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  Observation of the Λ0b → J/ψpπ- decay

LHCb Collaboration, Aaij, R., Adeva, B., Adinolfi, M., Affolder, A., Ajaltouni, Z., et al. (2014). Observation of the Λ0b → J/ψpπ- decay. Journal of high energy physics: JHEP, 2014(7): 103. doi:10.1007/JHEP07(2014)103.

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LHCb Collaboration, Author              
Aaij, R., Author
Adeva, B., Author
Adinolfi, M., Author
Affolder, A., Author
Ajaltouni, Z., Author
Akar, S., 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., AuthorAndreotti, M., AuthorAndrews, J. E., AuthorAppleby, R. B., AuthorGutierrez, O. Aquines, AuthorArchilli, F., AuthorArtamonov, A., AuthorArtuso, M., AuthorAslanides, E., AuthorAuriemma, G., AuthorBaalouch, M., AuthorBăbeanu, A., AuthorBachmann, S., AuthorBack, J. J., AuthorBadalov, A., AuthorBalagura, V., AuthorBaldini, W., AuthorBarlow, R. J., AuthorBarschel, C., AuthorBarsuk, S., AuthorBarter, W., AuthorBatozskaya, V., AuthorBattista, V., 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., AuthorDreimanis, K., 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, H. -M., AuthorEvans, T., AuthorFalabella, A., AuthorFärber, C., AuthorFarinelli, C., AuthorFarley, N., AuthorFarry, S., AuthorFay, RF, 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., AuthorGavrilov, G., 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., 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., AuthorKarodia, S., 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., AuthorKucewicz, W., 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., 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., 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., AuthorO'Hanlon, D. P., 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., AuthorPrice, E., 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, S., 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., AuthorSaunders, D. M., 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., 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., AuthorSpradlin, P., AuthorStagni, F., AuthorStahl, M., 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, 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: The first observation of the Cabibbo-suppressed decay $\Lambda_b^0\rightarrow J/\psi p \pi^-$ is reported using a data sample of proton-proton collisions at 7 and 8 TeV, corresponding to an integrated luminosity of 3 $\rm fb^{-1}$. A prominent signal is observed and the branching fraction relative to the decay mode $\Lambda_b^0\rightarrow J/\psi p K^-$ is determined to be $$ \frac{{\cal B}(\Lambda_b^0\rightarrow J/\psi p \pi^-)}{{\cal B}(\Lambda_b^0\rightarrow J/\psi p K^-)}=0.0824\pm0.0025\:(\text{stat})\pm0.0042\:(\text{syst}). $$ A search for direct CP violation is performed. The difference in the CP asymmetries between these two decays is found to be $$ {\cal A}_{CP}(\Lambda_b^0\rightarrow J/\psi p \pi^-)-{\cal A}_{CP}(\Lambda_b^0\rightarrow J/\psi p K^-)=(+5.7\pm 2.4\:(\text{stat})\pm1.2\:(\text{syst}))\%, $$ which is compatible with CP symmetry at the $2.2\sigma$ level.

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 Dates: 2014-07-22
 Publication Status: Published online
 Pages: -
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 Rev. Type: -
 Identifiers: arXiv: 1406.0755
DOI: 10.1007/JHEP07(2014)103
URI: http://arxiv.org/abs/1406.0755
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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 (7) Sequence Number: 103 Start / End Page: - Identifier: ISSN: 1126-6708
CoNE: https://pure.mpg.de/cone/journals/resource/111021927548002