Probing Higgs-radion mixing in warped models through complementary searches at the LHC and the ILC

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Frank , M , Huitu , K , Maitra , U & Patra , M 2016 , ' Probing Higgs-radion mixing in warped models through complementary searches at the LHC and the ILC ' Physical Review D , vol. 94 , no. 5 , 055016 . DOI: 10.1103/PhysRevD.94.055016

Title: Probing Higgs-radion mixing in warped models through complementary searches at the LHC and the ILC
Author: Frank, Mariana; Huitu, Katri; Maitra, Ushoshi; Patra, Monalisa
Contributor: University of Helsinki, Helsinki Institute of Physics
Date: 2016-09-12
Language: eng
Number of pages: 22
Belongs to series: Physical Review D
ISSN: 2470-0010
URI: http://hdl.handle.net/10138/183651
Abstract: We consider the Higgs-radion mixing in the context of warped space extradimensional models with custodial symmetry and investigate the prospects of detecting the mixed radion. Custodial symmetries allow the Kaluza-Klein excitations to be lighter and protect Zbb to be in agreement with experimental constraints. We perform a complementary study of discovery reaches of the Higgs-radion mixed state at the 13 and 14 TeV LHC and at the 500 and 1000 GeV International Linear Collider (ILC). We carry out a comprehensive analysis of the most significant production and decay modes of the mixed radion in the 80 GeV-1 TeV mass range and indicate the parameter space that can be probed at the LHC and the ILC. There exists a region of the parameter space which can be probed, at the LHC, through the diphoton channel even for a relatively low luminosity of 50 fb(-1). The reach of the four-lepton final state in probing the parameter space is also studied in the context of 14 TeV LHC, for a luminosity of 1000 fb(-1). At the ILC, with an integrated luminosity of 500 fb(-1), we analyze the Z-radion associated production and the WW fusion production, followed by the radion decay into b (b) over bar and W+W-. The WW fusion production is favored over the Z-radion associated channel in probing regions of the parameter space beyond the LHC reach. The complementary study at the LHC and the ILC is useful both for the discovery of the radion and the understanding of its mixing sector.
Subject: RANDALL-SUNDRUM MODEL
BULK FIELDS
DIMENSIONS
MILLIMETER
COLLISIONS
HIERARCHY
SYMMETRY
MODULUS
MASSES
SECTOR
114 Physical sciences
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