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  Measurement of CP asymmetry in D0 → K+K- and D0 → π+π- decays

LHCb Collaboration, Aaij, R., Adeva, B., Adinolfi, M., Affolder, A., Ajaltouni, Z., et al. (2014). Measurement of CP asymmetry in D0 → K+K- and D0 → π+π- decays. Journal of high energy physics: JHEP, 2014(07): 041. doi:10.1007/JHEP07(2014)041.

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LHCb Collaboration, Author              
Aaij, R., Author
Adeva, B., Author
Adinolfi, M., Author
Affolder, A., Author
Ajaltouni, Z., Author
Albrecht, J., Author
Alessio, F., Author
Alexander, M., Author
Ali, S., Author
Alkhazov, G., Author
Cartelle, P. Alvarez, Author
Alves, A. A., Author
Amato, S., Author
Amerio, S., Author
Amhis, Y., Author
An, L., Author
Anderlini, L., Author
Anderson, J., Author
Andreassen, R., Author
Andreotti, M., AuthorAndrews, J. E., AuthorAppleby, R. B., AuthorGutierrez, O. Aquines, AuthorArchilli, F., AuthorArtamonov, A., AuthorArtuso, M., AuthorAslanides, E., AuthorAuriemma, G., AuthorBaalouch, M., AuthorBachmann, S., AuthorBack, J. J., AuthorBadalov, A., AuthorBalagura, V., AuthorBaldini, W., AuthorBarlow, R. J., AuthorBarschel, C., AuthorBarsuk, S., AuthorBarter, W., AuthorBatozskaya, V., AuthorBauer, Th., AuthorBay, A., AuthorBeaucourt, L., AuthorBeddow, J., AuthorBedeschi, F., AuthorBediaga, I., AuthorBelogurov, S., AuthorBelous, K., AuthorBelyaev, I., AuthorBen-Haim, E., AuthorBencivenni, G., AuthorBenson, S., AuthorBenton, J., AuthorBerezhnoy, A., AuthorBernet, R., AuthorBettler, M. -O., Authorvan Beuzekom, M., AuthorBien, A., AuthorBifani, S., AuthorBird, T., AuthorBizzeti, A., AuthorBjørnstad, P. M., AuthorBlake, T., AuthorBlanc, F., AuthorBlouw, J.1, Author           Blusk, S., AuthorBocci, V., AuthorBondar, A., AuthorBondar, N., AuthorBonivento, W., AuthorBorghi, S., AuthorBorgia, A., AuthorBorsato, M., AuthorBowcock, T. J. V., AuthorBowen, E., AuthorBozzi, C., AuthorBrambach, T., AuthorBrand, J. van den, AuthorBressieux, J., AuthorBrett, D., AuthorBritsch, M.1, Author           Britton, T., AuthorBrodzicka, J., AuthorBrook, N. H., AuthorBrown, H., AuthorBursche, A., AuthorBusetto, G., AuthorBuytaert, J., AuthorCadeddu, S., AuthorCalabrese, R., AuthorCalvi, M., AuthorGomez, M. Calvo, AuthorCamboni, A., AuthorCampana, P., AuthorPerez, D. Campora, AuthorCarbone, A., AuthorCarboni, G., AuthorCardinale, R., AuthorCardini, A., AuthorCarranza-Mejia, H., AuthorCarson, L., AuthorAkiba, K. Carvalho, AuthorCasse, G., AuthorCassina, L., AuthorGarcia, L. Castillo, AuthorCattaneo, M., AuthorCauet, Ch., AuthorCenci, R., AuthorCharles, M., AuthorCharpentier, Ph., AuthorChen, S., AuthorCheung, S. -F., AuthorChiapolini, N., AuthorChrzaszcz, M., AuthorCiba, K., AuthorVidal, X. Cid, AuthorCiezarek, G., AuthorClarke, P. E. L., AuthorClemencic, M., AuthorCliff, H. V., AuthorClosier, J., AuthorCoco, V., AuthorCogan, J., AuthorCogneras, E., AuthorCollins, P., AuthorComerma-Montells, A., AuthorContu, A., AuthorCook, A., AuthorCoombes, M., AuthorCoquereau, S., AuthorCorti, G., AuthorCorvo, M., AuthorCounts, I., AuthorCouturier, B., AuthorCowan, G. A., AuthorCraik, D. C., AuthorTorres, M. Cruz, AuthorCunliffe, S., AuthorCurrie, R., AuthorD'Ambrosio, C., AuthorDalseno, J., AuthorDavid, P., AuthorDavid, P. N. Y., AuthorDavis, A., AuthorDe Bruyn, K., AuthorDe Capua, S., AuthorDe Cian, M., AuthorDe Miranda, J. M., AuthorDe Paula, L., AuthorDe Silva, W., AuthorDe Simone, P., AuthorDecamp, D., AuthorDeckenhoff, M., AuthorDel Buono, L., AuthorDéléage, N., AuthorDerkach, D., AuthorDeschamps, O., AuthorDettori, F., AuthorDi Canto, A., AuthorDijkstra, H., AuthorDonleavy, S., AuthorDordei, F., AuthorDorigo, M., AuthorSuárez, A. Dosil, AuthorDossett, D., AuthorDovbnya, A., AuthorDujany, G., AuthorDupertuis, F., AuthorDurante, P., AuthorDzhelyadin, R., AuthorDziurda, A., AuthorDzyuba, A., AuthorEaso, S., AuthorEgede, U., AuthorEgorychev, V., AuthorEidelman, S., AuthorEisenhardt, S., AuthorEitschberger, U., AuthorEkelhof, R., AuthorEklund, L., AuthorRifai, I. El, AuthorElsasser, Ch., AuthorEly, S., AuthorEsen, S., AuthorEvans, T., AuthorFalabella, A., AuthorFärber, C., AuthorFarinelli, C., AuthorFarley, N., AuthorFarry, S., AuthorFerguson, D., AuthorAlbor, V. Fernandez, AuthorRodrigues, F. Ferreira, AuthorFerro-Luzzi, M., AuthorFilippov, S., AuthorFiore, M., AuthorFiorini, M., AuthorFirlej, M., AuthorFitzpatrick, C., AuthorFiutowski, T., AuthorFontana, M.1, Author           Fontanelli, F., AuthorForty, R., AuthorFrancisco, O., AuthorFrank, M., AuthorFrei, C., AuthorFrosini, M., AuthorFu, J., AuthorFurfaro, E., AuthorTorreira, A. Gallas, AuthorGalli, D., AuthorGallorini, S., AuthorGambetta, S., AuthorGandelman, M., AuthorGandini, P., AuthorGao, Y., AuthorGarofoli, J., AuthorTico, J. Garra, AuthorGarrido, L., AuthorGaspar, C., AuthorGauld, R., AuthorGavardi, L., AuthorGersabeck, E., AuthorGersabeck, M., AuthorGershon, T., AuthorGhez, Ph., AuthorGianelle, A., AuthorGiani', S., AuthorGibson, V., AuthorGiubega, L., AuthorGligorov, V. V., AuthorGöbel, C., AuthorGolubkov, D., AuthorGolutvin, A., AuthorGomes, A., AuthorGordon, H., AuthorGotti, C., AuthorGándara, M. Grabalosa, AuthorDiaz, R. Graciani, AuthorCardoso, L. A. Granado, AuthorGraugés, E., AuthorGraziani, G., AuthorGrecu, A., AuthorGreening, E., AuthorGregson, S., AuthorGriffith, P., AuthorGrillo, L., AuthorGrünberg, O., AuthorGui, B., AuthorGushchin, E., AuthorGuz, Yu., AuthorGys, T., AuthorHadjivasiliou, C., AuthorHaefeli, G., AuthorHaen, C., AuthorHaines, S. C., AuthorHall, S., AuthorHamilton, B., AuthorHampson, T., AuthorHan, X., AuthorHansmann-Menzemer, S., AuthorHarnew, N., AuthorHarnew, S. T., AuthorHarrison, J., AuthorHartmann, T., AuthorHe, J., AuthorHead, T., AuthorHeijne, V., AuthorHennessy, K., AuthorHenrard, P., AuthorHenry, L., AuthorMorata, J. A. Hernando, Authorvan Herwijnen, E., AuthorHeß, M., AuthorHicheur, A., AuthorHill, D., AuthorHoballah, M., AuthorHombach, C., AuthorHulsbergen, W., AuthorHunt, P., AuthorHussain, N., AuthorHutchcroft, D., AuthorHynds, D., AuthorIdzik, M., AuthorIlten, P., AuthorJacobsson, R., AuthorJaeger, A., AuthorJalocha, J., AuthorJans, E., AuthorJaton, P., AuthorJawahery, A., AuthorJezabek, M., AuthorJing, F., AuthorJohn, M., AuthorJohnson, D., AuthorJones, C. R., AuthorJoram, C., AuthorJost, B., AuthorJurik, N., AuthorKaballo, M., AuthorKandybei, S., AuthorKanso, W., AuthorKaracson, M., AuthorKarbach, T. M., AuthorKelsey, M., AuthorKenyon, I. R., AuthorKetel, T., AuthorKhanji, B., AuthorKhurewathanakul, C., AuthorKlaver, S., AuthorKochebina, O., AuthorKolpin, M., AuthorKomarov, I., AuthorKoopman, R. F., AuthorKoppenburg, P., AuthorKorolev, M., AuthorKozlinskiy, A., AuthorKravchuk, L., AuthorKreplin, K., AuthorKreps, M., AuthorKrocker, G., AuthorKrokovny, P., AuthorKruse, F., AuthorKucharczyk, M., AuthorKudryavtsev, V., AuthorKurek, K., AuthorKvaratskheliya, T., AuthorLa Thi, V. N., AuthorLacarrere, D., AuthorLafferty, G., AuthorLai, A., AuthorLambert, D., AuthorLambert, R. W., AuthorLanciotti, E., AuthorLanfranchi, G., AuthorLangenbruch, C., AuthorLanghans, B., AuthorLatham, T., AuthorLazzeroni, C., AuthorGac, R. Le, Authorvan Leerdam, J., AuthorLees, J. -P., AuthorLefèvre, R., AuthorLeflat, A., AuthorLefrançois, J., AuthorLeo, S., AuthorLeroy, O., AuthorLesiak, T., AuthorLeverington, B., AuthorLi, Y., AuthorLiles, M., AuthorLindner, R., AuthorLinn, C., AuthorLionetto, F., AuthorLiu, B., AuthorLiu, G., AuthorLohn, S., AuthorLongstaff, I., AuthorLopes, J. H., AuthorLopez-March, N., AuthorLowdon, P., AuthorLu, H., AuthorLucchesi, D., AuthorLuo, H., AuthorLupato, A., AuthorLuppi, E., AuthorLupton, O., AuthorMachefert, F., AuthorMachikhiliyan, I. V., AuthorMaciuc, F., AuthorMaev, O., AuthorMalde, S., AuthorManca, G., AuthorMancinelli, G., AuthorManzali, M., AuthorMaratas, J., AuthorMarchand, J. F., AuthorMarconi, U., AuthorBenito, C. Marin, AuthorMarino, P., AuthorMärki, R., AuthorMarks, J., AuthorMartellotti, G., AuthorMartens, A., AuthorSánchez, A. Martín, AuthorMartinelli, M., AuthorSantos, D. Martinez, AuthorVidal, F. Martinez, AuthorTostes, D. Martins, AuthorMassafferri, A., AuthorMatev, R., AuthorMathe, Z., AuthorMatteuzzi, C., AuthorMazurov, A., AuthorMcCann, M., AuthorMcCarthy, J., AuthorMcNab, A., AuthorMcNulty, R., AuthorMcSkelly, B., AuthorMeadows, B., AuthorMeier, F., AuthorMeissner, M., AuthorMerk, M., AuthorMilanes, D. A., AuthorMinard, M. -N., AuthorMoggi, N., AuthorRodriguez, J. Molina, AuthorMonteil, S., AuthorMoran, D., AuthorMorandin, M., AuthorMorawski, P., AuthorMordà, A., AuthorMorello, M. J., AuthorMoron, J., AuthorMorris, A. -B., AuthorMountain, R., AuthorMuheim, F., AuthorMüller, K., AuthorMuresan, R., AuthorMussini, M., AuthorMuster, B., AuthorNaik, P., AuthorNakada, T., AuthorNandakumar, R., AuthorNasteva, I., AuthorNeedham, M., AuthorNeri, N., AuthorNeubert, S., AuthorNeufeld, N., AuthorNeuner, M., AuthorNguyen, A. D., AuthorNguyen, T. D., AuthorNguyen-Mau, C., AuthorNicol, M., AuthorNiess, V., AuthorNiet, R., AuthorNikitin, N., AuthorNikodem, T., AuthorNovoselov, A., AuthorOblakowska-Mucha, A., AuthorObraztsov, V., AuthorOggero, S., AuthorOgilvy, S., AuthorOkhrimenko, O., AuthorOldeman, R., AuthorOnderwater, G., AuthorOrlandea, M., AuthorGoicochea, J. M. Otalora, AuthorOwen, P., AuthorOyanguren, A., AuthorPal, B. K., AuthorPalano, A., AuthorPalombo, F., AuthorPalutan, M., AuthorPanman, J., AuthorPapanestis, A., AuthorPappagallo, M., AuthorParkes, C., AuthorParkinson, C. J., AuthorPassaleva, G., AuthorPatel, G. D., AuthorPatel, M., AuthorPatrignani, C., AuthorAlvarez, A. Pazos, AuthorPearce, A., AuthorPellegrino, A., AuthorAltarelli, M. Pepe, AuthorPerazzini, S., AuthorTrigo, E. Perez, AuthorPerret, P., AuthorPerrin-Terrin, M., AuthorPescatore, L., AuthorPesen, E., AuthorPetridis, K., AuthorPetrolini, A., AuthorOlloqui, E. Picatoste, AuthorPietrzyk, B., AuthorPilař, T., AuthorPinci, D., AuthorPistone, A., AuthorPlayfer, S., AuthorCasasus, M. Plo, AuthorPolci, F., AuthorPoluektov, A., AuthorPolycarpo, E., AuthorPopov, A., AuthorPopov, D.1, Author           Popovici, B., AuthorPotterat, C., AuthorPowell, A., AuthorPrisciandaro, J., AuthorPritchard, A., AuthorProuve, C., AuthorPugatch, V., AuthorNavarro, A. Puig, AuthorPunzi, G., AuthorQian, W., AuthorRachwal, B., AuthorRademacker, J. H., AuthorRakotomiaramanana, B., AuthorRama, M., AuthorRangel, M. S., AuthorRaniuk, I., AuthorRauschmayr, N., AuthorRaven, G., AuthorReichert, S., AuthorReid, M. M., AuthorReis, A. C. dos, AuthorRicciardi, S., AuthorRichards, A., AuthorRihl, M., AuthorRinnert, K., AuthorMolina, V. Rives, AuthorRomero, D. A. Roa, AuthorRobbe, P., AuthorRodrigues, A. B., AuthorRodrigues, E., AuthorPerez, P. Rodriguez, AuthorRoiser, S., AuthorRomanovsky, V., AuthorVidal, A. Romero, AuthorRotondo, M., AuthorRouvinet, J., AuthorRuf, T., AuthorRuffini, F., AuthorRuiz, H., AuthorValls, P. Ruiz, AuthorSabatino, G., AuthorSilva, J. J. Saborido, AuthorSagidova, N., AuthorSail, P., AuthorSaitta, B., AuthorGuimaraes, V. Salustino, AuthorMayordomo, C. Sanchez, AuthorSedes, B. Sanmartin, AuthorSantacesaria, R., AuthorRios, C. Santamarina, AuthorSantovetti, E., AuthorSapunov, M., AuthorSarti, A., AuthorSatriano, C., AuthorSatta, A., AuthorSavrie, M., AuthorSavrina, D., AuthorSchiller, M., AuthorSchindler, H., AuthorSchlupp, M., AuthorSchmelling, M.1, Author           Schmidt, B., AuthorSchneider, O., AuthorSchopper, A., AuthorSchune, M. -H., AuthorSchwemmer, R., AuthorSciascia, B., AuthorSciubba, A., AuthorSeco, M., AuthorSemennikov, A., AuthorSenderowska, K., AuthorSepp, I., AuthorSerra, N., AuthorSerrano, J., AuthorSestini, L., AuthorSeyfert, P., AuthorShapkin, M., AuthorShapoval, I., AuthorShcheglov, Y., AuthorShears, T., AuthorShekhtman, L., AuthorShevchenko, V., AuthorShires, A., AuthorCoutinho, R. Silva, AuthorSimi, G., AuthorSirendi, M., AuthorSkidmore, N., AuthorSkwarnicki, T., AuthorSmith, N. A., AuthorSmith, E., AuthorSmith, E., AuthorSmith, J., AuthorSmith, M., AuthorSnoek, H., AuthorSokoloff, M. D., AuthorSoler, F. J. P., AuthorSoomro, F., AuthorSouza, D., AuthorDe Paula, B. Souza, AuthorSpaan, B., AuthorSparkes, A., AuthorSpinella, F., AuthorSpradlin, P., AuthorStagni, F., AuthorStahl, S., AuthorSteinkamp, O., AuthorStenyakin, O., AuthorStevenson, S., AuthorStoica, S., AuthorStone, S., AuthorStoraci, B., AuthorStracka, S., AuthorStraticiuc, M., AuthorStraumann, U., AuthorStroili, R., AuthorSubbiah, V. K., AuthorSun, L., AuthorSutcliffe, W., AuthorSwientek, K., AuthorSwientek, S., AuthorSyropoulos, V., AuthorSzczekowski, M., AuthorSzczypka, P., AuthorSzilard, D., AuthorSzumlak, T., AuthorT'Jampens, S., AuthorTeklishyn, M., AuthorTellarini, G., AuthorTeubert, F., AuthorThomas, C., AuthorThomas, E., Authorvan Tilburg, J., AuthorTisserand, V., AuthorTobin, M., AuthorTolk, S., AuthorTomassetti, L., AuthorTonelli, D., AuthorTopp-Joergensen, S., AuthorTorr, N., AuthorTournefier, E., AuthorTourneur, S., AuthorTran, M. T., AuthorTresch, M., AuthorTsaregorodtsev, A., AuthorTsopelas, P., AuthorTuning, N., AuthorGarcia, M. Ubeda, AuthorUkleja, A., AuthorUstyuzhanin, A., AuthorUwer, U., AuthorVagnoni, V., AuthorValenti, G., AuthorVallier, A., AuthorGomez, R. Vazquez, AuthorRegueiro, P. Vazquez, AuthorSierra, C. Vázquez, AuthorVecchi, S., AuthorVelthuis, J. J., AuthorVeltri, M., AuthorVeneziano, G., AuthorVesterinen, M., AuthorViaud, B., AuthorVieira, D., AuthorDiaz, M. Vieites, AuthorVilasis-Cardona, X., AuthorVollhardt, A., AuthorVolyanskyy, D.1, Author           Voong, D., AuthorVorobyev, A., AuthorVorobyev, V., AuthorVoß, C., AuthorVoss, H.1, Author           de Vries, J. A., AuthorWaldi, R., AuthorWallace, C., AuthorWallace, R., AuthorWalsh, J., AuthorWandernoth, S., AuthorWang, J., AuthorWard, D. R., AuthorWatson, N. K., AuthorWebsdale, D., AuthorWhitehead, M., AuthorWicht, J., AuthorWiedner, D., AuthorWilkinson, G., AuthorWilliams, M. P., AuthorWilliams, M., AuthorWilson, F. F., AuthorWimberley, J., AuthorWishahi, J., AuthorWislicki, W., AuthorWitek, M., AuthorWormser, G., AuthorWotton, S. A., AuthorWright, S., AuthorWu, S., AuthorWyllie, K., AuthorXie, Y., AuthorXing, Z., AuthorXu, Z., AuthorYang, Z., AuthorYuan, X., AuthorYushchenko, O., AuthorZangoli, M., AuthorZavertyaev, M.1, Author           Zhang, F., AuthorZhang, L., AuthorZhang, W. C., AuthorZhang, Y., AuthorZhelezov, A., AuthorZhokhov, A., AuthorZhong, L., AuthorZvyagin, A., Author more..
Affiliations:
1Division Prof. Dr. Werner Hofmann, MPI for Nuclear Physics, Max Planck Society, ou_904550              

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Free keywords: High Energy Physics - Experiment, hep-ex
 MPINP: LHCb - Abteilung Hofmann
 Abstract: Time-integrated $CP$ asymmetries in $D^0$ decays to the final states $K^- K^+$ and $\pi^- \pi^+$ are measured using proton-proton collisions corresponding to $3\mathrm{\,fb}^{-1}$ of integrated luminosity collected at centre-of-mass energies of $7\mathrm{\,Te\kern -0.1em V}$ and $8\mathrm{\,Te\kern -0.1em V}$. The $D^0$ mesons are produced in semileptonic $b$-hadron decays, where the charge of the accompanying muon is used to determine the initial flavour of the charm meson. The difference in $CP$ asymmetries between the two final states is measured to be \begin{align} \Delta A_{CP} = A_{CP}(K^-K^+)-A_{CP}(\pi^-\pi^+) = (+0.14 \pm 0.16\mathrm{\,(stat)} \pm 0.08\mathrm{\,(syst)})\% \ . \nonumber \end{align} A measurement of $A_{CP}(K^-K^+)$ is obtained assuming negligible $CP$ violation in charm mixing and in Cabibbo-favoured $D$ decays. It is found to be \begin{align} A_{CP}(K^-K^+) = (-0.06 \pm 0.15\mathrm{\,(stat)} \pm 0.10\mathrm{\,(syst)}) \% \ ,\nonumber \end{align} where the correlation coefficient between $\Delta A_{CP}$ and $A_{CP}(K^-K^+)$ is $\rho=0.28$. By combining these results, the $CP$ asymmetry in the $D^0\rightarrow\pi^-\pi^+$ channel is $A_{CP}(\pi^-\pi^+)=(-0.20\pm0.19\mathrm{\,(stat)}\pm0.10\mathrm{\,(syst)})\%$.

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 Dates: 2014-07-09
 Publication Status: Published online
 Pages: 19 pages, 5 figures
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Title: Journal of high energy physics : JHEP
Source Genre: Journal
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Publ. Info: Bologna, Italy : Società italiana di fisica
Pages: - Volume / Issue: 2014 (07) Sequence Number: 041 Start / End Page: - Identifier: ISSN: 1126-6708
CoNE: https://pure.mpg.de/cone/journals/resource/111021927548002