Search for non-resonant Higgs boson pair production in the bbℓνℓν final state with the ATLAS detector in pp collisions at s=13 TeV

descriptionPublicationkeyboard_double_arrow_right Article 01 Feb 2020 Switzerland English Publisher:Elsevier BVJournal:Physics Letters B, volume 801, page 135,145 (issn: 0370-2693,

Copyright policy )Funded by:DFG | unidentified, NSERC | unidentified

Authors: Aad, G.; Abbott, B.; Abbott, D.C.; Abed Abud, A.; Abeling, K.; Abhayasinghe, D.K.; Abidi, S.H.; +193 Authors

Aad, G.; Abbott, B.; Abbott, D.C.; Abed Abud, A.; Abeling, K.; Abhayasinghe, D.K.; Abidi, S.H.; AbouZeid, O.S.; Abraham, N.L.; Abramowicz, H.; Abreu, H.; Abulaiti, Y.; Acharya, B.S.; Achkar, B.; Adachi, S.; Adam, L.; Adam Bourdarios, C.; Adamczyk, L.; Adamek, L.; Adelman, J.; Adersberger, M.; Adiguzel, A.; Adorni, S.; Adye, T.; Affolder, A.A.; Afik, Y.; Agapopoulou, C.; Agaras, M.N.; Aggarwal, A.; Agheorghiesei, C.; Aguilar-Saavedra, J.A.; Ahmadov, F.; Ahmed, W.S.; Ai, X.; Aielli, G.; Akatsuka, S.; Åkesson, T.P.A.; Akilli, E.; Akimov, A.V.; Al Khoury, K.; Alberghi, G.L.; Albert, J.; Alconada Verzini, M.J.; Alderweireldt, S.; Aleksa, M.; Aleksandrov, I.N.; Alexa, C.; Alexandre, D.; Alexopoulos, T.; Alfonsi, A.; Alfonsi, F.; Alhroob, M.; Ali, B.; Alimonti, G.; Alison, J.; Alkire, S.P.; Allaire, C.; Allbrooke, B.M.M.; Allen, B.W.; Allport, P.P.; Aloisio, A.; Alonso, A.; Alonso, F.; Alpigiani, C.; Alshehri, A.A.; Alvarez Estevez, M.; Álvarez Piqueras, D.; Alviggi, M.G.; Amaral Coutinho, Y.; Ambler, A.; Ambroz, L.; Amelung, C.; Amidei, D.; Amor Dos Santos, S.P.; Amoroso, S.; Amrouche, C.S.; An, F.; Anastopoulos, C.; Andari, N.; Andeen, T.; Anders, C.F.; Anders, J.K.; Andreazza, A.; Andrei, V.; Anelli, C.R.; Angelidakis, S.; Angerami, A.; Anisenkov, A.V.; Annovi, A.; Antel, C.; Anthony, M.T.; Antonelli, M.; Antrim, D.J.A.; Anulli, F.; Aoki, M.; Aparisi Pozo, J.A.; Aperio Bella, L.; Arabidze, G.; Araque, J.P.; Araujo Ferraz, V.; Araujo Pereira, R.; Arcangeletti, C.; Arce, A.T.H.; Arduh, F.A.; Arguin, J-F.; Argyropoulos, S.; Arling, J.H.; Armbruster, A.J.; Armstrong, A.; Arnaez, O.; Arnold, H.; Arrubarrena Tame, Z.P.; Artamonov, A.; Artoni, G.; Artz, S.; Asai, S.; Asbah, N.; Asimakopoulou, E.M.; Asquith, L.; Assahsah, J.; Assamagan, K.; Astalos, R.; Atkin, R.J.; Atkinson, M.; Atlay, N.B.; Atmani, H.; Augsten, K.; Avolio, G.; Avramidou, R.; Ayoub, M.K.; Azoulay, A.M.; Azuelos, G.; Bachacou, H.; Bachas, K.; Backes, M.; Backman, F.; Bagnaia, P.; Bahmani, M.; Bahrasemani, H.; Bailey, A.J.; Bailey, V.R.; Baines, J.T.; Bajic, M.; Bakalis, C.; Baker, O.K.; Bakker, P.J.; Bakshi Gupta, D.; Balaji, S.; Baldin, E.M.; Balek, P.; Balli, F.; Balunas, W.K.; Balz, J.; Banas, E.; Bandyopadhyay, A.; Banerjee, Sw.; Bannoura, A.A.E.; Barak, L.; Barbe, W.M.; Barberio, E.L.; Barberis, D.; Barbero, M.; Barbour, G.; Barillari, T.; Barisits, M-S.; Barkeloo, J.; Barklow, T.; Barnea, R.; Barnes, S.L.; Barnett, B.M.; Barnett, R.M.; Barnovska-Blenessy, Z.; Baroncelli, A.; Barone, G.; Barr, A.J.; Barranco Navarro, L.; Barreiro, F.; Barreiro Guimarães da Costa, J.; Barsov, S.; Bartoldus, R.; Bartolini, G.; Barton, A.E.; Bartos, P.; Basalaev, A.; Bassalat, A.; Basso, M.J.; Bates, R.L.; Batlamous, S.; Batley, J.R.; Batool, B.; Battaglia, M.; Bauce, M.; Bauer, F.; Bauer, K.T.; Bawa, H.S.; Beacham, J.B.; Beau, T.; Beauchemin, P.H.; Becherer, F.; Bechtle, P.;

doi: 10.1016/j.physletb.2019.135145

Search for non-resonant Higgs boson pair production in the bbℓνℓν final state with the ATLAS detector in pp collisions at s=13 TeV

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Abstract

A search for non-resonant Higgs boson pair production, as predicted by the Standard Model, is presented, where one of the Higgs bosons decays via the H→bb channel and the other via one of the H→WW⁎/ZZ⁎/ττ channels. The analysis selection requires events to have at least two b-tagged jets and exactly two leptons (electrons or muons) with opposite electric charge in the final state. Candidate events consistent with Higgs boson pair production are selected using a multi-class neural network discriminant. The analysis uses 139 fb$^{−1}$ of pp collision data recorded at a centre-of-mass energy of 13 TeV by the ATLAS detector at the Large Hadron Collider. An observed (expected) upper limit of 1.2 (0.9−0.3+0.4) pb is set on the non-resonant Higgs boson pair production cross-section at 95% confidence level, which is equivalent to 40 (29−9+14) times the value predicted in the Standard Model.

Country

Switzerland

Related Organizations

University of Geneva
Switzerland

Keywords

500.2, ddc: ddc:500.2

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