English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Plus monthly

Global: Zendy Tools annual

Global: Zendy Tools monthly

Global: Zendy Free Plan

The measurement of forward-backward asymmetry in the top and anti-top quark($t \bar{t}$) production has been recently reconfirmed by the CDF Collaborationand shows a more than $3\sigma$ deviation from the Standard Model(SM)prediction in the large $t \bar{t}$ invariant mass region. Models with newW$^{\prime}$ or Z$^{\prime}$ bosons have been invoked to explain thisdeviation. In the context of these models we perform a $\chi^2$ analysis withall the available experimental numbers in different $\Delta Y$ and $M_{t\bar{t}}$ bins. We show that for the $Z^{\prime}$ model the region of parameterspace which explain the Tevatron asymmetry can be probed in the same sign topproduction channel by Tevatron itself. Moreover, we consider a recentlyproposed observable, the one sided forward-backward asymmetry ($A_{OFB}$) atthe LHC and conclude that both the W$^{\prime}$ and Z$^{\prime}$ models canlead to sizable $A_{OFB}$ even at the LHC running at a center of mass energy of7 TeV for the model parameters consistent with the Tevatron measurements.

Top quark forward-backward asymmetry at Tevatron and its implications at the LHC