https://doi.org/10.1140/epjc/s10052-016-4199-1
Regular Article - Theoretical Physics
Pseudo-scalar Higgs boson production at threshold N
LO and NLL QCD
1
The Institute of Mathematical Sciences, IV Cross Road, CIT Campus, Chennai, 600 113, India
2
Department of Physics, Indian Institute of Technology Guwahati, Guwahati, 781 039, India
3
Saha Institute of Nuclear Physics, 1/AF Bidhan Nagar, Kolkata, 700 064, India
* e-mail: taushif@imsc.res.in
Received:
10
May
2016
Accepted:
10
June
2016
Published online:
25
June
2016
We present the first results on the production of pseudo-scalar Higgs boson through gluon fusion at the LHC to NLO in QCD taking into account only soft-gluon effects. We have used the effective Lagrangian that describes the coupling of the pseudo-scalar Higgs boson with the gluons in the large top quark mass limit. We have used quantities that have recently become available, namely the three-loop pseudo-scalar Higgs boson form factor and the third order universal soft function in QCD to achieve this. Along with the fixed order results, we also present the process dependent resummation coefficient for a threshold resummation to NLL in QCD. Phenomenological impact of these threshold NLO corrections to pseudo-scalar Higgs boson production at the LHC is presented and their role in the reduction of the renormalization scale dependence is demonstrated.
© The Author(s), 2016
