|
| | | | |
| | | |
| Stat |
Members: 3645
Articles: 2'502'364
Articles rated: 2609
23 April 2024 |
|
| | | | |
|
Article overview
| |
|
|
Non-resonant New Physics in Top Pair Production at Hadron Colliders | | Céline Degrande
; Jean-Marc Gérard
; Christophe Grojean
; Fabio Maltoni
; Géraldine Servant
; | | Date: |
Fri, 29 Oct 2010 19:59:28 GMT (1816kb) | | Abstract: | We use top quark pair production as a probe of top-philic non-resonant new
physics. Following a low energy effective field theory approach, we calculate
several key observables in top quark pair production at hadron colliders (e.g.,
total cross section, ttbar invariant mass distribution, forward-backward
asymmetry, spin correlations) including the interference of the Standard Model
with dimension-six operators. We determine the LHC reach in probing new physics
after having taken into account the Tevatron constraints. In particular, we
show that the gluon fusion process gg -> ttbar which remains largely
unconstrained at the Tevatron is affected by only one top-philic dimension-six
operator, the chromo-magnetic moment of the top quark. This operator can be
further constrained by the LHC data as soon as a precision of about 20% is
reached for the total ttbar cross-section. While our approach is general and
model-independent, it is particularly relevant to models of Higgs and top
compositeness, which we consider in detail, also in connection with ttbar ttbar
and ttbar bbbar production. | | Source: | arXiv, 1010.6304 | | Services: | Forum | Review | PDF | Favorites | |
|
|
No review found.
Did you like this article?
Note: answers to reviews or questions about the article must be posted in the forum section.
Authors are not allowed to review their own article. They can use the forum section.
browser Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.com)
|
| |
|
|
|
|
News, job offers and information for researchers and scientists:
| |
REGISTER