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Search for Higgs bosons and new particles decaying into two photons at √s=183 GeV

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Search for Higgs bosons and new particles decaying into two photons at √s=183 GeV. / OPAL Collaboration.
In: Physics Letters B, Vol. 437, No. 1-2, 01.10.1998, p. 218-230.

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OPAL Collaboration. Search for Higgs bosons and new particles decaying into two photons at √s=183 GeV. Physics Letters B. 1998 Oct 1;437(1-2):218-230. doi: 10.1016/S0370-2693(98)01095-8

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OPAL Collaboration. / Search for Higgs bosons and new particles decaying into two photons at √s=183 GeV. In: Physics Letters B. 1998 ; Vol. 437, No. 1-2. pp. 218-230.

Bibtex

@article{245adbe860a042619d64a8bf787d9f6d,
title = "Search for Higgs bosons and new particles decaying into two photons at √s=183 GeV",
abstract = "A search for the resonant production of high mass photon pairs associated with a leptonic or hadronic system has been performed using a data sample of 57.7 pby1 collected at an average center-of-mass energy of 182.6 GeV with the OPAL detector at LEP. No evidence for contributions from non-Standard Model physics processes was observed. The observed {\v Z} 0 candidates are used to place limits on B H {\texttrademark}gg . assuming a Standard Model production rate for Higgs boson masses up to 92 GeV, and on the production cross section for a scalar resonance decaying into di-photons up to a mass of 170 GeV. {\v Z} .{\v Z} .{\v Z} . q y Upper limits on the product of cross section and branching ratios, s e e {\texttrademark}XY =B X{\texttrademark}gg =B Y{\texttrademark}ff , as low as 70 fb are obtained over the range 10-MX Y XY -170 GeV for the case where 10-M -160 GeV and M qM )90 GeV, independent of the nature of Y provided it decays to a fermion pair and has negligible width. Higgs scalars which couple only to gauge bosons at Standard Model strength are ruled out up to a mass of 90.0 GeV at the 95% confidence level. Limits are also placed on non-minimal Higgs sectors having triplet representations. q 1998 Published by Elsevier Science B.V. All rights reserved.",
author = "Vakhtang Kartvelishvili and {OPAL Collaboration}",
year = "1998",
month = oct,
day = "1",
doi = "10.1016/S0370-2693(98)01095-8",
language = "English",
volume = "437",
pages = "218--230",
journal = "Physics Letters B",
issn = "0370-2693",
publisher = "ELSEVIER SCIENCE BV",
number = "1-2",

}

RIS

TY - JOUR

T1 - Search for Higgs bosons and new particles decaying into two photons at √s=183 GeV

AU - Kartvelishvili, Vakhtang

AU - OPAL Collaboration

PY - 1998/10/1

Y1 - 1998/10/1

N2 - A search for the resonant production of high mass photon pairs associated with a leptonic or hadronic system has been performed using a data sample of 57.7 pby1 collected at an average center-of-mass energy of 182.6 GeV with the OPAL detector at LEP. No evidence for contributions from non-Standard Model physics processes was observed. The observed Ž 0 candidates are used to place limits on B H ™gg . assuming a Standard Model production rate for Higgs boson masses up to 92 GeV, and on the production cross section for a scalar resonance decaying into di-photons up to a mass of 170 GeV. Ž .Ž .Ž . q y Upper limits on the product of cross section and branching ratios, s e e ™XY =B X™gg =B Y™ff , as low as 70 fb are obtained over the range 10-MX Y XY -170 GeV for the case where 10-M -160 GeV and M qM )90 GeV, independent of the nature of Y provided it decays to a fermion pair and has negligible width. Higgs scalars which couple only to gauge bosons at Standard Model strength are ruled out up to a mass of 90.0 GeV at the 95% confidence level. Limits are also placed on non-minimal Higgs sectors having triplet representations. q 1998 Published by Elsevier Science B.V. All rights reserved.

AB - A search for the resonant production of high mass photon pairs associated with a leptonic or hadronic system has been performed using a data sample of 57.7 pby1 collected at an average center-of-mass energy of 182.6 GeV with the OPAL detector at LEP. No evidence for contributions from non-Standard Model physics processes was observed. The observed Ž 0 candidates are used to place limits on B H ™gg . assuming a Standard Model production rate for Higgs boson masses up to 92 GeV, and on the production cross section for a scalar resonance decaying into di-photons up to a mass of 170 GeV. Ž .Ž .Ž . q y Upper limits on the product of cross section and branching ratios, s e e ™XY =B X™gg =B Y™ff , as low as 70 fb are obtained over the range 10-MX Y XY -170 GeV for the case where 10-M -160 GeV and M qM )90 GeV, independent of the nature of Y provided it decays to a fermion pair and has negligible width. Higgs scalars which couple only to gauge bosons at Standard Model strength are ruled out up to a mass of 90.0 GeV at the 95% confidence level. Limits are also placed on non-minimal Higgs sectors having triplet representations. q 1998 Published by Elsevier Science B.V. All rights reserved.

U2 - 10.1016/S0370-2693(98)01095-8

DO - 10.1016/S0370-2693(98)01095-8

M3 - Journal article

VL - 437

SP - 218

EP - 230

JO - Physics Letters B

JF - Physics Letters B

SN - 0370-2693

IS - 1-2

ER -