CP-violating Higgs-gauge boson couplings in Hν(ν)over-bar production at three energy stages of CLIC

被引：0

作者：

Karadeniz, O. ^{[1
]}

Senol, A. ^{[1
]}

Oyulmaz, K. Y. ^{[1
]}

Denizli, H. ^{[1
]}

机构：

[1] Abant Izzet Baysal Univ, Dept Phys, TR-14280 Bolu, Turkey

来源：

EUROPEAN PHYSICAL JOURNAL C | 2020年 / 80卷 / 03期

关键词：

Bosons - Luminance - Tellurium compounds;

D O I：

10.1140/epjc/s10052-020-7740-1

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：

A phenomenological study of CP-violating dimension-six operators via the e+e-->nu nu over bar H process is performed in a model-independent Standard Model effective field theory framework at all energy stages of CLIC using the updated baseline integrated luminosities. All signal and relevant background events are generated in MadGraph and passed through PYTHIA for parton showering and hadronization at parton level. Detector effects are considered via tuned CLIC detector cards in Delphes. Since we reconstruct the Higgs boson from a pair of b-jets, limits on CP-violating dimension-six couplings are obtained at three b-tagging working points: tight, medium and loose defined in the CLIC Delphes card for all three energy stages of CLIC. Our best 95 % C.L. limits at the loose working point (90 % b-tagging efficiency) on cHW and cHB are [-7.0x10-3 & x37e;7.0x10-3]. Considering a 0.3 % systematic uncertainty from possible experimental sources worsens the limits on these couplings by a factor of two.

引用

页数：13

共 69 条

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