Production and decay of the 125 GeV Higgs boson in the littlest Higgs model with T-parity  

作　　者：曾庆国 杨硕 岳崇兴 陈连松 

机构地区：[1]Department of Physics, Liaoning Normal University [2]Department of Physics, Shangqiu Normal University [3]Physics Department, Dalian University [4]Center for High Energy Physics, Peking University

出　　处：《Chinese Physics C》2013年第5期28-34,共7页中国物理C（英文版）

基　　金：Supported by National Natural Science Foundation of China (10975067, 11175251);Postdoctoral Science Foundation of China(2012M510248);Natural Science Foundation of Liaoning Scientific Committee (201102114);Foundation of Liaoning Educational Committee (LT2011015)

摘　　要：Motivated by recent search results for the standard model （SM） Higgs boson at the Large Hadron Collider （LHC）, we revisit the Higgs phenomenology in the littlest Higgs model with T-parity （LHT）. We present the signal strength modifier ix, respectively, for the main search channels qq＇→ jjh → jjγγ, qq＇→Vh →Vγγ, qq＇→Vh→ Vbb, gg→ h→ γγ, and gg→h→ VV in the LHT model. It is found that an enhancement factor of 1.09-1.56 in the qq＇→jjh→jjγγ channel can be obtained for this model in Case B with parameter f in the range 500 1000 GeV. However, the rates for bb, ττ are significantly suppressed relative to the SM predictions, which are still consistent with the current sensitivity. It is hoped that this will be further tested with larger integrated luminosity at the LHC.Motivated by recent search results for the standard model （SM） Higgs boson at the Large Hadron Collider （LHC）, we revisit the Higgs phenomenology in the littlest Higgs model with T-parity （LHT）. We present the signal strength modifier ix, respectively, for the main search channels qq＇→ jjh → jjγγ, qq＇→Vh →Vγγ, qq＇→Vh→ Vbb, gg→ h→ γγ, and gg→h→ VV in the LHT model. It is found that an enhancement factor of 1.09-1.56 in the qq＇→jjh→jjγγ channel can be obtained for this model in Case B with parameter f in the range 500 1000 GeV. However, the rates for bb, ττ are significantly suppressed relative to the SM predictions, which are still consistent with the current sensitivity. It is hoped that this will be further tested with larger integrated luminosity at the LHC.

关 键 词：Higgs boson Large Hadron Collider littlest Higgs model with T-parity 

分 类 号：O571[理学—粒子物理与原子核物理]