Evidence for the Higgs-boson Yukawa coupling to tau leptons with the ATLAS detector

Aad, G.; Agatonović-Jovin, Tatjana; Bozic, I.; Dimitrievska, A.; Krstić, Jelena; Mamužić, Judita; Marjanovic, M.; Popovic, D. S.; Sijacki, Dj.; Simic, Lj.; Vranjes, N.; Vranješ Milosavljević, Marija

doi:10.1007/JHEP04(2015)117

2015

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Authors

Aad, G.

Agatonović-Jovin, Tatjana

Bozic, I.
Dimitrievska, A.
Krstić, Jelena
Mamužić, Judita

Marjanovic, M.
Popovic, D. S.
Sijacki, Dj.
Simic, Lj.
Vranjes, N.

Vranješ Milosavljević, Marija

ATLAS Collaboration (ukupan broj autora: 2886)

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Abstract

Results of a search for H - GT tau tau decays are presented, based on the full set of proton-proton collision data recorded by the ATLAS experiment at the LHC during 2011 and 2012. The data correspond to integrated luminosities of 4.5 fb(-1) and 20.3 fb(-1) at centre-of-mass energies of root s = 7TeV and root s = 8 TeV respectively. All combinations of leptonic (tau - GT l nu(nu) over bar with l = e, mu) and hadronic (tau - GT hadrons nu) tau decays are considered. An excess of events over the expected background from other Standard Model processes is found with an observed (expected) significance of 4.5 (3.4) standard deviations. This excess provides evidence for the direct coupling of the recently discovered Higgs boson to fermions. The measured signal strength, normalised to the Standard Model expectation, of mu = 1.43(-0.37)(+0.43) is consistent with the predicted Yukawa coupling strength in the Standard Model.

Keywords:

Hadron-Hadron Scattering

Source:
Journal of High Energy Physics, 2015, 4

Projects:

ANPCyT, Argentina, YerPhI, Armenia, ARC, Australia, BMWFW, Austria, FWF, Austria, ANAS, Azerbaijan, SSTC, Belarus, CNPq, Brazil, FAPESP, Brazil, NSERC, Canada, NRC, Canada, CFI, Canada, CERN, CONICYT, Chile, CAS, China, MOST, China, NSFC, China, COLCIENCIAS, Colombia, MSMT CR, Czech Republic, MPO CR, Czech Republic, VSC CR, Czech Republic, DNRF, Denmark, DNSRC, Denmark, Lundbeck Foundation, Denmark, EPLANET, ERC, NSRF, European Union, IN2P3-CNRS, France, CEA-DSM/IRFU, France, GNSF, Georgia, BMBF, Germany, DFG, Germany, HGF, Germany, MPG, Germany, AvH Foundation, Germany, GSRT, Greece, NSRF, Greece, RGC, China, Hong Kong SAR, China, ISF, Israel, MINERVA, Israel, GIF, Israel, I-CORE, Israel, Benoziyo Center, Israel, INFN, Italy, MEXT, Japan, JSPS, Japan, CNRST, Morocco, FOM, Netherlands, NWO, Netherlands, BRF, Norway, RCN, Norway, MNiSW, Poland, NCN, Poland, GRICES, Portugal, FCT, Portugal, MNE/IFA, Romania, MES of Russia, ROSATOM, Russian Federation, JINR, MSTD, Serbia, MSSR, Slovakia, ARRS, Slovenia, MIZ. S, Slovenia, DST/NRF, South Africa, MINECO, Spain, SRC, Sweden, Wallenberg Foundation, Sweden, SER Switzerland, SNSF, Switzerland, Cantons of Bern and Geneva, Switzerland, NSC, Taiwan, TAEK, Turkey, STFC, United Kingdom, Royal Society, United Kingdom, Lever-hulme Trust, United Kingdom, DOE, United States of America, NSF, United States of America, ICREA

DOI: 10.1007/JHEP04(2015)117

ISSN: 1029-8479

WoS: 000353557400001

Scopus: 2-s2.0-84928736502

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TY  - JOUR
AU  - Aad, G.
AU  - Agatonović-Jovin, Tatjana
AU  - Bozic, I.
AU  - Dimitrievska, A.
AU  - Krstić, Jelena
AU  - Mamužić, Judita
AU  - Marjanovic, M.
AU  - Popovic, D. S.
AU  - Sijacki, Dj.
AU  - Simic, Lj.
AU  - Vranjes, N.
AU  - Vranješ Milosavljević, Marija
PY  - 2015
UR  - http://vinar.vin.bg.ac.rs/handle/123456789/515
AB  - Results of a search for H - GT tau tau decays are presented, based on the full set of proton-proton collision data recorded by the ATLAS experiment at the LHC during 2011 and 2012. The data correspond to integrated luminosities of 4.5 fb(-1) and 20.3 fb(-1) at centre-of-mass energies of root s = 7TeV and root s = 8 TeV respectively. All combinations of leptonic (tau - GT l nu(nu) over bar with l = e, mu) and hadronic (tau - GT hadrons nu) tau decays are considered. An excess of events over the expected background from other Standard Model processes is found with an observed (expected) significance of 4.5 (3.4) standard deviations. This excess provides evidence for the direct coupling of the recently discovered Higgs boson to fermions. The measured signal strength, normalised to the Standard Model expectation, of mu = 1.43(-0.37)(+0.43) is consistent with the predicted Yukawa coupling strength in the Standard Model.
T2  - Journal of High Energy Physics
T1  - Evidence for the Higgs-boson Yukawa coupling to tau leptons with the ATLAS detector
IS  - 4
DO  - 10.1007/JHEP04(2015)117
ER  -

@article{
author = "Aad, G. and Agatonović-Jovin, Tatjana and Bozic, I. and Dimitrievska, A. and Krstić, Jelena and Mamužić, Judita and Marjanovic, M. and Popovic, D. S. and Sijacki, Dj. and Simic, Lj. and Vranjes, N. and Vranješ Milosavljević, Marija",
year = "2015",
url = "http://vinar.vin.bg.ac.rs/handle/123456789/515",
abstract = "Results of a search for H - GT tau tau decays are presented, based on the full set of proton-proton collision data recorded by the ATLAS experiment at the LHC during 2011 and 2012. The data correspond to integrated luminosities of 4.5 fb(-1) and 20.3 fb(-1) at centre-of-mass energies of root s = 7TeV and root s = 8 TeV respectively. All combinations of leptonic (tau - GT l nu(nu) over bar with l = e, mu) and hadronic (tau - GT hadrons nu) tau decays are considered. An excess of events over the expected background from other Standard Model processes is found with an observed (expected) significance of 4.5 (3.4) standard deviations. This excess provides evidence for the direct coupling of the recently discovered Higgs boson to fermions. The measured signal strength, normalised to the Standard Model expectation, of mu = 1.43(-0.37)(+0.43) is consistent with the predicted Yukawa coupling strength in the Standard Model.",
journal = "Journal of High Energy Physics",
title = "Evidence for the Higgs-boson Yukawa coupling to tau leptons with the ATLAS detector",
number = "4",
doi = "10.1007/JHEP04(2015)117"
}

Aad G, Agatonović-Jovin T, Bozic I, Dimitrievska A, Krstić J, Mamužić J, Marjanovic M, Popovic DS, Sijacki D, Simic L, Vranjes N, Vranješ Milosavljević M. Evidence for the Higgs-boson Yukawa coupling to tau leptons with the ATLAS detector. Journal of High Energy Physics. 2015;(4)

Aad, G., Agatonović-Jovin, T., Bozic, I., Dimitrievska, A., Krstić, J., Mamužić, J., Marjanovic, M., Popovic, D. S., Sijacki, Dj., Simic, Lj., Vranjes, N.,& Vranješ Milosavljević, M. (2015). Evidence for the Higgs-boson Yukawa coupling to tau leptons with the ATLAS detector.
Journal of High Energy Physics(4).
https://doi.org/10.1007/JHEP04(2015)117

Aad G., Agatonović-Jovin Tatjana, Bozic I., Dimitrievska A., Krstić Jelena, Mamužić Judita, Marjanovic M., Popovic D. S., Sijacki Dj., Simic Lj., Vranjes N., Vranješ Milosavljević Marija, "Evidence for the Higgs-boson Yukawa coupling to tau leptons with the ATLAS detector", no. 4 (2015),
https://doi.org/10.1007/JHEP04(2015)117 .