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Search for the associated production of the Higgs boson and a vector boson in proton-proton collisions at $\sqrt{s}=$ 13 TeV via Higgs boson decays to $\tau$ leptons

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Bakhshiansohi, Hamed [UCL] Bondu, Olivier [UCL] Brochet, Sébastien [UCL] Bruno, Giacomo [UCL] Caputo, Claudio [UCL] David, Pieter [UCL] Delaere, Christophe [UCL] Delcourt, Martin [UCL] Giammanco, Andrea [UCL] Krintiras, Georgios [UCL] Lemaitre, Vincent [UCL] Magitteri, Alessio [UCL] Mertens, Alexandre [UCL] Musich, Marco [UCL] Piotrzkowski, Krzysztof [UCL] Saggio, Alessia [UCL] Vidal Marono, Miguel [UCL] Wertz, Sébastien [UCL] Zobec, Joze [UCL] CMS Collaboration

A search for the standard model Higgs boson produced in association with a W or a Z boson and decaying to a pair of τ leptons is performed. A data sample of proton-proton collisions collected at $ \sqrt{s} $ = 13 TeV by the CMS experiment at the CERN LHC is used, corresponding to an integrated luminosity of 35.9 fb$^{−1}$. The signal strength is measured relative to the expectation for the standard model Higgs boson, yielding μ = 2.5$_{− 1.3}^{+ 1.4}$ . These results are combined with earlier CMS measurements targeting Higgs boson decays to a pair of τ leptons, performed with the same data set in the gluon fusion and vector boson fusion production modes. The combined signal strength is μ = 1.24$_{− 0.27}^{+ 0.29}$ (1.00$_{− 0.23}^{+ 0.24}$ expected), and the observed significance is 5.5 standard deviations (4.8 expected) for a Higgs boson mass of 125 GeV.

Document type Article de périodique (Journal article) – Article de recherche
Access type Accès libre
Publication date 2019
Language Anglais
Journal information "Journal of High Energy Physics" - Vol. 1906, p. 093 (2019)
Peer reviewed yes
e-issn 1029-8479
Publication status Publié
Affiliation UCL - SST/IRMP - Institut de recherche en mathématique et physique
Keywords p p: colliding beams ; Higgs particle: hadroproduction ; vector boson: associated production ; W: associated production ; Z0: associated production ; Higgs particle: leptonic decay ; p p: scattering ; tau: pair production ; Higgs particle: associated production ; Higgs particle: mass ; vector boson: fusion ; gluon gluon: fusion ; mass spectrum: (tau+ tau-) ; CMS ; CERN LHC Coll ; CERN Lab ; statistical analysis ; data analysis method ; experimental results ; 13000 GeV-cms
Links
  1. Englert F., Brout R., Broken Symmetry and the Mass of Gauge Vector Mesons, 10.1103/physrevlett.13.321
  2. Higgs P.W., Broken symmetries, massless particles and gauge fields, 10.1016/0031-9163(64)91136-9
  3. Higgs Peter W., Broken Symmetries and the Masses of Gauge Bosons, 10.1103/physrevlett.13.508
  4. Guralnik G. S., Hagen C. R., Kibble T. W. B., Global Conservation Laws and Massless Particles, 10.1103/physrevlett.13.585
  5. P.W. Higgs, Spontaneous symmetry breakdown without massless bosons, Phys. Rev. 145 (1966) 1156 [ INSPIRE ].
  6. Kibble T. W. B., Symmetry Breaking in Non-Abelian Gauge Theories, 10.1103/physrev.155.1554
  7. ATLAS collaboration, Observation of a new particle in the search for the Standard Model Higgs boson with the ATLAS detector at the LHC, Phys. Lett. B 716 (2012) 1 [ arXiv:1207.7214 ] [ INSPIRE ].
  8. CMS collaboration, Observation of a new boson at a mass of 125 GeV with the CMS experiment at the LHC, Phys. Lett. B 716 (2012) 30 [ arXiv:1207.7235 ] [ INSPIRE ].
  9. CMS collaboration, Observation of a new boson with mass near 125 GeV in pp collisions at s $$ \sqrt{s} $$ = 7 and 8 TeV, JHEP 06 (2013) 081 [ arXiv:1303.4571 ] [ INSPIRE ].
  10. ALEPH collaboration, Observation of an excess in the search for the Standard Model Higgs boson at ALEPH, Phys. Lett. B 495 (2000) 1 [ hep-ex/0011045 ] [ INSPIRE ].
  11. DELPHI collaboration, Final results from DELPHI on the searches for SM and MSSM neutral Higgs bosons, Eur. Phys. J. C 32 (2004) 145 [ hep-ex/0303013 ] [ INSPIRE ].
  12. L3 collaboration, Standard Model Higgs boson with the L3 experiment at LEP, Phys. Lett. B 517 (2001) 319 [ hep-ex/0107054 ] [ INSPIRE ].
  13. OPAL collaboration, Search for the Standard Model Higgs boson in e + e − collisions at s $$ \sqrt{s} $$ ≃ 192 GeV–209 GeV, Phys. Lett. B 499 (2001) 38 [ hep-ex/0101014 ] [ INSPIRE ].
  14. CDF collaboration, Search for a low mass Standard Model Higgs boson in the τ − τ decay channel in p p ¯ $$ p\overline{p} $$ collisions at s $$ \sqrt{s} $$ = 1.96 TeV, Phys. Rev. Lett. 108 (2012) 181804 [ arXiv:1201.4880 ] [ INSPIRE ].
  15. D0 collaboration, Search for the Standard Model Higgs boson in tau lepton pair final states, Phys. Lett. B 714 (2012) 237 [ arXiv:1203.4443 ] [ INSPIRE ].
  16. ATLAS collaboration, Evidence for the Higgs-boson Yukawa coupling to tau leptons with the ATLAS detector, JHEP 04 (2015) 117 [ arXiv:1501.04943 ] [ INSPIRE ].
  17. ATLAS collaboration, Search for the Standard Model Higgs boson produced in association with a vector boson and decaying into a tau pair in pp collisions at s $$ \sqrt{s} $$ = 8 TeV with the ATLAS detector, Phys. Rev. D 93 (2016) 092005 [ arXiv:1511.08352 ] [ INSPIRE ].
  18. CMS collaboration, Evidence for the 125 GeV Higgs boson decaying to a pair of τ leptons, JHEP 05 (2014) 104 [ arXiv:1401.5041 ] [ INSPIRE ].
  19. CMS collaboration, Observation of the Higgs boson decay to a pair of τ leptons with the CMS detector, Phys. Lett. B 779 (2018) 283 [ arXiv:1708.00373 ] [ INSPIRE ].
  20. CMS collaboration, The CMS trigger system, 2017 JINST 12 P01020 [ arXiv:1609.02366 ] [ INSPIRE ].
  21. CMS collaboration, The CMS experiment at the CERN LHC, 2008 JINST 3 S08004 [ INSPIRE ].
  22. P. Nason, A new method for combining NLO QCD with shower Monte Carlo algorithms, JHEP 11 (2004) 040 [ hep-ph/0409146 ] [ INSPIRE ].
  23. Frixione Stefano, Nason Paolo, Oleari Carlo, Matching NLO QCD computations with parton shower simulations: the POWHEG method, 10.1088/1126-6708/2007/11/070
  24. Alioli Simone, Nason Paolo, Oleari Carlo, Re Emanuele, A general framework for implementing NLO calculations in shower Monte Carlo programs: the POWHEG BOX, 10.1007/jhep06(2010)043
  25. Alioli Simone, Hamilton Keith, Nason Paolo, Oleari Carlo, Re Emanuele, Jet pair production in POWHEG, 10.1007/jhep04(2011)081
  26. Alioli Simone, Nason Paolo, Oleari Carlo, Re Emanuele, NLO Higgs boson production via gluon fusion matched with shower in POWHEG, 10.1088/1126-6708/2009/04/002
  27. Luisoni Gionata, Nason Paolo, Oleari Carlo, Tramontano Francesco, HW ±/HZ + 0 and 1 jet at NLO with the POWHEG BOX interfaced to GoSam and their merging within MiNLO, 10.1007/jhep10(2013)083
  28. NNPDF collaboration, Unbiased global determination of parton distributions and their uncertainties at NNLO and at LO, Nucl. Phys. B 855 (2012) 153 [ arXiv:1107.2652 ] [ INSPIRE ].
  29. D. de Florian, G. Ferrera, M. Grazzini and D. Tommasini, Higgs boson production at the LHC: transverse momentum resummation effects in the H → γγ, H → WW → ℓνℓν and H → ZZ → 4ℓ decay modes, JHEP 06 (2012) 132 [ arXiv:1203.6321 ] [ INSPIRE ].
  30. Grazzini Massimiliano, Sargsyan Hayk, Heavy-quark mass effects in Higgs boson production at the LHC, 10.1007/jhep09(2013)129
  31. LHC Higgs Cross Section Working Group collaboration, Handbook of LHC Higgs cross sections: 4. Deciphering the nature of the Higgs sector, arXiv:1610.07922 [ INSPIRE ].
  32. Denner A., , Heinemeyer S., Puljak I., Rebuzzi D., Spira M., Standard model Higgs-boson branching ratios with uncertainties, 10.1140/epjc/s10052-011-1753-8
  33. Ball Richard D., Bertone Valerio, Cerutti Francesco, Del Debbio Luigi, Forte Stefano, Guffanti Alberto, Latorre José I., Rojo Juan, Ubiali Maria, Impact of heavy quark masses on parton distributions and LHC phenomenology, 10.1016/j.nuclphysb.2011.03.021
  34. Campbell John M., Ellis R.K., MCFM for the Tevatron and the LHC, 10.1016/j.nuclphysbps.2010.08.011
  35. Frederix Rikkert, Frixione Stefano, Merging meets matching in MC@NLO, 10.1007/jhep12(2012)061
  36. Alwall J., Höche S., Krauss F., Lavesson N., Lönnblad L., Maltoni F., Mangano M.L., Moretti M., Papadopoulos C.G., Piccinini F., Schumann S., Treccani M., Winter J., Worek M., Comparative study of various algorithms for the merging of parton showers and matrix elements in hadronic collisions, 10.1140/epjc/s10052-007-0490-5
  37. Sjöstrand Torbjörn, Ask Stefan, Christiansen Jesper R., Corke Richard, Desai Nishita, Ilten Philip, Mrenna Stephen, Prestel Stefan, Rasmussen Christine O., Skands Peter Z., An introduction to PYTHIA 8.2, 10.1016/j.cpc.2015.01.024
  38. CMS collaboration, Event generator tunes obtained from underlying event and multiparton scattering measurements, Eur. Phys. J. C 76 (2016) 155 [ arXiv:1512.00815 ] [ INSPIRE ].
  39. Agostinelli S., Allison J., Amako K., Apostolakis J., Araujo H., Arce P., Asai M., Axen D., Banerjee S., Barrand G., Behner F., Bellagamba L., Boudreau J., Broglia L., Brunengo A., Burkhardt H., Chauvie S., Chuma J., Chytracek R., Cooperman G., Cosmo G., Degtyarenko P., Dell'Acqua A., Depaola G., Dietrich D., Enami R., Feliciello A., Ferguson C., Fesefeldt H., Folger G., Foppiano F., Forti A., Garelli S., Giani S., Giannitrapani R., Gibin D., Gómez Cadenas J.J., González I., Gracia Abril G., Greeniaus G., Greiner W., Grichine V., Grossheim A., Guatelli S., Gumplinger P., Hamatsu R., Hashimoto K., Hasui H., Heikkinen A., Howard A., Ivanchenko V., Johnson A., Jones F.W., Kallenbach J., Kanaya N., Kawabata M., Kawabata Y., Kawaguti M., Kelner S., Kent P., Kimura A., Kodama T., Kokoulin R., Kossov M., Kurashige H., Lamanna E., Lampén T., Lara V., Lefebure V., Lei F., Liendl M., Lockman W., Longo F., Magni S., Maire M., Medernach E., Minamimoto K., Mora de Freitas P., Morita Y., Murakami K., Nagamatu M., Nartallo R., Nieminen P., Nishimura T., Ohtsubo K., Okamura M., O'Neale S., Oohata Y., Paech K., Perl J., Pfeiffer A., Pia M.G., Ranjard F., Rybin A., Sadilov S., Di Salvo E., Santin G., Sasaki T., Savvas N., Sawada Y., Scherer S., Sei S., Sirotenko V., Smith D., Starkov N., Stoecker H., Sulkimo J., Takahata M., Tanaka S., Tcherniaev E., Safai Tehrani E., Tropeano M., Truscott P., Uno H., Urban L., Urban P., Verderi M., Walkden A., Wander W., Weber H., Wellisch J.P., Wenaus T., Williams D.C., Wright D., Yamada T., Yoshida H., Zschiesche D., Geant4—a simulation toolkit, 10.1016/s0168-9002(03)01368-8
  40. CMS collaboration, Particle-flow reconstruction and global event description with the CMS detector, 2017 JINST 12 P10003 [ arXiv:1706.04965 ] [ INSPIRE ].
  41. Cacciari Matteo, Salam Gavin P, Soyez Gregory, The anti-ktjet clustering algorithm, 10.1088/1126-6708/2008/04/063
  42. Cacciari Matteo, Salam Gavin P., Soyez Gregory, FastJet user manual : (for version 3.0.2), 10.1140/epjc/s10052-012-1896-2
  43. Performance of electron reconstruction and selection with the CMS detector in proton-proton collisions at √s= 8 TeV, 10.1088/1748-0221/10/06/p06005
  44. CMS collaboration, Performance of the CMS muon detector and muon reconstruction with proton-proton collisions at s $$ \sqrt{s} $$ = 13 TeV, 2018 JINST 13 P06015 [ arXiv:1804.04528 ] [ INSPIRE ].
  45. M. Cacciari and G.P. Salam, Dispelling the N 3 myth for the k t jet-finder, Phys. Lett. B 641 (2006) 57 [ hep-ph/0512210 ] [ INSPIRE ].
  46. CMS collaboration, Identification of heavy-flavour jets with the CMS detector in pp collisions at 13 TeV, 2018 JINST 13 P05011 [ arXiv:1712.07158 ] [ INSPIRE ].
  47. , Reconstruction and identification of τ lepton decays to hadrons and ντat CMS, 10.1088/1748-0221/11/01/p01019
  48. CMS collaboration, Performance of reconstruction and identification of tau leptons in their decays to hadrons and tau neutrino in LHC Run-2, CMS-PAS-TAU-16-002 , CERN, Geneva, Switzerland (2016).
  49. A. Hocker et al., TMVA — toolkit for multivariate data analysis, in XI Int. Workshop on Advanced Computing and Analysis Techniques in Physics Research, CERN-OPEN-2007-007 , (2007) [ physics/0703039 ] [ INSPIRE ].
  50. CMS collaboration, Measurement of the inclusive W and Z production cross sections in pp collisions at s $$ \sqrt{s} $$ = 7 TeV, JHEP 10 (2011) 132 [ arXiv:1107.4789 ] [ INSPIRE ].
  51. Bianchini Lorenzo, Conway John, Friis Evan Klose, Veelken Christian, Reconstruction of the Higgs mass inH→ττEvents by Dynamical Likelihood techniques, 10.1088/1742-6596/513/2/022035
  52. CMS collaboration, Measurements of properties of the Higgs boson decaying into the four-lepton final state in pp collisions at s $$ \sqrt{s} $$ = 13 TeV, JHEP 11 (2017) 047 [ arXiv:1706.09936 ] [ INSPIRE ].
  53. CMS collaboration, Measurement of the cross section for top quark pair production in association with a W or Z boson in proton-proton collisions at s $$ \sqrt{s} $$ = 13 TeV, JHEP 08 (2018) 011 [ arXiv:1711.02547 ] [ INSPIRE ].
  54. CMS collaboration, Performance of missing energy reconstruction in 13 TeV pp collision data using the CMS detector, CMS-PAS-JME-16-004 , CERN, Geneva, Switzerland (2016).
  55. CMS collaboration, CMS luminosity measurements for the 2016 data taking period, CMS-PAS-LUM-17-001 , CERN, Geneva, Switzerland (2017).
  56. Hamilton Keith, Nason Paolo, Re Emanuele, Zanderighi Giulia, NNLOPS simulation of Higgs boson production, 10.1007/jhep10(2013)222
Bibliographic reference Bakhshiansohi, Hamed ; Bondu, Olivier ; Brochet, Sébastien ; Bruno, Giacomo ; Caputo, Claudio ; et. al. Search for the associated production of the Higgs boson and a vector boson in proton-proton collisions at $\sqrt{s}=$ 13 TeV via Higgs boson decays to $\tau$ leptons. In: Journal of High Energy Physics, Vol. 1906, p. 093 (2019)
Permanent URL http://hdl.handle.net/2078.1/217629