https://doi.org/10.1140/epjc/s10052-016-4478-x
Regular Article - Theoretical Physics
The two-loop QCD correction to massive spin-2 resonance
1
The Institute of Mathematical Sciences, IV Cross Road, CIT Campus, Chennai, 600 113, India
2
Theory Division, Saha Institute of Nuclear Physics, 1/AF, Bidhannagar, Kolkata, 700 064, India
3
Homi Bhaba National Institute, Training School Complex, Anushakti Nagar, Mumbai, 400 085, India
* e-mail: goutam.das@saha.ac.in
Received:
8
September
2016
Accepted:
31
October
2016
Published online:
3
December
2016
The two-loop QCD correction to massive spin-2 graviton decaying to is presented considering a generic universal spin-2 coupling to the SM through the conserved energy-momentum tensor. Such a massive spin-2 particle can arise in extra-dimensional models. The ultraviolet and infrared structure of the QCD amplitudes are studied. In dimensional regularization, the infrared pole structure is in agreement with Catani’s proposal, confirming the universal factorization property of QCD amplitudes, even with the spin-2 tensorial coupling.
© The Author(s), 2016