t(t)over-barb(b)over-bar as a probe of new physics at the LHC

被引：4

作者：

Alvarez, Ezequiel ^{[1
]}

Estevez, Mariel ^{[1
]}

机构：

[1] UNSAM, ICAS, ECyT, Campus Miguelete 25 Mayo & Francia, RA-1650 San Martin, Buenos Aires, Argentina

来源：

PHYSICAL REVIEW D | 2017年 / 96卷 / 03期

关键词：

PP COLLISIONS; QUARK PAIR; ASSOCIATION;

D O I：

10.1103/PhysRevD.96.035016

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We study the t (t) over barb (b) over bar b final state at the LHC as a probe of new physics that couples mainly to the third generation of quarks. We analyze new physics simplified models with resonances of spin-0, -1 and -2. The sensitivity of the final states t (t) over barb (b) over bar , t (t) over bart (t) over bar , b (b) over barb (b) over bar and t (t) over bar on each of these models is used to identify an important region in parameter space that is still not excluded and where t (t) over barb (b) over bar is the most sensitive final state. We indicate possible experimental hints and discuss potential issues of observables that rely mainly on Monte Carlo predictions. A new observable is proposed that, at the price of requiring more statistics, reduces the impact of Monte Carlo predictions. We use preliminary 13 TeV results to give a raw estimate on the discovery reach and propose simple improvements on the observables.

引用

页数：16

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