Search for new phenomena in dijet events using 37 fb$^{-1}$ of $pp$ collision data collected at $\sqrt{s}=$13 TeV with the ATLAS detector

M. Aaboud N. Berger 1 A.M. Burger 1 M. Delmastro 1 L. Di Ciaccio 1 S. Elles 1 K. Grevtsov 1 T. Guillemin 1 T. Hryn’ova 1 S. Jézéquel 1 O. Kivernyk 1 I. Koletsou 1 R. Lafaye 1 Jérémy Lévêque 1 N. Lorenzo Martinez 1 P. Mastrandea 1 S. Raspopov 1 E. Sauvan 1 B.H. Smart 1 S. Todorova-Nova 1 A. Vallier 1 I. Wingerter-Seez 1 E. Yatsenko 1 Aad G. 2 Alstaty M. 2 Barbero M. 2 Calandri A. 2 Calvet T.P. 2 Coadou Y. 2 Corga K. de Vasconcelos 2 Diaconu C. 2 Djama F. 2 Kosseifi R. Ei 2 Ellajosyula V. 2 Feligioni L. 2 Hadef A. 2 Hallewell G.D. 2 Hubaut F. 2 Kahn S.J. 2 Knoops E. B. F. G. 2 Kukla R. 2 Guirriec E. Le 2 Liu K. 2 Madaffari D. 2 Monnier E. 2 Muanza S. 2 Nagy E. 2 Pralavorio P. 2 Rodina Y. 2 Rozanov A. 2 M. Talby 2 Theveneaux-Pelzer T. 2 Torres R.E. Ticse 2 Tisserant S. 2 Toth J. 2 Touchard F. 2 L. Vacavant 2 Wolff R. 2 S. Berlendis 3 C. Camincher 3 J. Collot 3 S. Crépé-Renaudin 3 P.A. Delsart 3 C. Gabaldon 3 M.H. Genest 3 J.Y. Hostachy 3 F. Ledroit-Guillon 3 A. Lleres 3 A. Lucotte 3 F. Malek 3 T. Meideck 3 E. Petit 3 J. Stark 3 B. Trocmé 3 D. Boumediene 4 E. Busato 4 D. Calvet 4 S. Calvet 4 A.R. Chomont 4 J. Donini 4 S. Ganguly 4 Ph. Gris 4 R. Madar 4 M. Marjanovic 4 D. Pallin 4 S.M. Romano Saez 4 C. Santoni 4 S. Senkin 4 F. Vazeille 4
Abstract : Dijet events are studied in the proton--proton collision dataset recorded at $\sqrt{s}=$13 TeV with the ATLAS detector at the Large Hadron Collider in 2015 and 2016, corresponding to integrated luminosities of 3.5 fb$^{-1}$ and 33.5 fb$^{-1}$ respectively. Invariant mass and angular distributions are compared to background predictions and no significant deviation is observed. For resonance searches, a new method for fitting the background component of the invariant mass distribution is employed. The dataset is then used to set upper limits at a 95% confidence level on a range of new physics scenarios. Excited quarks with masses below 6.0 TeV are excluded, and limits are set on quantum black holes, heavy W' bosons, W* bosons, and a range of masses and couplings in a Z' dark matter mediator model. Model-independent limits on signals with a Gaussian shape are also set, using a new approach allowing factorization of physics and detector effects. From the angular distributions, a scale of new physics in contact interaction models is excluded for scenarios with either constructive or destructive interference. These results represent a substantial improvement over those obtained previously with lower integrated luminosity.
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M. Aaboud, N. Berger, A.M. Burger, M. Delmastro, L. Di Ciaccio, et al.. Search for new phenomena in dijet events using 37 fb$^{-1}$ of $pp$ collision data collected at $\sqrt{s}=$13 TeV with the ATLAS detector. Physical Review D, American Physical Society, 2017, 96 (5), pp.052004. ⟨10.1103/PhysRevD.96.052004⟩. ⟨in2p3-01497048⟩



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