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Constraints on anomalous HVV couplings from the production of Higgs bosons decaying to τ lepton pairs

CMS Collaboration; Sirunyan, A. M.; Tumasyan, A.; Adam, W.; Ambrogi, F.; Asilar, E.; Bergauer, T.; Brandstetter, J.; Dragicevic, M.; Erö, J.; Escalante Del Valle, A.; Flechl, M.; Frühwirth, R.; Ghete, V. M.; Hrubec, J.; Jeitler, M.; Krammer, N.; Krätschmer, I.; Liko, D.; ... mehr


A study is presented of anomalous HVV interactions of the Higgs boson, including its CP properties. The study uses Higgs boson candidates produced mainly in vector boson fusion and gluon fusion that subsequently decay to a pair of τ leptons. The data were recorded by the CMS experiment at the LHC in 2016 at a center-of-mass energy of 13 TeV and correspond to an integrated luminosity of 35.9 fb$^{-1}$. A matrix element technique is employed for the analysis of anomalous interactions. The results are combined with those from the H → 4ℓ decay channel presented earlier, yielding the most stringent constraints on anomalous Higgs boson couplings to electroweak vector bosons expressed as effective cross section fractions and phases: the CP-violating parameter f$_{a3}$ cos(φ$_{a3}$)= (0.00 ± 0.27) × 10$^{-3}$ and the CP-conserving parameters f$_{a2}$ cos(φ$_{a2}$)= (0.08(+1.04/-0.21))× 10$^{-3}$, f$_{ Λ1}$ cos(φ$_{ Λ1}$) = (0.00(+0.53/-0.09) × 10$^{-3}$, and f (Zy/Λ1)cos(φ(Zy/ Λ1) = (0.0(+1.1/-1.3)) × 10$^{-3}$,. The current dataset does not allow for precise constraints on CP properties in the gluon fusion process. The results are consistent with standard model expectations.

Verlagsausgabe §
DOI: 10.5445/IR/1000100628
Veröffentlicht am 09.12.2019
DOI: 10.1103/PhysRevD.100.112002
Zitationen: 36
Zitationen: 23
Cover der Publikation
Zugehörige Institution(en) am KIT Institut für Experimentelle Teilchenphysik (ETP)
Institut für Prozessdatenverarbeitung und Elektronik (IPE)
Publikationstyp Zeitschriftenaufsatz
Publikationsjahr 2019
Sprache Englisch
Identifikator ISSN: 2470-0010, 2470-0029
KITopen-ID: 1000100628
Erschienen in Physical review / D
Verlag American Physical Society (APS)
Band 100
Heft 11
Seiten Article: 112002
Bemerkung zur Veröffentlichung Gefördert durch SCOAP3
Vorab online veröffentlicht am 04.12.2019
Nachgewiesen in arXiv
Web of Science
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