Study of W+Jets background to top quark pair production cross section in ATLAS at the LHC
Contributo in Atti di convegno
Data di Pubblicazione:
2010
Citazione:
Study of W+Jets background to top quark pair production cross section in ATLAS at the LHC / M.I. Besana (FRASCATI PHYSICS SERIES). - In: Second young researchers workshop 2010 : physics challenges in the LHC era / [a cura di] E. Nardi. - [s.l] : Istituto Nazionale di Fisica Nucleare, 2010. - ISBN 9788886409605. - pp. 25-30 (( Intervento presentato al 2. convegno Young researchers workshop : physics challenges in the LHC era tenutosi a Frascati nel 2010.
Abstract:
The measurement of top quark pair production cross section in p-p collisions at center-of-mass energy of 7 TeV is one of the first measurements that will be made by ATLAS at the LHC. The most promising channel is the semileptonic final state, where one of the top decays into a W decaying into hadrons and
the other top into a W decaying leptonically. The dominant background to
this channel of top quark pairs is given by direct p-p production of W+jets. Monte Carlo predictions for the rate of this background have large uncertain-
ties; however it will be important to know it with precision in order to make
an accurate measurement of top quark pair production cross section. In the
following, a data-driven technique developed in order to reduce this uncertainty
is presented and first results on real data are discussed.
Tipologia IRIS:
03 - Contributo in volume
Keywords:
ATLAS; top quark pair; W+jets; 7 TeV collisions
Elenco autori:
M.I. Besana
Link alla scheda completa:
Titolo del libro:
Second young researchers workshop 2010 : physics challenges in the LHC era