Observation of spin correlation in tt¯ events from pp collisions at √s=7 TeV using the ATLAS detector.

Published

Journal Article

A measurement of spin correlation in tt[over ¯] production is reported using data collected with the ATLAS detector at the LHC, corresponding to an integrated luminosity of 2.1 fb(-1). Candidate events are selected in the dilepton topology with large missing transverse energy and at least two jets. The difference in azimuthal angle between the two charged leptons in the laboratory frame is used to extract the correlation between the top and antitop quark spins. In the helicity basis the measured degree of correlation corresponds to A(helicity)=0.40(-0.08)(+0.09), in agreement with the next-to-leading-order standard model prediction. The hypothesis of zero spin correlation is excluded at 5.1 standard deviations.

Full Text

Duke Authors

Cited Authors

  • Aad, G; Abbott, B; Abdallah, J; Abdel Khalek, S; Abdelalim, AA; Abdesselam, A; Abdinov, O; Abi, B; Abolins, M; Abouzeid, OS; Abramowicz, H; Abreu, H; Acerbi, E; Acharya, BS; Adamczyk, L; Adams, DL; Addy, TN; Adelman, J; Aderholz, M; Adomeit, S; Adragna, P; Adye, T; Aefsky, S; Aguilar-Saavedra, JA; Aharrouche, M; Ahlen, SP; Ahles, F; Ahmad, A; Ahsan, M; Aielli, G; Akdogan, T; Akesson, TPA; Akimoto, G; Akimov, AV; Akiyama, A; Alam, MS; Alam, MA; Albert, J; Albrand, S; Aleksa, M; Aleksandrov, IN; Alessandria, F; Alexa, C; Alexander, G; Alexandre, G; Alexopoulos, T; Alhroob, M; Aliev, M; Alimonti, G; Alison, J; Aliyev, M; Allbrooke, BMM; Allport, PP; Allwood-Spiers, SE; Almond, J; Aloisio, A; Alon, R; Alonso, A; Alvarez Gonzalez, B; Alviggi, MG; Amako, K; Amaral, P; Amelung, C; Ammosov, VV; Amorim, A; Amorós, G; Amram, N; Anastopoulos, C; Ancu, LS; Andari, N; Andeen, T; Anders, CF; Anders, G; Anderson, KJ; Andreazza, A; Andrei, V; Andrieux, M-L; Anduaga, XS; Angerami, A; Anghinolfi, F; Anisenkov, A; Anjos, N; Annovi, A; Antonaki, A; Antonelli, M; Antonov, A; Antos, J; Anulli, F; Aoun, S; Bella, LA; Apolle, R; Arabidze, G; Aracena, I; Arai, Y; Arce, ATH; Arfaoui, S; Arguin, J-F; Arik, E; Arik, M; Armbruster, AJ; Arnaez, O; Arnal, V; Arnault, C; Artamonov, A; Artoni, G; Arutinov, D; Asai, S; Asfandiyarov, R; Ask, S; Asman, B; Asquith, L; Assamagan, K; Astbury, A; Astvatsatourov, A; Aubert, B; Auge, E; Augsten, K; Aurousseau, M; Avolio, G; Avramidou, R; Axen, D; Ay, C; Azuelos, G; Azuma, Y; Baak, MA; Baccaglioni, G; Bacci, C; Bach, AM; Bachacou, H; Bachas, K; Backes, M; Backhaus, M; Badescu, E; Bagnaia, P; Bahinipati, S; Bai, Y; Bailey, DC; Bain, T; Baines, JT; Baker, OK; Baker, MD; Baker, S; Banas, E; Banerjee, P; Banerjee, S; Banfi, D; Bangert, A; Bansal, V; Bansil, HS; Barak, L; Baranov, SP; Barashkou, A; Barbaro Galtieri, A; Barber, T; Barberio, EL; Barberis, D; Barbero, M; Bardin, DY; Barillari, T; Barisonzi, M; Barklow, T; Barlow, N; Barnett, BM; Barnett, RM; Baroncelli, A; Barone, G; Barr, AJ; Barreiro, F; da Costa, JBG; Barrillon, P; Bartoldus, R; Barton, AE; Bartsch, V; Bates, RL; Batkova, L; Batley, JR; Battaglia, A; Battistin, M; Bauer, F; Bawa, HS; Beale, S; Beau, T; Beauchemin, PH; Beccherle, R; Bechtle, P; Beck, HP; Becker, S; Beckingham, M; Becks, KH; Beddall, AJ; Beddall, A; Bedikian, S; Bednyakov, VA; Bee, CP; Begel, M; Harpaz, SB; Behera, PK; Beimforde, M; Belanger-Champagne, C; Bell, PJ; Bell, WH; Bella, G; Bellagamba, L; Bellina, F; Bellomo, M; Belloni, A; Beloborodova, O; Belotskiy, K; Beltramello, O; Benary, O; Benchekroun, D; Benchouk, C; Bendel, M; Benekos, N; Benhammou, Y; Benhar Noccioli, E; Benitez Garcia, JA; Benjamin, DP; Benoit, M; Bensinger, JR; Benslama, K; Bentvelsen, S; Berge, D; Kuutmann, EB; Berger, N; Berghaus, F; Berglund, E; Beringer, J; Bernat, P; Bernhard, R; Bernius, C; Berry, T; Bertella, C; Bertin, A; Bertinelli, F; Bertolucci, F; Besana, MI; Besson, N; Bethke, S; Bhimji, W; Bianchi, RM; Bianco, M; Biebel, O; Bieniek, SP; Bierwagen, K; Biesiada, J; Biglietti, M; Bilokon, H; Bindi, M; Binet, S; Bingul, A; Bini, C; Biscarat, C; Bitenc, U; Black, KM; Blair, RE; Blanchard, J-B; Blanchot, G; Blazek, T; Blocker, C; Blocki, J; Blondel, A; Blum, W; Blumenschein, U; Bobbink, GJ; Bobrovnikov, VB; Bocchetta, SS; Bocci, A; Boddy, CR; Boehler, M; Boek, J; Boelaert, N; Bogaerts, JA; Bogdanchikov, A; Bogouch, A; Bohm, C; Bohm, J; Boisvert, V; Bold, T; Boldea, V; Bolnet, NM; Bomben, M; Bona, M; Bondarenko, VG; Bondioli, M; Boonekamp, M; Booth, CN; Bordoni, S; Borer, C; Borisov, A; Borissov, G; Borjanovic, I; Borri, M; Borroni, S; Bortolotto, V; Bos, K; Boscherini, D; Bosman, M; Boterenbrood, H; Botterill, D; Bouchami, J; Boudreau, J; Bouhova-Thacker, EV; Boumediene, D; Bourdarios, C; Bousson, N; Boveia, A; Boyd, J; Boyko, IR; Bozhko, NI; Bozovic-Jelisavcic, I; Bracinik, J; Braem, A; Branchini, P; Brandenburg, GW; Brandt, A; Brandt, G; Brandt, O; Bratzler, U; Brau, B; Brau, JE; Braun, HM; Brelier, B; Bremer, J; Brendlinger, K; Brenner, R; Bressler, S; Britton, D; Brochu, FM; Brock, I; Brock, R; Brodbeck, TJ; Brodet, E; Broggi, F; Bromberg, C; Bronner, J; Brooijmans, G; Brooks, WK; Brown, G; Brown, H; Bruckman de Renstrom, PA; Bruncko, D; Bruneliere, R; Brunet, S; Bruni, A; Bruni, G; Bruschi, M; Buanes, T; Buat, Q; Bucci, F; Buchanan, J; Buchanan, NJ; Buchholz, P; Buckingham, RM; Buckley, AG; Buda, SI; Budagov, IA; Budick, B; Büscher, V; Bugge, L; Bulekov, O; Bunse, M; Buran, T; Burckhart, H; Burdin, S; Burgess, T; Burke, S; Busato, E; Bussey, P; Buszello, CP; Butin, F; Butler, B; Butler, JM; Buttar, CM; Butterworth, JM; Buttinger, W; Cabrera Urbán, S; Caforio, D; Cakir, O; Calafiura, P; Calderini, G; Calfayan, P; Calkins, R; Caloba, LP; Caloi, R; Calvet, D; Calvet, S; Camacho Toro, R; Camarri, P; Cambiaghi, M; Cameron, D; Caminada, LM; Campana, S; Campanelli, M; Canale, V; Canelli, F; Canepa, A; Cantero, J; Capasso, L; Capeans Garrido, MDM; Caprini, I; Caprini, M; Capriotti, D; Capua, M; Caputo, R; Cardarelli, R; Carli, T; Carlino, G; Carminati, L; Caron, B; Caron, S; Carquin, E; Carrillo Montoya, GD; Carter, AA; Carter, JR; Carvalho, J; Casadei, D; Casado, MP; Cascella, M; Caso, C; Castaneda Hernandez, AM; Castaneda-Miranda, E; Castillo Gimenez, V; Castro, NF; Cataldi, G; Cataneo, F; Catinaccio, A; Catmore, JR; Cattai, A; Cattani, G; Caughron, S; Cauz, D; Cavalleri, P; Cavalli, D; Cavalli-Sforza, M; Cavasinni, V; Ceradini, F; Cerqueira, AS; Cerri, A; Cerrito, L; Cerutti, F; Cetin, SA; Cevenini, F; Chafaq, A; Chakraborty, D; Chan, K; Chapleau, B; Chapman, JD; Chapman, JW; Chareyre, E; Charlton, DG; Chavda, V; Chavez Barajas, CA; Cheatham, S; Chekanov, S; Chekulaev, SV; Chelkov, GA; Chelstowska, MA; Chen, C; Chen, H; Chen, S; Chen, T; Chen, X; Cheng, S; Cheplakov, A; Chepurnov, VF; El Moursli, RC; Chernyatin, V; Cheu, E; Cheung, SL; Chevalier, L; Chiefari, G; Chikovani, L; Childers, JT; Chilingarov, A; Chiodini, G; Chisholm, AS; Chislett, RT; Chizhov, MV; Choudalakis, G; Chouridou, S; Christidi, IA; Christov, A; Chromek-Burckhart, D; Chu, ML; Chudoba, J; Ciapetti, G; Ciftci, AK; Ciftci, R; Cinca, D; Cindro, V; Ciobotaru, MD; Ciocca, C; Ciocio, A; Cirilli, M; Citterio, M; Ciubancan, M; Clark, A; Clark, PJ; Cleland, W et al.

Published Date

  • May 24, 2012

Published In

Volume / Issue

  • 108 / 21

Start / End Page

  • 212001 -

PubMed ID

  • 23003244

Pubmed Central ID

  • 23003244

Electronic International Standard Serial Number (EISSN)

  • 1079-7114

International Standard Serial Number (ISSN)

  • 0031-9007

Digital Object Identifier (DOI)

  • 10.1103/physrevlett.108.212001

Language

  • eng