arrow}bDb{bar b}jj{circle_plus}c.c., for a H{sup {plus_minus}} scalar in the intermediate (i.e., M{sup {plus_minus}}{lt}m{sub t}+m{sub b}) and heavy (i.e., M{sup {plus_minus}}{gt}m{sub t}+m{sub b}) mass range, respectively (U and D represent generic u- and d-type light quarks). In the former case, charged Higgs boson masses up to about 145 GeV canmore » be covered for both large and small tan{beta}{close_quote}s. In the latter case, charged scalars can be detected for values of M{sub H{sup {plus_minus}}} up to about 500 GeV, especially if tan{beta} is large, and provided that either excellent b-tagging performances can be achieved or the high luminosity option becomes available. {copyright} {ital 1997} {ital The American Physical Society}« less
  • In some extensions of the standard model the (lightest) Higgs boson can have mainly invisible decays, decaying to a pair of the lightest supersymmetric partners, or to Goldstone bosons, or to Majorons, none of which interact in the detector. Thus it is not clear how such a Higgs boson can be detected. We show that associated production of such Higgs bosons with [ital Z]'s at high-luminosity hadron colliders can provide a detectable signal for the mass region of most interest, [ital M][sub [ital h]][le]150 GeV. If a Higgs boson is detected another way, so that [ital M][sub [ital h]] ismore » known, this method may allow a measurement of the branching ratio ([ital B]) ([ital h][r arrow]invisible), and may also allow measurement of other branching ratios.« less