Higgs boson discovery potential of LHC in the channel p p ---> gamma gamma + jet

Abdullin, S.; Dubinin, M.; Ilyin, V.; Kovalenko, D.; Savrin, V.; Stepanov, N.

doi:10.1016/S0370-2693(98)00547-4

Higgs boson discovery potential of LHC in the channel p p ---> gamma gamma + jet

May, 1998

13 pages

Published in:

Phys.Lett.B 431 (1998) 410-419

e-Print:

hep-ph/9805341 [hep-ph]

DOI:

10.1016/S0370-2693(98)00547-4

Report number:

INP-MSU-98-13-514

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Abstract:

We discuss the SM Higgs discovery potential of LHC in the reaction

pp\to H+ jet\to\gamma\gamma+jet

when the jet is observed at sufficiently high

E_t

to be reliably identified. We conclude that this channel gives promising discovery possibilities for the Higgs boson mass range 100-140 GeV, during LHC operation at a low luminosity. With 30 fb

^{-1}

of accumulated data and for

M_H=120

GeV about 100 signal events could be observed with the number of background events larger by a factor of 2 only, showing a signal significance

S/\sqrt{B}\sim 7

. We use the difference of distributions in the partonic subprocess energy

\sqrt{\hat s}

for the signal and background for a better separation of the signal.

Note:

15 pages including 6 figures, LaTeX, use epsfig.sty. To appear in Phys.Lett.B. In this replacement minor LaTeX improvements are made

p p: inclusive reaction
Higgs particle: search for
photon: pair production
jet: associated production
Higgs particle: hadroproduction
Higgs particle: radiative decay
Higgs particle: mass
luminosity
background
model: parton

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