Observability of a heavy Higgs boson at hadron supercolliders

Journal Article · Mon Jul 01 00:00:00 EDT 1991 · Physical Review, D (Particles Fields); (USA)

DOI:https://doi.org/10.1103/PhysRevD.44.99· OSTI ID:5538147

Baur, U ^[1]; Glover, E W.N. ^[2]

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1. Physics Department, University of Wisconsin, Madison, Wisconsin 53706 (USA)
2. Fermi National Accelerator Laboratory, P.O. Box 500, Batavia, Illinois 60510 (USA)

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.

• DOE Contract Number: AC02-76ER00881
• OSTI ID: 5538147
• Journal Information: Physical Review, D (Particles Fields); (USA), Vol. 44:1; ISSN 0556-2821
• Country of Publication: United States
• Language: English

Related Subjects

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