Evidence for CP violation in time- integrated D-0 -> h(-)h(+) decay rates

Aaij, R. et al. (2012) Evidence for CP violation in time- integrated D-0 -> h(-)h(+) decay rates. Physical Review Letters, 108(11), 111602. (doi: 10.1103/PhysRevLett.108.111602)

Abstract

A search for time-integrated CP violation in D⁰→h^-h⁺ (h=K, π) decays is presented using 0.62  fb^-1 of data collected by LHCb in 2011. The flavor of the charm meson is determined by the charge of the slow pion in the D^*+→D⁰π⁺ and D^*-→D̅⁰π^- decay chains. The difference in CP asymmetry between D⁰→K^-K⁺ and D⁰→π^-π⁺, ΔA_CP≡A_CP(K^-K⁺)-A_CP(π^-π⁺), is measured to be [-0.82±0.21(stat)±0.11(syst)]%. This differs from the hypothesis of CP conservation by 3.5 standard deviations.

• Item Type: Articles
• Additional Information: A correction to this article is available at https://doi.org/10.1103/PhysRevLett.108.129903.
• Status: Published
• Refereed: Yes
• Glasgow Author(s) Enlighten ID: Pappagallo, Dr Marco and Alexander, Dr Michael and Sail, Mr Paul and Schiller, Dr Manuel and Spradlin, Dr Patrick and MacRaighne, Dr Aaron and Rodrigues, Dr Eduardo and Parkes, Dr Christopher and Bates, Mrs Alison and Ogilvy, Mr Stephen and Soler, Professor Paul and Borghi, Dr Silvia and Plackett, Dr Richard and Eklund, Prof Lars and Hynds, Dr Daniel
• Authors: Aaij, R., Abellan Beteta, C., Adeva, B., Adinolfi, M., Adrover, C., Affolder, A., Ajaltouni, Z., Albrecht, J., Alessio, F., Alexander, M., Alkhazov, G., Alvarez Cartelle, P., Alves, A., Amato, S., Amhis, Y., Anderson, J., Appleby, R., Aquines Gutierrez, O., Archilli, F., Arrabito, L., Artamonov, A., Artuso, M., Aslanides, E., Auriemma, G., Bachmann, S., Back, J., Bailey, D., Balagura, V., Baldini, W., Barlow, R., Barschel, C., Barsuk, S., Barter, W., Bates, A., Bauer, C., Bauer, T., Bay, A., Bediaga, I., Belogurov, S., Belous, K., Belyaev, I., Ben-Haim, E., Benayoun, M., Bencivenni, G., Benson, S., Benton, J., Bernet, R., Bettler, M.-O., van Beuzekom, M., Bien, A., Bifani, S., Bird, T., Bizzeti, A., Bjørnstad, P., Blake, T., Blanc, F., Blanks, C., Blouw, J., Blusk, S., Bobrov, A., Bocci, V., Bondar, A., Bondar, N., Bonivento, W., Borghi, S., Borgia, A., Bowcock, T., Bozzi, C., Brambach, T., van den Brand, J., Bressieux, J., Brett, D., Britsch, M., Britton, T., Brook, N., Brown, H., Büchler-Germann, A., Burducea, I., Bursche, A., Buytaert, J., Cadeddu, S., Callot, O., Calvi, M., Calvo Gomez, M., Camboni, A., Campana, P., Carbone, A., Carboni, G., Cardinale, R., Cardini, A., Carson, L., Carvalho Akiba, K., Casse, G., Cattaneo, M., Cauet, C., Charles, M., Charpentier, P., Chiapolini, N., Ciba, K., Cid Vidal, X., Ciezarek, G., Clarke, P., Clemencic, M., Cliff, H., Closier, J., Coca, C., Coco, V., Cogan, J., Collins, P., Comerma-Montells, A., Constantin, F., Contu, A., Cook, A., Coombes, M., Corti, G., Cowan, G., Currie, R., D’Ambrosio, C., David, P., David, P., De Bonis, I., De Capua, S., De Cian, M., De Lorenzi, F., De Miranda, J., De Paula, L., De Simone, P., Decamp, D., Deckenhoff, M., Degaudenzi, H., Del Buono, L., Deplano, C., Derkach, D., Deschamps, O., Dettori, F., Dickens, J., Dijkstra, H., Diniz Batista, P., Domingo Bonal, F., Donleavy, S., Dordei, F., Dosil Suárez, A., Dossett, D., Dovbnya, A., Dupertuis, F., Dzhelyadin, R., Dziurda, A., Easo, S., Egede, U., Egorychev, V., Eidelman, S., van Eijk, D., Eisele, F., Eisenhardt, S., Ekelhof, R., Eklund, L., Elsasser, C., Elsby, D., Esperante Pereira, D., Estève, L., Falabella, A., Fanchini, E., Färber, C., Fardell, G., Farinelli, C., Farry, S., Fave, V., Fernandez Albor, V., Ferro-Luzzi, M., Filippov, S., Fitzpatrick, C., Fontana, M., Fontanelli, F., Forty, R., Frank, M., Frei, C., Frosini, M., Furcas, S., Gallas Torreira, A., Galli, D., Gandelman, M., Gandini, P., Gao, Y., Garnier, J.-C., Garofoli, J., Garra Tico, J., Garrido, L., Gascon, D., Gaspar, C., Gauvin, N., Gersabeck, M., Gershon, T., Ghez, P., Gibson, V., Gligorov, V., Göbel, C., Golubkov, D., Golutvin, A., Gomes, A., Gordon, H., Grabalosa Gándara, M., Graciani Diaz, R., Granado Cardoso, L., Graugés, E., Graziani, G., Grecu, A., Greening, E., Gregson, S., Gui, B., Gushchin, E., Guz, Y., Gys, T., Haefeli, G., Haen, C., Haines, S., Hampson, T., Hansmann-Menzemer, S., Harji, R., Harnew, N., Harrison, J., Harrison, P., Hartmann, T., He, J., Heijne, V., Hennessy, K., Henrard, P., Hernando Morata, J., van Herwijnen, E., Hicks, E., Holubyev, K., Hopchev, P., Hulsbergen, W., Hunt, P., Huse, T., Huston, R., Hutchcroft, D., Hynds, D., Iakovenko, V., Ilten, P., Imong, J., Jacobsson, R., Jaeger, A., Jahjah Hussein, M., Jans, E., Jansen, F., Jaton, P., Jean-Marie, B., Jing, F., John, M., Johnson, D., Jones, C., Jost, B., Kaballo, M., Kandybei, S., Karacson, M., Karbach, T., Keaveney, J., Kenyon, I., Kerzel, U., Ketel, T., Keune, A., Khanji, B., Kim, Y., Knecht, M., Koopman, R., Koppenburg, P., Kozlinskiy, A., Kravchuk, L., Kreplin, K., Kreps, M., Krocker, G., Krokovny, P., Kruse, F., Kruzelecki, K., Kucharczyk, M., Kvaratskheliya, T., La Thi, V., Lacarrere, D., Lafferty, G., Lai, A., Lambert, D., Lambert, R., Lanciotti, E., Lanfranchi, G., Langenbruch, C., Latham, T., Lazzeroni, C., Le Gac, R., van Leerdam, J., Lees, J.-P., Lefèvre, R., Leflat, A., Lefrançois, J., Leroy, O., Lesiak, T., Li, L., Li Gioi, L., Lieng, M., Liles, M., Lindner, R., Linn, C., Liu, B., Liu, G., von Loeben, J., Lopes, J., Lopez Asamar, E., Lopez-March, N., Lu, H., Luisier, J., MacRaighne, A., Machefert, F., Machikhiliyan, I., Maciuc, F., Maev, O., Magnin, J., Malde, S., Mamunur, R., Manca, G., Mancinelli, G., Mangiafave, N., Marconi, U., Märki, R., Marks, J., Martellotti, G., Martens, A., Martin, L., Martín Sánchez, A., Martinez Santos, D., Massafferri, A., Mathe, Z., Matteuzzi, C., Matveev, M., Maurice, E., Maynard, B., Mazurov, A., McGregor, G., McNulty, R., Meissner, M., Merk, M., Merkel, J., Messi, R., Miglioranzi, S., Milanes, D., Minard, M.-N., Molina Rodriguez, J., Monteil, S., Moran, D., Morawski, P., Mountain, R., Mous, I., Muheim, F., Müller, K., Muresan, R., Muryn, B., Muster, B., Musy, M., Mylroie-Smith, J., Naik, P., Nakada, T., Nandakumar, R., Nasteva, I., Nedos, M., Needham, M., Neufeld, N., Nguyen-Mau, C., Nicol, M., Niess, V., Nikitin, N., Nomerotski, A., Novoselov, A., Oblakowska-Mucha, A., Obraztsov, V., Oggero, S., Ogilvy, S., Okhrimenko, O., Oldeman, R., Orlandea, M., Otalora Goicochea, J., Owen, P., Pal, K., Palacios, J., Palano, A., Palutan, M., Panman, J., Papanestis, A., Pappagallo, M., Parkes, C., Parkinson, C., Passaleva, G., Patel, G., Patel, M., Paterson, S., Patrick, G., Patrignani, C., Pavel-Nicorescu, C., Pazos Alvarez, A., Pellegrino, A., Penso, G., Pepe Altarelli, M., Perazzini, S., Perego, D., Perez Trigo, E., Pérez-Calero Yzquierdo, A., Perret, P., Perrin-Terrin, M., Pessina, G., Petrella, A., Petrolini, A., Phan, A., Picatoste Olloqui, E., Pie Valls, B., Pietrzyk, B., Pilař, T., Pinci, D., Plackett, R., Playfer, S., Plo Casasus, M., Polok, G., Poluektov, A., Polycarpo, E., Popov, D., Popovici, B., Potterat, C., Powell, A., Prisciandaro, J., Pugatch, V., Navarro, A., Qian, W., Rademacker, J., Rakotomiaramanana, B., Rangel, M., Raniuk, I., Raven, G., Redford, S., Reid, M., dos Reis, A., Ricciardi, S., Rinnert, K., Roa Romero, D., Robbe, P., Rodrigues, E., Rodrigues, F., Rodriguez Perez, P., Rogers, G., Roiser, S., Romanovsky, V., Rosello, M., Rouvinet, J., Ruf, T., Ruiz, H., Sabatino, G., Saborido Silva, J., Sagidova, N., Sail, P., Saitta, B., Salzmann, C., Sannino, M., Santacesaria, R., Santamarina Rios, C., Santinelli, R., Santovetti, E., Sapunov, M., Sarti, A., Satriano, C., Satta, A., Savrie, M., Savrina, D., Schaack, P., Schiller, M., Schleich, S., Schlupp, M., Schmelling, M., Schmidt, B., Schneider, O., Schopper, A., Schune, M.-H., Schwemmer, R., Sciascia, B., Sciubba, A., Seco, M., Semennikov, A., Senderowska, K., Sepp, I., Serra, N., Serrano, J., Seyfert, P., Shapkin, M., Shapoval, I., Shatalov, P., Shcheglov, Y., Shears, T., Shekhtman, L., Shevchenko, O., Shevchenko, V., Shires, A., Silva Coutinho, R., Skwarnicki, T., Smith, A., Smith, N., Smith, E., Sobczak, K., Soler, F.J.P., Solomin, A., Soomro, F., Souza De Paula, B., Spaan, B., Sparkes, A., Spradlin, P., Stagni, F., Stahl, S., Steinkamp, O., Stoica, S., Stone, S., Storaci, B., Straticiuc, M., Straumann, U., Subbiah, V., Swientek, S., Szczekowski, M., Szczypka, P., Szumlak, T., T’Jampens, S., Teodorescu, E., Teubert, F., Thomas, C., Thomas, E., van Tilburg, J., Tisserand, V., Tobin, M., Topp-Joergensen, S., Torr, N., Tournefier, E., Tran, M., Tsaregorodtsev, A., Tuning, N., Ubeda Garcia, M., Ukleja, A., Urquijo, P., Uwer, U., Vagnoni, V., Valenti, G., Vazquez Gomez, R., Vazquez Regueiro, P., Vecchi, S., Velthuis, J., Veltri, M., Viaud, B., Videau, I., Vilasis-Cardona, X., Visniakov, J., Vollhardt, A., Volyanskyy, D., Voong, D., Vorobyev, A., Voss, H., Wandernoth, S., Wang, J., Ward, D., Watson, N., Webber, A., Websdale, D., Whitehead, M., Wiedner, D., Wiggers, L., Wilkinson, G., Williams, M., Williams, M., Wilson, F., Wishahi, J., Witek, M., Witzeling, W., Wotton, S., Wyllie, K., Xie, Y., Xing, F., Xing, Z., Yang, Z., Young, R., Yushchenko, O., Zavertyaev, M., Zhang, F., Zhang, L., Zhang, W., Zhang, Y., Zhelezov, A., Zhong, L., Zverev, E., and Zvyagin, A.
• College/School: College of Science and Engineering > School of Physics and Astronomy
• Journal Name: Physical Review Letters
• Publisher: American Physical Society
• ISSN: 0031-9007
• ISSN (Online): 1079-7114
• Published Online: 12 March 2012
• Copyright Holders: Copyright © 2012 CERN, for the LHCb Collaboration
• First Published: First published in Physical Review Letters 108(11): 111602
• Publisher Policy: Reproduced under a Creative Commons license

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