Probing CP violation in h -> gamma gamma with converted photons

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	Probing CP violation in h -> gamma gamma with converted photons
	Bishara, F; Grossman, Y; Harnik, R; Robinson, DJ; Shu, J; Zupan, J
刊名	JOURNAL OF HIGH ENERGY PHYSICS
	2014
期号	4 页码:84
关键词	MODEL HIGGS-BOSON TOP-QUARK PAIR PRODUCTION DECAY MODE MASS TAU PARITY LHC TAUBARTAU EVENTS
ISSN号	1029-8479
通讯作者	Bishara, F (reprint author), Univ Cincinnati, Dept Phys, 345 Clifton Ct, Cincinnati, OH 45221 USA.
英文摘要	We study Higgs diphoton decays, in which both photons undergo nuclear conversion to electron-positron pairs. The kinematic distribution of the two electron-positron pairs may be used to probe the CP violating (CPV) coupling of the Higgs to photons, that may be produced by new physics. Detecting CPV in this manner requires interference between the spin-polarized helicity amplitudes for both conversions. We derive leading order, analytic forms for these amplitudes. In turn, we obtain compact, leading-order expressions for the full process rate. While performing experiments involving photon conversions may be challenging, we use the results of our analysis to construct experimental cuts on certain observables that may enhance sensitivity to CPV. We show that there exist regions of phase space on which sensitivity to CPV is of order unity. The statistical sensitivity of these cuts are verified numerically, using dedicated Monte-Carlo simulations.
学科主题	Physics
收录类别	SCI
资助信息	Fermilab Fellowship in Theoretical Physics; U.S. National Science Foundation [PHY-0757868, PHY-1002399, PHY-1151392]; United States-Israel Binational Science Foundation (BSF) [2010221]; National Science Foundation [NSF PHY11-25915]; Fermi Research Alliance, LLC [De-AC02-07CH11359]
原文出处	http://dx.doi.org/10.1007/JHEP04(2014)084
语种	英语
WOS记录号	WOS:000334502000003
公开日期	2015-06-03
内容类型	期刊论文
源URL	[http://ir.itp.ac.cn/handle/311006/15785]
专题	理论物理研究所_理论物理所1978-2010年知识产出
推荐引用方式 GB/T 7714	Bishara, F,Grossman, Y,Harnik, R,et al. Probing CP violation in h -> gamma gamma with converted photons[J]. JOURNAL OF HIGH ENERGY PHYSICS,2014(4):84.
APA	Bishara, F,Grossman, Y,Harnik, R,Robinson, DJ,Shu, J,&Zupan, J.(2014).Probing CP violation in h -> gamma gamma with converted photons.JOURNAL OF HIGH ENERGY PHYSICS(4),84.
MLA	Bishara, F,et al."Probing CP violation in h -> gamma gamma with converted photons".JOURNAL OF HIGH ENERGY PHYSICS .4(2014):84.