• Intermediate Higgs (180 GeV < m_H < 350 GeV) -- Paul Derwent
• Heavy Higgs (350 GeV < m_H < 750 GeV) -- William Wester

Spurred by the discussion, Paul Derwent did some digging on the capability of the LHC for intermediate masses.  He writes:

Subject: H->WW at LHC
Date: Thu, 29 Jun 2000 11:04:47 -0500
From: Paul Derwent 

After yesterday's discussion, I did a quick search for
references on this process, specifically in the mass
range 160-180, where WW dominates the decay fraction.
Two recent papers on the subject that I found are

(1)  D. Rainwater and D. Zeppenfeld, PRD 60, 113004 (1999)
(2)  M. Dittmar and H. Dreiner, PRD 55, 167 (1997)

They look at different production modes and hence have
different analysis techniques.  They both concentrate
on discovery of the Higgs, not the measurement of the
branching fraction into WW.  With parton level analysis
(+ detector smearing) and 5 fb-1 of data, both conclude
that this mode can be seen.

                    (1)            (2)
                -----------    -----------
Background       5.5 events     92 events
160 GeV Signal  37.5 events     78 events
170 GeV signal  36.2 events     74 events

which gives statistical uncertainties of 17% for analysis
(1) and 7% for analysis (2).  Additional uncertainties
will crop up in measuring the branching fraction, not to
mention background and id uncertainties not yet included.

-Paul


--
Paul Derwent
Fermilab Pbar Source               (630)840 8520      8737 fax
FNAL MS 341
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