Reconstruction of Higgs bosons in the di-tau channel via 3-prong decay

被引:7
|
作者
Gripaios, Ben [1 ]
Nagao, Keiko [2 ]
Nojiri, Mihoko [2 ,3 ,4 ]
Sakurai, Kazuki [5 ]
Webber, Bryan [1 ]
机构
[1] Univ Cambridge, Cavendish Lab, Cambridge CB3 0HE, England
[2] KEK Theory Ctr, Tsukuba, Ibaraki 3050801, Japan
[3] KEK, Grad Univ Adv Studies Sokendai IPNS, Tsukuba, Ibaraki 3050801, Japan
[4] Univ Tokyo, Todai Inst Adv Study, Kavli IPMU, Kashiwa, Chiba, Japan
[5] DESY, D-22607 Hamburg, Germany
来源
JOURNAL OF HIGH ENERGY PHYSICS | 2013年 / 03期
关键词
Higgs Physics; Standard Model;
D O I
10.1007/JHEP03(2013)106
中图分类号
O412 [相对论、场论]; O572.2 [粒子物理学];
学科分类号
摘要
We propose a method for reconstructing the mass of a particle, such as the Higgs boson, decaying into a pair of tau leptons, of which one subsequently undergoes a 3-prong decay. The kinematics is solved using information from the visible decay products, the missing transverse momentum, and the 3-prong tau decay vertex, with the detector resolution taken into account using a likelihood method. The method is shown to give good discrimination between a 125GeV Higgs boson signal and the dominant backgrounds, such as Z(0) decays to tau tau and W-+/- plus jets production. As a result, we find an improvement, compared to existing methods for this channel, in the discovery potential, as well as in measurements of the Higgs boson mass and production cross section times branching ratio.
引用
收藏
页数:18
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