Search for high mass dijet resonances with a new background prediction method in proton-proton collisions at $$ \sqrt{s} $$ = 13 TeV

Abstract

Search for high mass dijet resonances with a new background prediction method in proton-proton collisions at √ s = 13 TeV The CMS collaboration

Novel flavour-changing neutral currents in the top quark sector

“…Entries in Y f andỸ f are constrained by e.g. direct searches for resonances [38,39]. One important exception is entries i3, 3i of Y q .…”

Neutrino and Z′ phenomenology in an anomaly-free U(1) extension: role of higher-dimensional operators

“…Exclusion bounds on the model parameters, from a given experiment, can be obtained by comparing the expected signal strength with the upper bound (UB) on new physics events that the non-observation of an excess in the said experiment implies. To this end, we use the dilepton [98,99] and dijet [100,101] resonance search data that the two LHC experiments have collected (at √ s = 13 TeV) with an approximate integrated luminosity of 140 fb −1 . We start by summarizing the experimental results:…”

“…• CMS dijet [101]: For the high-mass dijet events, the collaboration uses an integrated luminosity of 137 fb −1 . We recast the observed UB on σ×BR×A (with A = 0.5) taken from figure 10 (lower panel) of ref.…”

“…We recast the observed UB on σ×BR×A (with A = 0.5) taken from figure 10 (lower panel) of ref. [101] for the spin-1 resonance with a width/mass ratio of 1%. In all these four searches discussed above, we use the ones with smallest width/mass ratio which are available in those analyses as in our case Z width is much smaller compared to its mass.…”

Search for dijet resonances in events with an isolated charged lepton using $$ \sqrt{s} $$ = 13 TeV proton-proton collision data collected by the ATLAS detector

“…Studies of this kind were among the first published using early data from the ATLAS [1][2][3][4] and CMS [5][6][7] experiments at the Large Hadron Collider (LHC) at CERN, when operations at high energy first began. Later results used new datasets as the LHC increased the collision energy, from 7 TeV to 8 TeV during Run 1 [8][9][10], and then to 13 TeV for Run 2 [11][12][13][14][15][16][17][18]. Typically, these searches initially focused on resonances with high dijet invariant masses, m jj , e.g.…”