Speaker
Please give a brief summary of your poster
The ability to identify jets containing b-hadrons is important for the
high-pT physics program of a general-purpose experiment at the LHC such
as ATLAS. This is in particular useful to select very pure top samples,
to search and/or study Standard Model or supersymmetric Higgs bosons
which couple preferably to heavy objects or are produced in association
with heavy quarks, to veto the large dominant ttbar background for
several physics channels and finally to search for new physics: SUSY
decay chains, heavy gauge bosons, etc. After a review of the algorithms
used to identify b-jets, their anticipated performance is discussed as
well as the impact of various critical ingredients such as the residual
misalignments in the tracker. The prospects to measure the b-tagging
performance in the first few hundreds pb-1 of data with di-jet events
and ttbar events are then discussed. Finally three different use cases
are discussed: the top mass measurement, the search for a low-mass Higgs
boson produced in association with a top quark pair and decaying to
bbbar, and the specific challenges of tagging very high-pT (TeV) jets
for exotics search
