Higgs boson production from black holes at the CERN LHC

If the fundamental Planck scale is near a TeV, then TeV scale black holes should be produced in proton-proton collisions at the LHC where $\sqrt{s}=14\mathrm{TeV}$. As the temperature of the black holes can be $\sim 1\mathrm{TeV}$ we also expect production of Higgs bosons from them via Hawking radiation. This is a different production mode for the Higgs boson, which would normally be produced via direct pQCD parton fusion processes. In this paper we compare total cross sections and transverse momentum distributions $d\sigma /d{p}_T$ for Higgs production from black holes at the LHC with those from direct parton fusion processes at next-to-next-to-leading order and next-to-leading order, respectively. We find that the Higgs production from black holes can be larger or smaller than the direct pQCD production depending upon the Planck mass and black hole mass. We also find that $d\sigma /d{p}_T$ of Higgs production from black holes increases as a function of $p_T$ which is in sharp contrast with the pQCD predictions where $d\sigma /d{p}_T$ decreases so we suggest that the measurement of an increase in $d\sigma /d{p}_T$ as $p_T$ increases for Higgs (or any other heavy particle) production can be a useful signature for black holes at the LHC.

Figure 1

Total cross sections for black hole production at the LHC.

Figure 2

Total cross sections for Higgs production from black holes and from direct pQCD processes at NNLO.

Figure 3

$p_T$ differential cross sections for Higgs production from black holes and from direct pQCD processes at NLO. The Planck mass is 1 TeV.

Figure 4

$p_T$ differential cross sections for Higgs production from black holes and from direct pQCD processes at NLO. The Planck mass is 2 TeV.

Figure 5

$p_T$ differential cross sections for Higgs production at the LHC from direct pQCD processes at NLO and weak boson fusion processes at NLO.