Search for a light pseudoscalar Higgs boson in the dimuon decay channel in pp collisions at √s=7TeV : Chatrchyan, S Khachatryan, V Sirunyan, A. M Tumasyan, A Adam, W Bergauer, T Dragicevic, M Ero, J Fabjan, C Friedl, M Frühwirth, R Ghete, V. M Hammer, J Hormann, N Hrubec, J Jeitler, M Kiesenhofer, W Knünz, V Krammer, M Liko, D Mikulec, I Pernicka, M Rahbaran, B Rohringer, C Rohringer, H Schofbeck, R Strauss, J Taurok, A Wagner, P Waltenberger, W Walzel, G Widl, E Wulz, C. E Mossolov, V Shumeiko, N Suarez Gonzalez, J Bansal, S Cornelis, T De Wolf, E. A Janssen, X Luyckx, S Maes, T Mucibello, L Ochesanu, S Roland, B Rougny, R Selvaggi, M Staykova, Z Van Haevermaet, H Van Mechelen, P Van Remortel, N Van Spilbeeck, A Blekman, F Blyweert, S D'hondt, J Gonzalez Suarez, R Kalogeropoulos, A Maes, M Olbrechts, A Van Doninck, W Van Mulders, P Van Onsem, G. P Villella, I Clerbaux, B De Lentdecker, G Dero, V Gay, A. P. R Hreus, T Leonard, A Marage, P .E Reis, T Thomas, L Van Der Velde, C Vanlaer, P Wang, J Adler, V Beernaert, K Cimmino, A Costantini, S Garcia, G Grunewald, M Klein, B Lellouch, J Marinov, A Mccartin, J Ocampo Rios, A. A Ryckbosch, D Strobbe, N Thyssen, F Tytgat, M Vanelderen, L Verwilligen, P Walsh, S Yazgan, E Zaganidis, N Basegmez, S Bruno, G Castello, R Caudron, A Ceard, L Delaere, C Du Pree, T Favart, D Forthomme, L Giammanco, A Hollar, J Lemaitre, V Liao, J Militaru, O Nuttens, C Pagano, D Perrini, L Pin, A Piotrzkowski, K Schul, N Vizan Garcia, J.M Beliy, N Caebergs, T Daubie, E Hammad, G.H Alves, G.A Correa Martins Junior, M De Jesus Damiao, D Martins, T Pol, M.E Souza, M.H.G Aldá Júnior, W.L Carvalho, W Custódio, A Da Costa, E.M De Oliveira Martins, C Fonseca De Souza, S Matos Figueiredo, D Mundim, L Nogima, H Oguri, V Prado Da Silva, W.L Santoro, A Soares Jorge, L Sznajder, A Bernardes, C.A Dias, F.A Fernandez Perez Tomei, T.R Gregores, E.M Lagana, C Marinho, F Mercadante, P.G Novaes, S.F Padula, S.S Genchev, V Iaydjiev, P Piperov, S Rodozov, M Stoykova, S Sultanov, G Tcholakov, V Trayanov, R Vutova, M Dimitrov, A Hadjiiska, R Kozhuharov, V Litov, L Pavlov, B Petkov, P Bian, J.G Chen, G.M Chen, H.S Jiang, C.H Liang, D Liang, S Meng, X Tao, J Wang, J Wang, X Wang, Z Xiao, H Xu, M Zang, J Zhang, Z Asawatangtrakuldee, C Ban, Y Guo, S Guo, Y Li, W Liu, S Mao, Y Qian, S.J Teng, H Wang, S Zhu, B Zou, W Avila, C Gomez, J.P Gomez Moreno, B Osorio Oliveros, A.F Sanabria, J.C Godinovic, N Lelas, D Plestina, R Polic, D Puljak, I Antunovic, Z Kovac, M Brigljevic, V Duric, S Kadija, K Luetic, J Morovic, S Attikis, A Galanti, M Mavromanolakis, G Mousa, J Nicolaou, C Ptochos, F Razis, P.A Finger, M Finger, M Assran, Y Elgammal, S Ellithi Kamel, A Khalil, S Mahmoud, M.A Radi, A Kadastik, M Müntel, M Raidal, M Rebane, L Tiko, A Azzolini, V Eerola, P Fedi, G Voutilainen, M Härkönen, J Heikkinen, A Karimäki, V Kinnunen, R Kortelainen, M.J Lampén, T Lassila-Perini, K Lehti, S Lindén, T Luukka, P Mäenpää, T Peltola, T Tuominen, E Tuominiemi, J Tuovinen, E Ungaro, D Wendland, L Banzuzi, K Karjalainen, A Korpela, A Tuuva, T Besancon, M Choudhury, S Dejardin, M Denegri, D Fabbro, B Faure, J.L Ferri, F Ganjour, S Givernaud, A Gras, P Hamel De Monchenault, G Jarry, P Locci, E Malcles, J Millischer, L Nayak, A Rander, J Rosowsky, A Shreyber, I Titov, M Baffioni, S Beaudette, F Benhabib, L Bianchini, L Bluj, M Broutin, C Busson, P Charlot, C Daci, N Dahms, T Dobrzynski, L Granier De Cassagnac, R Haguenauer, M Miné, P Mironov, C Nguyen, M Ochando, C Paganini, P Sabes, D Salerno, R Sirois, Y Veelken, C Zabi, A Agram, J.-L Andrea, J Bloch, D Bodin, D Brom, J.-M Cardaci, M Chabert, E.C Collard, C Conte, E Drouhin, F Ferro, C Fontaine, J.-C Gelé, D Goerlach, U Juillot, P Le Bihan, A.-C Van Hove, P Fassi, F Mercier, D Beauceron, S Beaupere, N Bondu, O Boudoul, G Chasserat, J Chierici, R Contardo, D Depasse, P El Mamouni, H Fay, J Gascon, S Gouzevitch, M Ille, B Kurca, T Lethuillier, M Mirabito, L Perries, S Sordini, V Tosi, S Tschudi, Y Verdier, P Viret, S Tsamalaidze, Z Anagnostou, G Beranek, S Edelhoff, M Feld, L Heracleous, N Hindrichs, O Jussen, R Klein, K Merz, J Ostapchuk, A Perieanu, A Raupach, F Sammet, J Schael, S Sprenger, D Weber, H Wittmer, B Zhukov, V Ata, M Caudron, J Dietz-Laursonn, E Duchardt, D Erdmann, M Fischer, R Güth, A Hebbeker, T Heidemann, C Hoepfner, K Klingebiel, D Kreuzer, P Lingemann, J Magass, C Merschmeyer, M Meyer, A Olschewski, M Papacz, P Pieta, H Reithler, H Schmitz, S.A Sonnenschein, L Steggemann, J Teyssier, D Weber, M Bontenackels, M Cherepanov, V Flügge, G Geenen, H Geisler, M Haj Ahmad, W Hoehle, F Kargoll, B Kress, T Kuessel, Y Nowack, A Perchalla, L Pooth, O Rennefeld, J Sauerland, P Stahl, A Aldaya Martin, M Behr, J Behrenhoff, W Sharif University of Technology APS