Signals of a 2 TeV W′ boson and a heavier Z′ boson

Abstract

Abstract:We construct an SU(2) L × SU(2) R × U(1) B−L model with a Higgs sector that consists of a bidoublet and a doublet, and with a right-handed neutrino sector that includes one Dirac fermion and one Majorana fermion. This model explains the Run 1 CMS and ATLAS excess events in the e + e − jj, jj, W h 0 and W Z channels in terms of a W boson of mass near 1.9 TeV and of coupling g R in the 0.4-0.5 range, with the lower half preferred by limits on tb resonances and Run 2 results. The production cross section of this W boson at the 13 TeV LHC is in the 700-900 fb range, allowing sensitivity in more than 17 final states. We determine that the Z boson has a mass in the 3.4-4.5 TeV range and several decay channels that can be probed in Run 2 of the LHC, including cascade decays via heavy Higgs bosons.

Trinification can explain the di-photon and di-boson LHC anomalies

“…In particular, for appropriate values of its parameters, trinification can also reproduce the eejj excess [72], as already discussed in [7][8][9][10][11][12][13][14][15][16][17][18][19][20][21] in the context of dedicated models. Needless to say, all decay widths can be computed in terms of unknown masses and of the mixing angles introduced above.…”

Angular observables for spin discrimination in boosted diboson final states

“…Spin-0 explanations are discussed in context of a Higgs singlet [36], a two Higgs doublet model [37][38][39][40], sparticles [41,42] or composite scalars [43,44]. Spin-1 proposals include composite vector resonances [45][46][47][48][49][50][51][52], generic and effective field theory (EFT) models [53][54][55][56] as well as heavy W resonances [22][23][24][25][57][58][59][60][61][62][63][64][65][66][67][68][69], Z resonances [26,[70][71][72][73][74][75][76] or both [77][78][79]…”

“…The spin-1 W R explanation is taken from the UFO model files that accompany ref. [25]. The spin-2 heavy graviton resonance is adapted from a Randall-Sundrum scenario [118,119] as a MadGraph model file implementation [120].…”

“…Beyond the self-consistency requirement to observe the diboson excess in leptonic channels, various new physics models also predict a new dijet resonance as well as V H resonances, where V is a massive electroweak boson and H is the Higgs boson [22][23][24][25][26]. The corresponding dijet resonance searches from ATLAS 8 TeV data [27], CMS 8 TeV data [28], ATLAS 13 TeV data [29] and CMS 13 TeV data [30], as well as W H and ZH resonance searches with 8 TeV ATLAS data [31], 8 TeV CMS data [32][33][34], and 13 TeV ATLAS data [35], have all variously been statistically consistent with the SM background expectation, which then provide important model-dependent constraints on new physics interpretations of the 2 TeV excess.…”

Intersecting branes, SUSY breaking and the 2 TeV excess at the LHC

“…The phenomenological potential of such models to explain all the excesses seen by ATLAS and CMS were e.g. analyzed in [8][9][10][11][12][13][14][15][16][17][18][19][20][21][22]. In these papers, the SU(2) R gauge coupling was restricted to be in the regime 0.4 < g R (M R ) < 0.6.…”