Combination of inclusive top-quark pair production cross-section measurements using ATLAS and CMS data at s = 7 and 8 TeV : Aad, G Abbott, B Abbott, D .C Abed Abud, A Abeling, K Abhayasinghe, D.K Abidi, S.H Aboulhorma, A Abramowicz, H Abreu, H Abulaiti, Y Abusleme Hoffman, A.C Acharya, B.S Achkar, B Adam, L Adam Bourdarios, C Adamczyk, L Adamek, L Addepalli, S.V Adelman, J Adiguzel, A Adorni, S Adye, T Affolder, A.A Afik, Y Agapopoulou, C Agaras, M.N Agarwala, J Aggarwal, A Agheorghiesei, C Aguilar-Saavedra, J.A Ahmad, A Ahmadov, F Ahmed, W.S Ai, X Aielli, G Aizenberg, I Akatsuka, S Akbiyik, M Åkesson, T.P.A Akimov, A.V Al Khoury, K Alberghi, G.L Albert, J Albicocco, P Alconada Verzini, M.J Alderweireldt, S Aleksa, M Aleksandrov, I.N Alexa, C Alexopoulos, T Alfonsi, A Alfonsi, F Alhroob, M Ali, B Ali, S Aliev, M Alimonti, G Allaire, C Allbrooke, B.M.M Allport, P.P Aloisio, A Alonso, F Alpigiani, C Alunno Camelia, E Alvarez Estevez, M Alviggi, M.G Amaral Coutinho, Y Ambler, A Ambroz, L Amelung, C Amidei, D Amor Dos Santos, S.P Amoroso, S Amrouche, C.S Anastopoulos, C Andari, N Andeen, T Anders, J.K Andrean, S.Y Andreazza, A Angelidakis, S Angerami, A Anisenkov, A.V Annovi, A Antel, C Anthony, M.T Antipov, E Antonelli, M Antrim, D.J.A Anulli, F Aoki, M Aparisi Pozo, J.A Aparo, M.A Aperio Bella, L Aranzabal, N Araujo Ferraz, V Arcangeletti, C Arce, A.T.H Arena, E Arguin, J.-F Argyropoulos, S Arling, J.-H Armbruster, A.J Armstrong, A Arnaez, O Arnold, H Arrubarrena Tame, Z.P Artoni, G Asada, H Asai, K Asai, S Asbah, N.A Asimakopoulou, E.M Asquith, L Assahsah, J Assamagan, K Astalos, R Atkin, R.J Atkinson, M Atlay, N.B Atmani, H Atmasiddha, P.A Augsten, K Auricchio, S Austrup, V.A Avner, G Avolio, G Ayoub, M.K Azuelos, G Babal, D Bachacou, H Bachas, K Bachiu, A Backman, F Badea, A Bagnaia, P Bahrasemani, H Bailey, A.J Bailey, V.R Baines, J.T Bakalis, C Baker, O.K Bakker, P.J Bakos, E Bakshi Gupta, D Balaji, S Balasubramanian, R Baldin, E.M Balek, P Ballabene, E Balli, F Balunas, W.K Balz, J Banas, E Bandieramonte, M Bandyopadhyay, A Bansal, S Barak, L Barberio, E.L Barberis, D Barbero, M Barbour, G Barends, K.N Barillari, T Barisits, M.-S Barkeloo, J Barklow, T Barnett, B.M Barnett, R.M Baroncelli, A Barone, G Barr, A.J Barranco Navarro, L Barreiro, F Barreiro Guimarães da Costa, J Barron, U Barsov, S Bartels, F Bartoldus, R Bartolini, G Barton, A.E Bartos, P Basalaev, A Basan, A Baselga, M Bashta, I Bassalat, A Basso, M.J Basson, C.R Bates, R.L Batlamous, S Batley, J.R Batool, B Battaglia, M Bauce, M Bauer, F Bauer, P Bawa, H.S Bayirli, A Beacham, J.B Beau, T Beauchemin, P.H Becherer, F Bechtle, P Beck, H.P Becker, K Becot, C Beddall, A.J Bednyakov, V.A Bee, C.P Beermann, T.A Begalli, M Begel, M Behera, A Behr, J.K Beirao Da Cruz E Silva, C Beirer, J.F Beisiegel, F Belfkir, M Bella, G Bellagamba, L Bellerive, A Bellos, P Beloborodov, K Belotskiy, K Belyaev, N.L Benchekroun, D Benhammou, Y Benjamin, D.P Benoit, M Bensinger, J.R Bentvelsen, S Beresford, L Beretta, M Berge, D Bergeaas Kuutmann, E Berger, N Bergmann, B Bergsten, L.J Beringer, J Berlendis, S Bernardi, G Bernius, C Bernlochner, F.U Berry, T Berta, P Berthold, A Bertram, I.A Bessidskaia Bylund, O Bethke, S Betti, A Bevan, A.J Bhatta, S Bhattacharya, D.S Bhattarai, P Bhopatkar, V.S Bi, R Bianchi, R.M Biebel, O Bielski, R Biesuz, N.V Biglietti, M Billoud, T.R.V Bindi, M Bingul, A Bini, C Biondi, S Biondini, A Birch-sykes, C.J Bird, G.A Birman, M Bisanz, T Biswas, D Bitadze, A Bittrich, C Bjørke, K Bloch, I Blocker, C Blue, A Blumenschein, U Blumenthal, J Bobbink, G.J Bobrovnikov, V.S Boehler, M Bogavac, D Bogdanchikov, A.G Bohm, C Boisvert, V Bokan, P Bold, T Bomben, M Bona, M Boonekamp, M Booth, C.D Borbély, A.G Borecka-Bielska, H.M Borgna, L.S Borissov, G Bortoletto, D Boscherini, D Bosman, M Bossio Sola, J.D Bouaouda, K Boudreau, J Bouhova-Thacker, E.V Boumediene, D Bouquet, R Boveia, A Boyd, J Boye, D Boyko, I.R Bozson, A.J Bracinik, J Brahimi, N Brandt, G Brandt, O Braren, F Brau, B Brau, J.E Breaden Madden, W.D Brendlinger, K Brener, R Brenner, L Brenner, R Bressler, S Brickwedde, B Briglin, D.L Britton, D Britzger, D Brock, I Brock, R Brooijmans, G Brooks, W.K Brost, E Bruckman de Renstrom, P.A Brüers, B Bruncko, D Bruni, A Bruni, G Bruschi, M Bruscino, N Bryngemark, L Buanes, T Buat, Q Buchholz, P Buckley, A.G Budagov, I.A Bugge, M.K Bulekov, O Bullard, B.A Burdin, S Burgard, C.D Burger, A.M Burghgrave, B Burr, J.T.P Burton, C.D Burzynski, J.C Busch, E.L Büscher, V Bussey, P.J Butler, J.M Buttar, C.M Butterworth, J.M Buttinger, W Buxo Vazquez, C.J Buzykaev, A.R Cabras, G Cabrera Urbán, S Caforio, D Cai, H Cairo, V.M.M Cakir, O Calace, N Calafiura, P Calderini, G Calfayan, P Callea, G Caloba, L.P Calvente Lopez, S Calvet, D Calvet, S Calvet, T.P Calvetti, M Camacho Toro, R Camarda, S Camarero Munoz, D Camarri, P Camerlingo, M.T Cameron, D Camincher, C Campanelli, M Camplani, A Canale, V Canesse, A Cano Bret, M Cantero, J Cao, Y 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