Search for direct production of charginos and neutralinos in events with three leptons and missing transverse momentum in = 8 TeV pp collisions with the ATLAS …

Georges Aad,T Abajyan,B Abbott,J Abdallah,S Abdel Khalek,O Abdinov,R Aben,B Abi,M Abolins,OS AbouZeid,H Abramowicz,H Abreu,Y Abulaiti,BS Acharya,L Adamczyk,DL Adams,J Adelman,Stefanie Adomeit,T Adye,T Agatonovic-Jovin,JA Aguilar-Saavedra,M Agustoni,SP Ahlen,A Ahmad,F Ahmadov,G Aielli,TPA Åkesson,G Akimoto,AV Akimov,J Albert,S Albrand,MJ Alconada Verzini,M Aleksa,IN Aleksandrov,C Alexa,G Alexander,G Alexandre,T Alexopoulos,M Alhroob,G Alimonti,L Alio,J Alison,BMM Allbrooke,LJ Allison,PP Allport,SE Allwood-Spiers,J Almond,A Aloisio,R Alon,A Alonso,F Alonso,C Alpigiani,A Altheimer,B Alvarez Gonzalez,MG Alviggi,K Amako,Y Amaral Coutinho,C Amelung,D Amidei,VV Ammosov,SP Amor Dos Santos,A Amorim,S Amoroso,N Amram,G Amundsen,C Anastopoulos,LS Ancu,N Andari,T Andeen,CF Anders,G Anders,KJ Anderson,A Andreazza,V Andrei,XS Anduaga,S Angelidakis,P Anger,A Angerami,F Anghinolfi,AV Anisenkov,N Anjos,A Annovi,A Antonaki,M Antonelli,A Antonov,J Antos,F Anulli,M Aoki,L Aperio Bella,R Apolle,G Arabidze,I Aracena,Y Arai,JP Araque,ATH Arce,JF Arguin,S Argyropoulos,M Arik,AJ Armbruster,O Arnaez,V Arnal,O Arslan,A Artamonov,G Artoni,S Asai,N Asbah,A Ashkenazi,S Ask,B Åsman,L Asquith,K Assamagan,R Astalos,M Atkinson,NB Atlay,B Auerbach,E Auge,K Augsten,M Aurousseau,G Avolio,G Azuelos,Y Azuma,MA Baak,C Bacci,H Bachacou,K Bachas,M Backes,M Backhaus,J Backus Mayes,E Badescu,P Bagiacchi,P Bagnaia,Y Bai,DC Bailey,T Bain,JT Baines,OK Baker,S Baker,P Balek,F Balli,E Banas,Sw Banerjee,D Banfi,A Bangert,AAE Bannoura,V Bansal,HS Bansil,L Barak,SP Baranov,T Barber,EL Barberio

Journal of High Energy Physics（2014）

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摘要

A bstract A search for the direct production of charginos and neutralinos in final states with three leptons and missing transverse momentum is presented. The analysis is based on 20.3 fb− 1 of s= 8 TeV proton-proton collision data delivered by the Large Hadron Collider and recorded with the ATLAS detector. Observations are consistent with the Standard Model expectations and limits are set in R-parity-conserving phenomenological Minimal Supersymmetric Standard Models and in simplified supersymmetric models, significantly extending previous results. For simplified supersymmetric models of direct chargino \left(χ_1^±\right) and next-to-lightest neutralino \left(χ_2^0\right) production with decays to lightest neutralino \left(χ_1^0\right) via either all three generations of sleptons, staus only, gauge bosons, or Higgs bosons, \left(χ_1^±\right) and \left(χ_2^0\right) masses are excluded up to 700 GeV, 380 GeV, 345 …

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