Study of Higgs boson production and its b-b(bar) decay in gamma-gamma processes in proton-nucleus collisions at the LHC

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We explore for the first time the possibilities to measure an intermediate-mass (m{sub H} = 115-140 GeV/c{sup 2}) Standard-Model Higgs boson in electromagnetic proton-lead (p Pb) interactions at the CERN Large Hadron Collider (LHC) via its b{bar b} decay. Using equivalent Weizsacker-Williams photon fluxes and Higgs effective field theory for the coupling {gamma}{gamma} {yields} H, we obtain a leading-order cross section of the order of 0.3 pb for exclusive Higgs production in elastic (p Pb {yields} {gamma}{gamma} p H Pb) and semielastic (p Pb {yields} {gamma}{gamma} X H Pb) processes at {radical}S{sub NN} = 8.8 TeV. After applying various kinematics ... continued below

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22 pages

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d'Enterria, David; /ICC, Barcelona U. /ICREA, Barcelona; Lansberg, Jean-Philippe & /Ecole Polytechnique, CPHT /SLAC August 26, 2010.

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We explore for the first time the possibilities to measure an intermediate-mass (m{sub H} = 115-140 GeV/c{sup 2}) Standard-Model Higgs boson in electromagnetic proton-lead (p Pb) interactions at the CERN Large Hadron Collider (LHC) via its b{bar b} decay. Using equivalent Weizsacker-Williams photon fluxes and Higgs effective field theory for the coupling {gamma}{gamma} {yields} H, we obtain a leading-order cross section of the order of 0.3 pb for exclusive Higgs production in elastic (p Pb {yields} {gamma}{gamma} p H Pb) and semielastic (p Pb {yields} {gamma}{gamma} X H Pb) processes at {radical}S{sub NN} = 8.8 TeV. After applying various kinematics cuts to remove the main backgrounds ({gamma}{gamma} {yields} b{bar b} and misidentified {gamma}{gamma} {yields} q{bar q} events), we find that a Higgs boson with m{sub H} = 120 GeV/c{sup 2} could be observed in the b{bar b} channel with a 3{sigma}-significance integrating 300 pb{sup -1} with an upgraded pA luminosity of 10{sup 31} cm{sup -2}s{sup -1}. We also provide for the first time semielastic Higgs cross sections, along with elastic t{bar t} cross sections, for electromagnetic pp, pA and AA collisions at the LHC.

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22 pages

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http://www.slac.stanford.edu/cgi-wrap/pubpage?slac-pub-13786.html

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  • Journal Name: Phys.Rev.D81:014004,2010

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  • Report No.: SLAC-PUB-13786
  • Grant Number: AC02-76SF00515
  • DOI: 10.1103/PhysRevD.81.014004 | External Link
  • Office of Scientific & Technical Information Report Number: 992444
  • Archival Resource Key: ark:/67531/metadc1013255

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  • August 26, 2010

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  • Oct. 14, 2017, 8:36 a.m.

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  • Nov. 3, 2017, 1:50 p.m.

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d'Enterria, David; /ICC, Barcelona U. /ICREA, Barcelona; Lansberg, Jean-Philippe & /Ecole Polytechnique, CPHT /SLAC. Study of Higgs boson production and its b-b(bar) decay in gamma-gamma processes in proton-nucleus collisions at the LHC, article, August 26, 2010; [California]. (digital.library.unt.edu/ark:/67531/metadc1013255/: accessed September 26, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.