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Search for direct top squark pair production in final states with two leptons in s = 13 TeV pp collisions with the ATLAS detector.

Publication ,  Journal Article
Aaboud, M; Aad, G; Abbott, B; Abdinov, O; Abeloos, B; Abidi, SH; AbouZeid, OS; Abraham, NL; Abramowicz, H; Abreu, H; Abreu, R; Abulaiti, Y ...
Published in: The European physical journal. C, Particles and fields
January 2017

The results of a search for direct pair production of top squarks in events with two opposite-charge leptons (electrons or muons) are reported, using 36.1 fb - 1 of integrated luminosity from proton-proton collisions at s = 13 TeV collected by the ATLAS detector at the Large Hadron Collider. To cover a range of mass differences between the top squark t ~ and lighter supersymmetric particles, four possible decay modes of the top squark are targeted with dedicated selections: the decay t ~ → b χ ~ 1 ± into a b-quark and the lightest chargino with χ ~ 1 ± → W χ ~ 1 0 , the decay t ~ → t χ ~ 1 0 into an on-shell top quark and the lightest neutralino, the three-body decay t ~ → b W χ ~ 1 0 and the four-body decay t ~ → b ℓ ν χ ~ 1 0 . No significant excess of events is observed above the Standard Model background for any selection, and limits on top squarks are set as a function of the t ~ and χ ~ 1 0 masses. The results exclude at 95% confidence level t ~ masses up to about 720 GeV, extending the exclusion region of supersymmetric parameter space covered by previous searches.

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Published In

The European physical journal. C, Particles and fields

DOI

EISSN

1434-6052

ISSN

1434-6044

Publication Date

January 2017

Volume

77

Issue

12

Start / End Page

898

Related Subject Headings

  • Nuclear & Particles Physics
  • 5107 Particle and high energy physics
  • 5102 Atomic, molecular and optical physics
  • 5101 Astronomical sciences
  • 0206 Quantum Physics
  • 0202 Atomic, Molecular, Nuclear, Particle and Plasma Physics
 

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Aaboud, M., Aad, G., Abbott, B., Abdinov, O., Abeloos, B., Abidi, S. H., … Cobal, M. (2017). Search for direct top squark pair production in final states with two leptons in s = 13 TeV pp collisions with the ATLAS detector. The European Physical Journal. C, Particles and Fields, 77(12), 898. https://doi.org/10.1140/epjc/s10052-017-5445-x
Aaboud, M., G. Aad, B. Abbott, O. Abdinov, B. Abeloos, S. H. Abidi, O. S. AbouZeid, et al. “Search for direct top squark pair production in final states with two leptons in s = 13 TeV pp collisions with the ATLAS detector.The European Physical Journal. C, Particles and Fields 77, no. 12 (January 2017): 898. https://doi.org/10.1140/epjc/s10052-017-5445-x.
Aaboud M, Aad G, Abbott B, Abdinov O, Abeloos B, Abidi SH, et al. Search for direct top squark pair production in final states with two leptons in s = 13 TeV pp collisions with the ATLAS detector. The European physical journal C, Particles and fields. 2017 Jan;77(12):898.
Aaboud, M., et al. “Search for direct top squark pair production in final states with two leptons in s = 13 TeV pp collisions with the ATLAS detector.The European Physical Journal. C, Particles and Fields, vol. 77, no. 12, Jan. 2017, p. 898. Epmc, doi:10.1140/epjc/s10052-017-5445-x.
Aaboud M, Aad G, Abbott B, Abdinov O, Abeloos B, Abidi SH, AbouZeid OS, Abraham NL, Abramowicz H, Abreu H, Abreu R, Abulaiti Y, Acharya BS, Adachi S, Adamczyk L, Adelman J, Adersberger M, Adye T, Affolder AA, Afik Y, Agatonovic-Jovin T, Agheorghiesei C, Aguilar-Saavedra JA, Ahlen SP, Ahmadov F, Aielli G, Akatsuka S, Akerstedt H, Åkesson TPA, Akilli E, Akimov AV, Alberghi GL, Albert J, Albicocco P, AlconadaVerzini MJ, Alderweireldt SC, Aleksa M, Aleksandrov IN, Alexa C, Alexander G, Alexopoulos T, Alhroob M, Ali B, Aliev M, Alimonti G, Alison J, Alkire SP, Allbrooke BMM, Allen BW, Allport PP, Aloisio A, Alonso A, Alonso F, Alpigiani C, Alshehri AA, Alstaty MI, AlvarezGonzalez B, ÁlvarezPiqueras D, Alviggi MG, Amadio BT, AmaralCoutinho Y, Amelung C, Amidei D, AmorDosSantos SP, Amoroso S, Amundsen G, Anastopoulos C, Ancu LS, Andari N, Andeen T, Anders CF, Anders JK, Anderson KJ, Andreazza A, Andrei V, Angelidakis S, Angelozzi I, Angerami A, Anisenkov AV, Anjos N, Annovi A, Antel C, 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Bauer F, Bawa HS, Beacham JB, Beattie MD, Beau T, Beauchemin PH, Bechtle P, Beck HP, Beck HC, Becker K, Becker M, Becot C, Beddall AJ, Beddall A, Bednyakov VA, Bedognetti M, Bee CP, Beermann TA, Begalli M, Begel M, Behr JK, Bell AS, Bella G, Bellagamba L, Bellerive A, Bellomo M, Belotskiy K, Beltramello O, Belyaev NL, Benary O, Benchekroun D, Bender M, Bendtz K, Benekos N, Benhammou Y, Benhar Noccioli E, Benitez J, Benjamin DP, Benoit M, Bensinger JR, Bentvelsen S, Beresford L, Beretta M, Berge D, Bergeaas Kuutmann E, Berger N, Beringer J, Berlendis S, Bernard NR, Bernardi G, Bernius C, Bernlochner FU, Berry T, Berta P, Bertella C, Bertoli G, Bertolucci F, Bertram IA, Bertsche C, Bertsche D, Besjes GJ, Bessidskaia Bylund O, Bessner M, Besson N, Bethani A, Bethke S, Bevan AJ, Beyer J, Bianchi RM, Biebel O, Biedermann D, Bielski R, Bierwagen K, Biesuz NV, Biglietti M, Billoud TRV, Bilokon H, Bindi M, Bingul A, Bini C, Biondi S, Bisanz T, Bittrich C, Bjergaard DM, Black JE, Black KM, Blair RE, Blazek T, Bloch I, Blocker C, Blue A, Blum W, Blumenschein U, Blunier S, Bobbink GJ, Bobrovnikov VS, Bocchetta SS, Bocci A, Bock C, Boehler M, Boerner D, Bogavac D, Bogdanchikov AG, Bohm C, Boisvert V, Bokan P, Bold T, Boldyrev AS, Bolz AE, Bomben M, Bona M, Boonekamp M, Borisov A, Borissov G, Bortfeldt J, Bortoletto D, Bortolotto V, Boscherini D, Bosman M, Bossio Sola JD, Boudreau J, Bouffard J, Bouhova-Thacker EV, Boumediene D, Bourdarios C, Boutle SK, Boveia A, Boyd J, Boyko IR, Bracinik J, Brandt A, Brandt G, Brandt O, Bratzler U, Brau B, Brau JE, Breaden Madden WD, Brendlinger K, Brennan AJ, Brenner L, Brenner R, Bressler S, Briglin DL, Bristow TM, Britton D, Britzger D, Brochu FM, Brock I, Brock R, Brooijmans G, Brooks T, Brooks WK, Brosamer J, Brost E, Broughton JH, Bruckman de Renstrom PA, Bruncko D, Bruni A, Bruni G, Bruni LS, Bruno S, Brunt BH, Bruschi M, Bruscino N, Bryant P, Bryngemark L, Buanes T, Buat Q, Buchholz P, Buckley AG, Budagov IA, Buehrer F, Bugge MK, Bulekov O, Bullock D, Burch TJ, Burdin S, Burgard CD, Burger AM, Burghgrave B, Burka K, Burke S, Burmeister I, Burr JTP, Busato E, Büscher D, Büscher V, Bussey P, Butler JM, Buttar CM, Butterworth JM, Butti P, Buttinger W, Buzatu A, Buzykaev AR, Cabrera Urbán S, Caforio D, Cairo VM, Cakir O, Calace N, Calafiura P, Calandri A, Calderini G, Calfayan P, Callea G, Caloba LP, Calvente Lopez S, Calvet D, Calvet S, Calvet TP, Camacho Toro R, Camarda S, Camarri P, Cameron D, Caminal Armadans R, Camincher C, Campana S, Campanelli M, Camplani A, Campoverde A, Canale V, Cano Bret M, Cantero J, Cao T, Capeans Garrido MDM, Caprini I, Caprini M, Capua M, Carbone RM, Cardarelli R, Cardillo F, Carli I, Carli T, Carlino G, Carlson BT, Carminati L, Carney RMD, Caron S, Carquin E, Carrá S, Carrillo-Montoya GD, Casadei D, Casado MP, Casolino M, Casper DW, Castelijn R, Castillo Gimenez V, Castro NF, Catinaccio A, Catmore JR, Cattai A, Caudron J, Cavaliere V, Cavallaro E, Cavalli D, Cavalli-Sforza M, Cavasinni V, Celebi E, Ceradini F, Cerda Alberich L, Cerqueira AS, Cerri A, Cerrito L, Cerutti F, Cervelli A, Cetin SA, Chafaq A, Chakraborty D, Chan SK, Chan WS, Chan YL, Chang P, Chapman JD, Charlton DG, Chau CC, Chavez Barajas CA, Che S, Cheatham S, Chegwidden A, Chekanov S, Chekulaev SV, Chelkov GA, Chelstowska MA, Chen C, Chen H, Chen J, Chen S, Chen X, Chen Y, Cheng HC, Cheng HJ, Cheplakov A, Cheremushkina E, Cherkaoui El Moursli R, Cheu E, Cheung K, Chevalier L, Chiarella V, Chiarelli G, Chiodini G, Chisholm AS, Chitan A, Chiu YH, Chizhov MV, Choi K, Chomont AR, Chouridou S, Chow YS, Christodoulou V, Chu MC, Chudoba J, Chuinard AJ, Chwastowski JJ, Chytka L, Ciftci AK, Cinca D, Cindro V, Cioara IA, Ciocca C, Ciocio A, Cirotto F, Citron ZH, Citterio M, Ciubancan M, Clark A, Clark BL, Clark MR, Clark PJ, Clarke RN, Clement C, Coadou Y, Cobal M. Search for direct top squark pair production in final states with two leptons in s = 13 TeV pp collisions with the ATLAS detector. The European physical journal C, Particles and fields. 2017 Jan;77(12):898.
Journal cover image

Published In

The European physical journal. C, Particles and fields

DOI

EISSN

1434-6052

ISSN

1434-6044

Publication Date

January 2017

Volume

77

Issue

12

Start / End Page

898

Related Subject Headings

  • Nuclear & Particles Physics
  • 5107 Particle and high energy physics
  • 5102 Atomic, molecular and optical physics
  • 5101 Astronomical sciences
  • 0206 Quantum Physics
  • 0202 Atomic, Molecular, Nuclear, Particle and Plasma Physics