Study the effect of beam energy spread and detector resolution on the search for Higgs boson decays to invisible particles at a future e+e- circular collider

被引：0
|
作者：
Cerri, Olmo [1 ]
de Gruttola, Michele [2 ]
Pierini, Maurizio [2 ]
Podo, Alessandro [1 ]
Rolandi, Gigi [1 ,2 ]
机构：
[1] Scuola Normale Super Pisa, Pisa, Italy
[2] CERN, Geneva, Switzerland
来源：
EUROPEAN PHYSICAL JOURNAL C | 2017年 / 77卷 / 02期
关键词：
D O I：
10.1140/epjc/s10052-017-4680-5
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 study the expected sensitivity to measure the branching ratio of Higgs boson decays to invisible particles at a future circular e(+)e(-) collider (FCC-ee) in the process e(+)e(-) -> HZ with Z -> l (+)l(-) (l = e or mu) using an integrated luminosity of 3.5 ab(-1) at a center-of-mass energy root s = 240 GeV. The impact of the energy spread of the FCC-ee beam and of the resolution in the reconstruction of the leptons is discussed. The minimum branching ratio for a 5s observation after 3.5 ab(-1) of data taking is 1.7 +/- 0.1%(stat + syst). The branching ratio exclusion limit at 95% CL is 0.63 +/- 0.22%((stat + syst)).
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