Searches for non-SM Higgs
at the Tevatron

Andy Haas

DØ / ATLAS

Columbia University

on behalf of the
DØ and CDF Collaborations

Moriond QCD 2007

Outline

Introduction

The Tevatron

DØ and CDF detectors

MSSM Higgs

(H/A)->tautau

b(H/A)->bbb

Fermiophobic Higgs

Prospects

b(H/A)->bbb

BR(H/A->bb)~90% at high tanB

H/A->bb swamped by QCD bckg.

Look for associated b and H/A->bb

>=3 b-tagged jets with pT>40,25,15 GeV

Signal:

Invariant mass of leading jets is peaked at mA

Backgrounds (determined in data):

Shape is from the double b-tagged data sample
(taking into account kinematic bias from the 3rd b-tag)

Size is normalized outside the “signal region” (for each candidate mA and tanB)

Events with >=3
b-tagged jets

“Signal window”

0.9 fb-1

Inv. mass of leading jets (GeV)

(mA=120, tanB=60)

b(H/A)->bbb Limits

Data agrees with the predicted background

Set upper tanB limits on various Higgs masses using the CLs method

Limits comparable to H/A->tautau, especially at low mA

(mA=120, tanB=60)

0.9 fb-1

0.9 fb-1

0.9 fb-1

Inv. mass of leading jets (GeV)

Prospects

Results from the first 1/fb of data show very promising sensitivity

Expect up to 8 fb-1 by 2009

By the end of Run II, exclude

up to mA~250 GeV for high tanB

down to tanB~20 for low mA

Or make a discovery!

DØ will combine
H/A->tautau, b(H/A)->bbb, and
b(H/A)->btautau (not discussed),
channels (for this summer?)

Working group is in place for the combination of DØ and CDF results

Back-up Slides

Upcoming Analyses: h->4tau

Simulated

h->4tau

event

Dmitri Denisov, ICHEP04, August 21 2004

Andy Haas

2004-07-07T15:59:13