KK graviton resonance and cascade decays in warped gravity

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Title
KK graviton resonance and cascade decays in warped gravity
Author(s)
Barry M. Dillon; Chengcheng Han; Hyun Min Lee; Myeonghun Park
Publication Date
2017-11
Journal
INTERNATIONAL JOURNAL OF MODERN PHYSICS A, v.32, no.33, pp.28 -
Publisher
WORLD SCIENTIFIC PUBL CO PTE LTD
Abstract
We consider the Kaluza Klein (KK) graviton and its decays in the presence of the light radion, the modulus of extra dimension, appearing naturally light due to classical scale invariance in warped gravity. Due to the presence of a sizable wave function overlap in the extra dimension between the KK graviton and the radion, the KK graviton can decay largely into a pair of radions, each of which decays into a pair of collimated photons or photon-jets. Focusing on the setup where the KK graviton has suppressed couplings to the Higgs boson and fermions, we discuss the bounds on the light radion in the parameter space where the photon-jets are relevant. Moreover, we pursue the possibility of distinguishing the scenario from the case with direct photon contributions by the angular distributions of photons in the LHC Run 2. Roles of KK graviton and radion as mediators of dark matter interactions, extensions with brane kinetic terms and the model with a holographic composite Higgs are also addressed (c) World Scientic Publishing Company
URI
https://pr.ibs.re.kr/handle/8788114/4777
ISSN
0217-751X
Appears in Collections:
Center for Fundamental Theory(순수물리이론 연구단) > Journal Papers (저널논문)
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