Abstract
In this paper, we present the precision predictions for three photon production in the standard model (SM) at the ILC including the full next-to-leading (NLO) electroweak (EW) corrections, high order initial state radiation (h.o.ISR) contributions and beamstrahlung effects. We present the LO and the NLO EW+h.o.ISR+beamstrahlung corrected total cross sections for various colliding energy when $\sqrt s \ge 200 {\rm GeV}$ and the kinematic distributions of final photons with $\sqrt s = 500 {\rm GeV}$ at ILC, and find that the NLO EW corrections, the h.o.ISR contributions and the beamstrahlung effects are important in exploring the process $e^+e^- \to \gamma\gamma\gamma$.
Highlights
After the infusive discovery of the Higgs boson by the ATLAS and CMS collaborations at the CERN Large Hadron Collider (LHC) [1, 2], the important goals of further collider experiments are to determine the nature of the discovered Higgs boson, investigate the predictions of the Standard Model (SM), and search the hints for physics in the beyond Standard Model (BSM)
Hardest distributions of final photons, i.e., pγT1, yγ1, Mγiγj and Rγiγj, and find that the EW correction exhibits a strong dependence on the observable and on phase space. We conclude that both the next-to-leading order (NLO) EW, h.o.ISR and beamstrahlung corrections are worth being taken into account in precision measurement of the triple photon production at the ILC
Summary
After the infusive discovery of the Higgs boson by the ATLAS and CMS collaborations at the CERN Large Hadron Collider (LHC) [1, 2], the important goals of further collider experiments are to determine the nature of the discovered Higgs boson, investigate the predictions of the Standard Model (SM), and search the hints for physics in the beyond Standard Model (BSM). To directly measure the quartic gauge boson couplings, the investigations of triple gauge boson production are required. Precise predictions for such SM processes are important as the quantum corrections are often comparable to the BSM effects. The phenomenological results for all the triple gauge boson productions at hadron collider in the SM are available at next-to-leading order (NLO) in QCD [3,4,5,6,7,8,9,10,11] and for W W Z and W ZZ productions in the SM can be obtained at electroweak (EW) NLO [12, 13]. We present the full NLO EW corrections to the triple photon production at the e+e− colliders, as well as the high order ISR contributions at the leading-logarithmic approximation in the structure function method.
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