Inclusive dijet hadroproduction with a rapidity veto constraint

Abstract

We study ratios of azimuthal-angle distributions in Mueller–Navelet jets after imposing a rapidity veto constraint: the minijet radiation activity is restricted to only allow final-state partons separated at least a distance in rapidity b. It is well-known that the asymptotic growth with the rapidity separation of the two tagged jets of the NLLA BFKL Green's function requires a value of b≃O(2) in order to avoid unphysical cross sections. We further investigate this point from a phenomenological point of view and work out those values of b which best fit angular distributions measured at the LHC in a realistic set-up where impact factors and parton distribution effects are also taken into account. ; This work was supported by the Spanish Research Agency (Agencia Estatal de Investigación) through the grant IFT Centro de Excelencia Severo Ochoa SEV-2016-0597. GC and ASV acknowledge support from the Spanish Government grants FPA2015-65480-P, FPA2016-78022-P. DGG is supported with a fellowship of the international programme 'La Caixa-Severo Ochoa'. FGC acknowledges support from the Italian Foundation "Angelo della Riccia".