Test of CP invariance in vectorboson fusion production of the Higgs boson using the Optimal Observable method in the ditau decay channel with the ATLAS detector
(2016) In European Physical Journal C 76(12). Abstract
 A test of CP invariance in Higgs boson production via vectorboson fusion using the method of the Optimal Observable is presented. The analysis exploits the decay mode of the Higgs boson into a pair of τ leptons and is based on 20.3 fb  1 of proton–proton collision data at s = 8 TeV collected by the ATLAS experiment at the LHC. Contributions from CPviolating interactions between the Higgs boson and electroweak gauge bosons are described in an effective field theory framework, in which the strength of CP violation is governed by a single parameter d~. The mean values and distributions of CPodd observables agree with the expectation in the Standard Model and show no sign of CP violation. The CPmixing parameter d~ is constrained to the... (More)
 A test of CP invariance in Higgs boson production via vectorboson fusion using the method of the Optimal Observable is presented. The analysis exploits the decay mode of the Higgs boson into a pair of τ leptons and is based on 20.3 fb  1 of proton–proton collision data at s = 8 TeV collected by the ATLAS experiment at the LHC. Contributions from CPviolating interactions between the Higgs boson and electroweak gauge bosons are described in an effective field theory framework, in which the strength of CP violation is governed by a single parameter d~. The mean values and distributions of CPodd observables agree with the expectation in the Standard Model and show no sign of CP violation. The CPmixing parameter d~ is constrained to the interval ( 0.11 , 0.05) at 68% confidence level, consistent with the Standard Model expectation of d~ = 0. © 2016, CERN for the benefit of the ATLAS collaboration. (Less)
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http://lup.lub.lu.se/record/c133108d12284e4fa3e4f2f72e6bccd2
 author
 organization
 publishing date
 2016
 type
 Contribution to journal
 publication status
 published
 subject
 in
 European Physical Journal C
 volume
 76
 issue
 12
 publisher
 Springer
 external identifiers

 scopus:85002412629
 ISSN
 14346044
 DOI
 10.1140/epjc/s1005201644995
 language
 English
 LU publication?
 yes
 id
 c133108d12284e4fa3e4f2f72e6bccd2
 date added to LUP
 20170705 13:32:35
 date last changed
 20171114 09:56:31
@article{c133108d12284e4fa3e4f2f72e6bccd2, abstract = {A test of CP invariance in Higgs boson production via vectorboson fusion using the method of the Optimal Observable is presented. The analysis exploits the decay mode of the Higgs boson into a pair of τ leptons and is based on 20.3 fb  1 of proton–proton collision data at s = 8 TeV collected by the ATLAS experiment at the LHC. Contributions from CPviolating interactions between the Higgs boson and electroweak gauge bosons are described in an effective field theory framework, in which the strength of CP violation is governed by a single parameter d~. The mean values and distributions of CPodd observables agree with the expectation in the Standard Model and show no sign of CP violation. The CPmixing parameter d~ is constrained to the interval ( 0.11 , 0.05) at 68% confidence level, consistent with the Standard Model expectation of d~ = 0. © 2016, CERN for the benefit of the ATLAS collaboration.}, articleno = {658}, author = {Aad, G and Abbott, B. and Abdinov, O and Abdallah, J and Abeloos, B and Aben, R and Åkesson, Torsten and Bocchetta, Simona and BRYNGEMARK, LENE and Doglioni, Caterina and Floderus, Anders and Hawkins, Anthony and Hedberg, Vincent and Ivarsson, Jenny and Jarlskog, Göran and Lytken, Else and Mjörnmark, Ulf and Smirnova, Oxana and Viazlo, Oleksandr and , }, issn = {14346044}, language = {eng}, number = {12}, publisher = {Springer}, series = {European Physical Journal C}, title = {Test of CP invariance in vectorboson fusion production of the Higgs boson using the Optimal Observable method in the ditau decay channel with the ATLAS detector}, url = {http://dx.doi.org/10.1140/epjc/s1005201644995}, volume = {76}, year = {2016}, }