Probing the CP violating Hγγ coupling using interferometry
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摘要
The diphoton invariant mass distribution from the interference between gg→H→γγ and gg→γγ is almost antisymmetric around the Higgs mass MH.We propose a new observable Aint,the ratio of the sign-reversed integral around MH(e.g.■)and the cross-section of the Higgs signal,to quantify this effect.We study Aint both in the Standard Model(SM)and new physics with various CP violating Hγγ couplings.Aint in SM could reach a value of 10%,while for CP violating Hyy coupling Aint could range from 10% to-10%,which could probably be detected in the HL-LHC experiments.Aint with both CP violating Hγγ and Hgg couplings is also studied,and its range of values is found to be slightly larger.
The diphoton invariant mass distribution from the interference between gg→H→γγ and gg→γγ is almost antisymmetric around the Higgs mass MH.We propose a new observable Aint,the ratio of the sign-reversed integral around MH(e.g.■)and the cross-section of the Higgs signal,to quantify this effect.We study Aint both in the Standard Model(SM)and new physics with various CP violating Hγγ couplings.Aint in SM could reach a value of 10%,while for CP violating Hyy coupling Aint could range from 10% to-10%,which could probably be detected in the HL-LHC experiments.Aint with both CP violating Hγγ and Hgg couplings is also studied,and its range of values is found to be slightly larger.
The diphoton invariant mass distribution from the interference between gg→H→γγ and gg→γγ is almost antisymmetric around the Higgs mass MH.We propose a new observable Aint,the ratio of the sign-reversed integral around MH(e.g.■)and the cross-section of the Higgs signal,to quantify this effect.We study Aint both in the Standard Model(SM)and new physics with various CP violating Hγγ couplings.Aint in SM could reach a value of 10%,while for CP violating Hyy coupling Aint could range from 10% to-10%,which could probably be detected in the HL-LHC experiments.Aint with both CP violating Hγγ and Hgg couplings is also studied,and its range of values is found to be slightly larger.
引文
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41 CMS Collaboration,C.Collaboration,CMS-PAS-HIG-16-040
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43 ATLAS Collaboration,ATLAS,Tech.Rep.ATL-PHYS-PUB-2013-014,CERN,Geneva,Oct,2013.http://cds.cern.ch/record/1611186
2Planck Collaboration,P.A.R.Ade et al,Astron.Astrophys.,571:A16(2014),arXiv:1303.5076[astro-ph.CO]
3 E.Accomando et al,arXiv:hep-ph/0608079[hep-ph]
4D.E.Morrissey and M.J.Ramsey-Musolf,New J.Phys.,14:125003(2012),arXiv:1206.2942[hep-ph]
5Y.Gao,A.V.Gritsan,Z.Guo et al,Phys.Rev.D,81:075022(2010),arXiv:1001.3396[hep-ph]
6S.Bolognesi,Y.Gao,A.V.Gritsan et al,Phys.Rev.D,86:095031(2012),arXiv:1208.4018[hep-ph]
7A.V.Gritsan,R.Rntsch,M.Schulze et al,Phys.Rev.D,94(5):055023(2016),arXiv:1606.03107[hep-ph]
8J.Ellis and T.You,JHEP,06:103(2013),arXiv:1303.3879[hepph]
9M.R.Buckley and D.Goncalves,Phys.Rev.Lett.,116(9):091801(2016),arXiv:1507.07926[hep-ph]
10G.Li,H.-R.Wang,and S.-h.Zhu,Phys.Rev.D,93(5):055038(2016),arXiv:1506.06453[hep-ph]
11A.Hayreter,X.-G.He,and G.Valencia,Phys.Rev.D,94(7):075002(2016),arXiv:1606.00951[hep-ph]
12K.Hagiwara,K.Ma,and S.Mori,Phys.Rev.Lett.,118(17):171802(2017),arXiv:1609.00943[hep-ph]
13M.J.Dolan,P.Harris,M.Jankowiak et al,Phys.Rev.D,90:073008(2014),arXiv:1406.3322[hep-ph]
14Y.Chen,A.Falkowski,I.Low et al,Phys.Rev.D,90(11):113006(2014),arXiv:1405.6723[hep-ph]
15A.Yu.Korchin and V.A.Kovalchuk,Eur.Phys.J.C,74(11):3141(2014),arXiv:1408.0342[hep-ph]
16X.Chen,G.Li,and X.Wan,Phys.Rev.D,96(5):055023(2017),arXiv:1705.01254[hep-ph]
17L.Bian,N.Chen,and Y.Zhang,Phys.Rev.D,96(9):095008(2017),arXiv:1706.09425[hep-ph]
18J.Brehmer,F.Kling,T.Plehn et al,Phys.Rev.D,97(9):095017(2018),arXiv:1712.02350[hep-ph]
19CMS Collaboration,V.Khachatryan et al,Phys.Rev.D,92(1):012004(2015),arXiv:1411.3441[hep-ex]
20CMS Collaboration,V.Khachatryan et al,Phys.Lett.B,759:672-696(2016),arXiv:1602.04305[hep-ex]
21 CMS Collaboration,A.M.Sirunyan et al,Phys.Lett.B,775:1-24(2017),arXiv:1707.00541[hep-ex]
22 CMS Collaboration,arXiv:1901.00174
23ATLAS Collaboration,G.Aad et al,Eur.Phys.J.C,76(12):658(2016),arXiv:1602.04516[hep-ex]
24ATLAS Collaboration,M.Aaboud et al,JHEP,03:095(2018),ar Xiv:1712.02304[hep-ex]
25M.B.Voloshin,Phys.Rev.D,86:093016(2012),ar Xiv:1208.4303[hep-ph]
26F.Bishara,Y.Grossman,R.Harnik et al,JHEP,04:084(2014),ar Xiv:1312.2955[hep-ph]
27Y.Chen,R.Harnik,and R.Vega-Morales,Phys.Rev.Lett.,113(19):191801(2014),arXiv:1404.1336[hep-ph]
28D.A.Dicus and S.S.D.Willenbrock,Phys.Rev.D,37:1801(1988)
29L.J.Dixon and M.S.Siu,Phys.Rev.Lett.,90:252001(2003),ar Xiv:hep-ph/0302233[hep-ph]
30S.P.Martin,Phys.Rev.D,86:073016(2012),ar Xiv:1208.1533[hep-ph]
31D.de Florian,N.Fidanza,R.J.Hernndez-Pinto et al,Eur.Phys.J.C,73(4):2387(2013),arXiv:1303.1397[hep-ph]
32S.P.Martin,Phys.Rev.D,88(1):013004(2013),ar Xiv:1303.3342[hep-ph]
33L.J.Dixon and Y.Li,Phys.Rev.Lett.,111:111802(2013),arXiv:1305.3854[hep-ph]
34J.Campbell,M.Carena,R.Harnik et al,arXiv:1704.08259[hepph]
35A.Djouadi,J.Ellis,and J.Quevillon,JHEP,07:105(2016),arXiv:1605.00542[hep-ph]
36B.Lillie,J.Shu,and T.M.P.Tait,Phys.Rev.D,76:115016(2007),arXiv:0706.3960[hep-ph]
37L.Bian,D.Liu,J.Shu et al,Int.J.Mod.Phys.,31(14n15):1650083(2016),arXiv:1509.02787[hep-ph]
38Z.Bern,A.De Freitas,and L.J.Dixon,JHEP,09:037(2001),arXiv:hep-ph/0109078[hep-ph]
39Z.Bern,L.J.Dixon,and C.Schmidt,Phys.Rev.D,66:074018(2002),arXiv:hep-ph/0206194[hep-ph]
40J.M.Campbell,R.K.Ellis,and C.Williams,JHEP,07:018(2011),arXiv:1105.0020[hep-ph]
41 CMS Collaboration,C.Collaboration,CMS-PAS-HIG-16-040
42ATLAS Collaboration,M.Aaboud et al,arXiv:1802.04146[hepex]
43 ATLAS Collaboration,ATLAS,Tech.Rep.ATL-PHYS-PUB-2013-014,CERN,Geneva,Oct,2013.http://cds.cern.ch/record/1611186