Search for neutral resonances decaying into a Z boson and a pair of b jets or τ leptons

A search is performed for a new resonance decaying into a lighter resonance and a Z boson. Two channels are studied, targeting the decay of the lighter resonance into either a pair of oppositely charged τ leptons or a bb‾ pair. The Z boson is identified via its decays to electrons or muons. The sear...

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Veröffentlicht in:	Physics letters. B 2016-08, Vol.759 (C), p.369-394
Hauptverfasser:	Sirunyan, A.M., Hartl, C., Jeitler, M., Knutsson, A., Karapostoli, G., Bruno, G., Giammanco, A., Mertens, A., Pin, A., Santoro, A., Bernardes, C.A., Jiang, C.H., Tao, J., El-khateeb, E., Salama, E., Tuominen, E., Jarry, P., Antropov, I., Ortona, G., Agram, J.-L., Buttignol, M., Geisler, M., Husemann, U., Plagge, M., Molnar, J., Bansal, S., Kalsi, A.K., Garg, R.B., Cuffiani, M., Giacomelli, P., Grandi, C., Marcellini, S., Tosi, N., Gelli, S., Bellan, R., La Licata, C., Go, Y., Kim, Y., Yoo, H.D., Lee, J.S.H., Ahmed, I., Kazana, M., Lanev, A., Sulimov, V., Gavrilov, V., Mesyats, G., Belyaev, A., Bloch, P., De Visscher, S., Kirschenmann, H., Meijers, F., Sakulin, H., Sharma, A., Silva, P., Wöhri, H.K., Kaestli, H.C., Rossini, M., Takahashi, M., Caminada, L., Kaya, M., Paramesvaran, S., Bundock, A., Elwood, A., Vazquez Acosta, M., Leggat, D., Teodorescu, L., Fantasia, C., Sulak, L., Narain, M., Calderon De La Barca Sanchez, M., Lander, R., Cittolin, S., Jayatilaka, B., Johnson, M., Bortignon, P., Low, J.F., Hagopian, V., Gauthier, L., Nachtman, J., Anderson, I., Feng, L., Bean, A., Malek, M., Sanders, S., Baden, A., Apyan, A., Levin, A., Luckey, P.D., Lesko, Z., Iashvili, I., Hortiangtham, A., Trocino, D., Karmgard, D.J., Smith, G., Rodenburg, M., Krutelyov, V., Snook, B., Ledovskoy, A., Dodd, L., Hall-Wilton, R.
Format:	Artikel
Sprache:	eng
Schlagworte:	2HDM b-Tagging Bosons BSM Channels CMS Cross sections Decay Deviation Elementary particles Higgs High Energy Physics - Experiment Lepton Leptons Physics PHYSICS OF ELEMENTARY PARTICLES AND FIELDS Searching Tau
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Beschreibung
Zusammenfassung:	A search is performed for a new resonance decaying into a lighter resonance and a Z boson. Two channels are studied, targeting the decay of the lighter resonance into either a pair of oppositely charged τ leptons or a bb‾ pair. The Z boson is identified via its decays to electrons or muons. The search exploits data collected by the CMS experiment at a centre-of-mass energy of 8 TeV, corresponding to an integrated luminosity of 19.8 fb−1. No significant deviations are observed from the standard model expectation and limits are set on production cross sections and parameters of two-Higgs-doublet models.
ISSN:	0370-2693 1873-2445
DOI:	10.1016/j.physletb.2016.05.087