|
Title
|
|
|
|
Searching the inclusive **b**-quark signature for radiative top quark decay and non-standard-model processes
| |
|
Author
|
|
|
|
| |
|
Institution/Organisation
|
|
|
|
CDF Collaboration
| |
|
Abstract
|
|
|
|
| We compare the inclusive production of events containing a lepton (ℓ), a photon (γ), significant transverse momentum imbalance (E̸T), and a jet identified as containing a b-quark, to SM predictions. The search uses data produced in proton-antiproton collisions at √s=1.96 TeV corresponding to 1.9 fb-1 of integrated luminosity taken with the CDF detector. We find 28 ℓγbE̸T 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, tt̅ +γ. In the data we observe 16 tt̅ γ 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 tt̅ γ cross section to be 0.15±0.08 pb. |
| |
|
Language
|
|
|
|
English
| |
|
Source (journal)
|
|
|
|
Physical review : D : particles, fields, gravitation, and cosmology / American Physical Society. - Ridge, N.Y., 2004 - 2015
Physical review : D : particles and fields. - Lancaster, Pa, 1970 - 2003
| |
|
Publication
|
|
|
|
Ridge, N.Y.
:
American Physical Society
,
2009
| |
|
ISSN
|
|
|
|
1550-7998
[print]
1550-2368
[online]
| |
|
Volume/pages
|
|
|
|
80
:1
(2009)
, p. 011102,1-011102,9
| |
|
ISI
|
|
|
|
000268618600002
| |
|
Full text (Publisher's DOI)
|
|
|
|
| |
|
Full text (open access)
|
|
|
|
| |
|