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Searching the inclusive l gamma E-T + b-quark signature for radiative top quark decay and non-standard-model processes

Aaltonen T.
•
Adelman J.
•
Akimoto T.
altro
Zucchelli S.
2009
  • journal article

Periodico
PHYSICAL REVIEW D, PARTICLES, FIELDS, GRAVITATION, AND COSMOLOGY
Abstract
We compare the inclusive production of events containing a lepton (l), a photon (gamma), significant transverse momentum imbalance (E-T), and a jet identified as containing a b-quark, to SM predictions. The search uses data produced in proton-antiproton collisions at root sp = 1.96 TeV corresponding to 1.9 fb(-1) of integrated luminosity taken with the CDF detector. We find 28 l gamma E-T events versus an expectation of 31.0(-3.5)(+4.1) events. If we further require events to contain at least three jets and large total transverse energy, the largest SM source is radiative top-quark pair production, t (r) over bar + gamma. In the data we observe 16 t (t) over bar gamma candidate events versus an expectation from SM sources of 11.2(-2.1)(+2.3) Assuming the difference between the observed number and the predicted non-top-quark total of 6.8(-2.0)(+2.2) is due to SM top- quark production, we estimate the t (t) over bart cross section to be 0.15 +/- 0.08 pb.
DOI
10.1103/PhysRevD.80.011102
WOS
WOS:000268618600002
Archivio
http://hdl.handle.net/11390/879504
info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-69949089013
Diritti
metadata only access
Scopus© citazioni
6
Data di acquisizione
Jun 2, 2022
Vedi dettagli
Web of Science© citazioni
6
Data di acquisizione
Mar 3, 2024
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