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Title: Observability of a heavy Higgs boson at hadron supercolliders

Abstract

We present a coherent analysis of Higgs-boson production in the channels {ital pp}{r arrow}{ital ZZX}{r arrow}{ital l}{sup +}{ital l{minus}}{ital l} {prime}{sup +}{ital l} {prime}{sup {minus}}{ital X} ({ital l},{ital l} {prime}={ital e},{mu}) and {ital pp}{r arrow}{ital ZZX}{r arrow}{ital l}{sup +}{ital l{minus}}{nu}{bar {nu}}{ital X} ({nu}={nu}{sub {ital e}},{nu}{sub {mu}},{nu}{sub {tau}}) for {ital m}{sub {ital H}}{ge}600 GeV at hadron supercolliders, using the exact matrix elements for {ital gg}{r arrow}{ital ZZ} and {ital qq}{r arrow}{ital qqZZ}. The importance of a complete understanding of the shape of the perturbative {ital pp}{r arrow}{ital ZZX} background from nonresonant diagrams is emphasized. We find that for the CERN Large Hadron Collider (LHC) to have a Higgs-boson discovery potential comparable to that of the Superconducting Super Collider (SSC) requires at least a factor of 10 times more integrated luminosity. In particular, assuming an integrated luminosity of 10{sup 4} pb{sup {minus}1} and perfect lepton identification efficiency, the LHC (SSC) can identify Higgs bosons as resonances with mass up to 600 (800) GeV in {ital pp}{r arrow}{ital ZZX}{r arrow}{ital l}{sup +}{ital l{minus}}{ital l}{prime}{sup +}{ital l}{prime}{sup {minus}}{ital X}. To extend the discovery range of the LHC to {ital m}{sub {ital H}}=800 GeV in this channel requires an integrated luminosity of at least 10{supmore » 5} pb{sup {minus}1}. For {ital m}{sub {ital H}}{gt}800 GeV, a clear resonance structure is missing; however, one can still discriminate between a heavy Higgs boson with {ital m}{sub {ital H}}{similar to}1 TeV and a light Higgs boson ({ital m}{sub {ital H}}{approx lt}2{ital M}{sub {ital z}}) at the SSC.« less

Authors:
 [1];  [2]
  1. Physics Department, University of Wisconsin, Madison, Wisconsin 53706 (USA)
  2. Fermi National Accelerator Laboratory, P.O. Box 500, Batavia, Illinois 60510 (USA)
Publication Date:
OSTI Identifier:
5538147
DOE Contract Number:  
AC02-76ER00881
Resource Type:
Journal Article
Journal Name:
Physical Review, D (Particles Fields); (USA)
Additional Journal Information:
Journal Volume: 44:1; Journal ID: ISSN 0556-2821
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; HIGGS BOSONS; DECAY; PARTICLE PRODUCTION; PROTON-PROTON INTERACTIONS; Z NEUTRAL BOSONS; PAIR PRODUCTION; BRANCHING RATIO; CROSS SECTIONS; FEYNMAN DIAGRAM; GLUONS; INCLUSIVE INTERACTIONS; LEPTONS; PARTICLE IDENTIFICATION; PARTICLE RAPIDITY; QUARKS; SUPERCONDUCTING SUPER COLLIDER; TOP PARTICLES; BARYON-BARYON INTERACTIONS; BOSONS; DIAGRAMS; ELEMENTARY PARTICLES; FERMIONS; HADRON-HADRON INTERACTIONS; INTERACTIONS; INTERMEDIATE BOSONS; INTERMEDIATE VECTOR BOSONS; NUCLEON-NUCLEON INTERACTIONS; PARTICLE INTERACTIONS; PARTICLE PROPERTIES; POSTULATED PARTICLES; PROTON-NUCLEON INTERACTIONS; STORAGE RINGS; 645204* - High Energy Physics- Particle Interactions & Properties-Theoretical- Strong Interactions & Properties

Citation Formats

Baur, U, and Glover, E W.N. Observability of a heavy Higgs boson at hadron supercolliders. United States: N. p., 1991. Web. doi:10.1103/PhysRevD.44.99.
Baur, U, & Glover, E W.N. Observability of a heavy Higgs boson at hadron supercolliders. United States. doi:10.1103/PhysRevD.44.99.
Baur, U, and Glover, E W.N. Mon . "Observability of a heavy Higgs boson at hadron supercolliders". United States. doi:10.1103/PhysRevD.44.99.
@article{osti_5538147,
title = {Observability of a heavy Higgs boson at hadron supercolliders},
author = {Baur, U and Glover, E W.N.},
abstractNote = {We present a coherent analysis of Higgs-boson production in the channels {ital pp}{r arrow}{ital ZZX}{r arrow}{ital l}{sup +}{ital l{minus}}{ital l} {prime}{sup +}{ital l} {prime}{sup {minus}}{ital X} ({ital l},{ital l} {prime}={ital e},{mu}) and {ital pp}{r arrow}{ital ZZX}{r arrow}{ital l}{sup +}{ital l{minus}}{nu}{bar {nu}}{ital X} ({nu}={nu}{sub {ital e}},{nu}{sub {mu}},{nu}{sub {tau}}) for {ital m}{sub {ital H}}{ge}600 GeV at hadron supercolliders, using the exact matrix elements for {ital gg}{r arrow}{ital ZZ} and {ital qq}{r arrow}{ital qqZZ}. The importance of a complete understanding of the shape of the perturbative {ital pp}{r arrow}{ital ZZX} background from nonresonant diagrams is emphasized. We find that for the CERN Large Hadron Collider (LHC) to have a Higgs-boson discovery potential comparable to that of the Superconducting Super Collider (SSC) requires at least a factor of 10 times more integrated luminosity. In particular, assuming an integrated luminosity of 10{sup 4} pb{sup {minus}1} and perfect lepton identification efficiency, the LHC (SSC) can identify Higgs bosons as resonances with mass up to 600 (800) GeV in {ital pp}{r arrow}{ital ZZX}{r arrow}{ital l}{sup +}{ital l{minus}}{ital l}{prime}{sup +}{ital l}{prime}{sup {minus}}{ital X}. To extend the discovery range of the LHC to {ital m}{sub {ital H}}=800 GeV in this channel requires an integrated luminosity of at least 10{sup 5} pb{sup {minus}1}. For {ital m}{sub {ital H}}{gt}800 GeV, a clear resonance structure is missing; however, one can still discriminate between a heavy Higgs boson with {ital m}{sub {ital H}}{similar to}1 TeV and a light Higgs boson ({ital m}{sub {ital H}}{approx lt}2{ital M}{sub {ital z}}) at the SSC.},
doi = {10.1103/PhysRevD.44.99},
journal = {Physical Review, D (Particles Fields); (USA)},
issn = {0556-2821},
number = ,
volume = 44:1,
place = {United States},
year = {1991},
month = {7}
}