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Search for doubly charged higgs boson production in multi-lepton final states with the atlas detector using proton-proton collisions at root s=13tev

文献类型:期刊论文

作者Aaboud, M.196,197; Aad, G.; Abbott, B.159; Abdinov, O.16; Abeloos, B.163; Abidi, S. H.228; AbouZeid, O. S.200; Abraham, N. L.217; Abramowicz, H.221; Abreu, H.220
刊名European physical journal c
出版日期2018-03-10
卷号78期号:3页码:34
ISSN号1434-6044
DOI10.1140/epjc/s10052-018-5661-z
通讯作者Aaboud, m.()
英文摘要A search for doubly charged higgs bosons with pairs of prompt, isolated, highly energetic leptons with the same electric charge is presented. the search uses a proton-proton collision data sample at a centre-of-mass energy of 13 tev corresponding to 36.1 fb(-1) of integrated luminosity recorded in 2015 and 2016 by the atlas detector at the lhc. this analysis focuses on the decays h-+/-+/- -> e(+/-)e(+/-), h-+/-+/- -> e(+/-)mu(+/-) and h-+/-+/- -> mu(+/-)mu(+/-), fitting the dilepton mass spectra in several exclusive signal regions. no significant evidence of a signal is observed and corresponding limits on the production cross-section and consequently a lower limit on m(h-+/-+/-) are derived at 95% confidence level. with l(+/-)l(+/-) = e(+/-)e(+/-)/mu(+/-)mu(+/-)/e(+/-)mu(+/-), the observed lower limit on the mass of a doubly charged higgs boson only coupling to left-handed leptons varies from 770 to 870gev (850gev expected) for b(h-+/-+/- -> l(+/-)l(+/-)) = 100% and both the expected and observed mass limits are above 450gev for b(h-+/-+/- -> l(+/-)l(+/-)) = 10% and any combination of partial branching ratios.
WOS关键词MAJORANA NEUTRINO MASSES ; CROSS-SECTION ; LHC ; MODELS ; VIOLATION ; SYMMETRY
WOS研究方向Physics
WOS类目Physics, Particles & Fields
语种英语
出版者SPRINGER
WOS记录号WOS:000427620000001
URI标识http://www.irgrid.ac.cn/handle/1471x/2178185
专题高能物理研究所
通讯作者Aaboud, M.
作者单位1.CERN, CH-1211 Geneva 23, Switzerland
2.Univ Adelaide, Dept Phys, Adelaide, SA, Australia
3.SUNY Albany, Phys Dept, Albany, NY 12222 USA
4.Univ Alberta, Dept Phys, Edmonton, AB, Canada
5.Ankara Univ, Dept Phys, Ankara, Turkey
6.Istanbul Aydin Univ, Istanbul, Turkey
7.TOBB Univ Econ & Technol, Div Phys, Ankara, Turkey
8.CNRS, IN2P3, LAPP, Annecy Le Vieux, France
9.Univ Savoie Mt Blanc, Annecy Le Vieux, France
10.Argonne Natl Lab, Div High Energy Phys, Argonne, IL 60439 USA
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GB/T 7714
Aaboud, M.,Aad, G.,Abbott, B.,et al. Search for doubly charged higgs boson production in multi-lepton final states with the atlas detector using proton-proton collisions at root s=13tev[J]. European physical journal c,2018,78(3):34.
APA Aaboud, M..,Aad, G..,Abbott, B..,Abdinov, O..,Abeloos, B..,...&Haddad, N..(2018).Search for doubly charged higgs boson production in multi-lepton final states with the atlas detector using proton-proton collisions at root s=13tev.European physical journal c,78(3),34.
MLA Aaboud, M.,et al."Search for doubly charged higgs boson production in multi-lepton final states with the atlas detector using proton-proton collisions at root s=13tev".European physical journal c 78.3(2018):34.

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