4.7 Article

Search for a fermiophobic Higgs boson in the diphoton decay channel with the ATLAS detector

Journal

EUROPEAN PHYSICAL JOURNAL C
Volume 72, Issue 9, Pages -

Publisher

SPRINGER
DOI: 10.1140/epjc/s10052-012-2157-0

Keywords

-

Funding

  1. ANPCyT, Argentina
  2. YerPhI, Armenia
  3. ARC, Australia
  4. BMWF, Austria
  5. ANAS, Azerbaijan
  6. SSTC, Belarus
  7. CNPq, Brazil
  8. FAPESP, Brazil
  9. NSERC, Canada
  10. NRC, Canada
  11. CFI, Canada
  12. CERN
  13. CONICYT, Chile
  14. CAS, China
  15. MOST, China
  16. NSFC, China
  17. COLCIEN-CIAS, Colombia
  18. MSMT CR, Czech Republic
  19. MPO CR, Czech Republic
  20. VSC CR, Czech Republic
  21. DNRF, Denmark
  22. DNSRC, Denmark
  23. Lundbeck Foundation, Denmark
  24. EPLANET, European Union
  25. ERC, European Union
  26. IN2P3-CNRS, France
  27. CEA-DSM/IRFU, France
  28. GNAS, Georgia
  29. BMBF, Germany
  30. DFG, Germany
  31. HGF, Germany
  32. MPG, Germany
  33. AvH Foundation, Germany
  34. GSRT, Greece
  35. ISF, Israel
  36. MINERVA, Israel
  37. GIF, Israel
  38. DIP, Israel
  39. Benoziyo Center, Israel
  40. INFN, Italy
  41. MEXT, Japan
  42. JSPS, Japan
  43. CNRST, Morocco
  44. FOM, Netherlands
  45. NWO, Netherlands
  46. RCN, Norway
  47. MNiSW, Poland
  48. GRICES, Portugal
  49. FCT, Portugal
  50. MERYS (MECTS), Romania
  51. MES of Russia
  52. ROSATOM, Russian Federation
  53. JINR
  54. MSTD, Serbia
  55. MSSR, Slovakia
  56. ARRS, Slovenia
  57. MVZT, Slovenia
  58. DST/NRF, South Africa
  59. MICINN, Spain
  60. SRC, Sweden
  61. Wallenberg Foundation, Sweden
  62. SER, Switzerland
  63. SNSF, Switzerland
  64. Canton of Bern, Switzerland
  65. Canton of Geneva, Switzerland
  66. NSC, Taiwan
  67. TAEK, Turkey
  68. STFC, United Kingdom
  69. Royal Society, United Kingdom
  70. Leverhulme Trust, United Kingdom
  71. DOE, United States of America
  72. NSF, United States of America
  73. ICREA Funding Source: Custom
  74. STFC [ST/H001093/2, ST/K001248/1, ST/K00073X/1, ST/M001512/1, PP/E003699/1, ST/M000753/1, ST/I003142/1, ST/G502320/1, ST/I006080/1, ST/H001026/2, ST/K001337/1, PP/E000347/1, ST/H00100X/2, ST/I003517/1, ST/L001144/1, ST/H00100X/1, ST/M001431/1, ST/K001329/1, ST/J002798/1, ST/I000186/1, PP/E003087/1, ST/F007337/1, ST/H001042/1, ST/J004804/1, ST/L001195/1, PP/E000355/1, ST/I005811/1, ST/H001026/1, ST/K501840/1, ST/H001093/1, ST/J004928/1, ST/J005460/1, ST/I005803/1, ST/I003525/1, ST/K001361/1, ST/H001069/2, PP/E002757/1, ST/K000705/1, ST/K00140X/1, ST/J005576/1, ST/M000761/1, PP/E003699/2, ST/J004944/1, ST/H001042/2] Funding Source: UKRI
  75. Science and Technology Facilities Council [ST/F007337/1, ST/K001361/1 ATLAS Upgrades, ST/J005576/1, ST/K000705/1, PP/E000355/1, ST/K001248/1 ATLAS, ST/K001361/1 LHCb Upgrades, ST/I006080/1, ST/J002798/1, PP/E000347/1, ST/H00100X/1, ST/I000186/1, ST/K001361/1 LHCb, ST/J004928/1 ATLAS Upgrade, ST/K001310/1 LHCb, ATLAS, ST/K001418/1, ST/J004944/1, ST/H001093/2, ST/G502320/1, PP/E003699/1, ST/M001431/1, ST/I005803/1, ST/M001474/1, ST/J004928/1, PP/E003087/1, ST/M001512/1, ST/I003142/1, ST/H001026/1, ST/K001329/1 ATLAS, ST/H001069/2, ST/K001361/1 MINOS/MINOS+, ST/I003525/1, ST/K001310/1 ATLAS, ST/L001195/1, ST/K001361/1 ATLAS, ST/K001248/1, ST/I005803/1 GRIDPP, ST/K001264/1 ATLAS, ST/K001337/1, ST/K001361/1, ST/H001093/1, ST/K00073X/1, GRIDPP, PP/E003699/2, ST/K001310/1, ST/L001144/1, ST/H00100X/2, ST/I003517/1, ST/K001310/1 LHCb Upgrades, ST/K001337/1 ATLAS, ST/H001026/2, ST/K001310/1 ATLAS Upgrades] Funding Source: researchfish
  76. Division Of Physics
  77. Direct For Mathematical & Physical Scien [1119200] Funding Source: National Science Foundation

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A search for a fermiophobic Higgs boson using diphoton events produced in proton-proton collisions at a centre-of-mass energy of root s = 7 TeV is performed using data corresponding to an integrated luminosity of 4.9 fb(-1) collected by the ATLAS experiment at the Large Hadron Collider. A specific benchmark model is considered where all the fermion couplings to the Higgs boson are set to zero and the bosonic couplings are kept at the Standard Model values (fermiophobic Higgs model). The largest excess with respect to the background-only hypothesis is found at 125.5 GeV, with a local significance of 2.9 standard deviations, which reduces to 1.6 standard deviations when taking into account the look-elsewhere effect. The data exclude the fermiophobic Higgs model in the ranges 110.0-118.0 GeV and 119.5-121.0 GeV at 95 % confidence level.

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