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  Observation of eta(c)(2S) -> p(p)over-bar and search for X(3872) -> p(p)over-bar decays

Aaij, R., Adeva, B., Adinolfi, M., Ajaltouni, Z., Akar, S., Albrecht, J., et al. (2017). Observation of eta(c)(2S) -> p(p)over-bar and search for X(3872) -> p(p)over-bar decays. Physics Letters B, 769, 305-313. doi:10.1016/j.physletb.2017.03.046.

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Aaij, R.1, Author
Adeva, B.1, Author
Adinolfi, M.1, Author
Ajaltouni, Z.1, Author
Akar, S.1, Author
Albrecht, J.1, Author
Alessio, F.1, Author
Alexander, M.1, Author
Ali, S.1, Author
Alkhazov, G.1, Author
Cartelle, P. Alvarez1, Author
Alves Jr., A. A.1, Author
Amato, S.1, Author
Amerio, S.1, Author
Amhis, Y.1, Author
An, L.1, Author
Anderlini, L.1, Author
Andreassi, G.1, Author
Andreotti, M.1, Author
Andrews, J. E.1, Author
Appleby, R. B.1, AuthorGutierrez, . Aquines1, AuthorArchilli, F.1, Authord'Argent, P.1, AuthorRomeu, J. Arnau1, AuthorArtamonov, A.1, AuthorArtuso, M.1, AuthorAslanides, E.1, AuthorAuriemma, G.1, AuthorBaalouch, M.1, AuthorBabuschkin, I.1, AuthorBachmann, S.1, AuthorBack, J. J.1, AuthorBadalov, A.1, AuthorBaesso, C.1, AuthorBaldini, W.1, AuthorBarlow, R. J.1, AuthorBarschel, C.1, AuthorBarsuk, S.1, AuthorBarter, W.1, AuthorBatozskaya, V.1, AuthorBatsukh, B.1, AuthorBattista, V.1, AuthorBay, A.1, AuthorBeaucourt, L.1, AuthorBeddow, J.1, AuthorBedeschi, F.1, AuthorBediaga, I.1, AuthorBel, L. J.1, AuthorBellee, V.1, AuthorBelloli, N.1, AuthorBelous, K.1, AuthorBelyaev, I.1, AuthorBen-Haim, E.1, AuthorBencivenni, G.1, AuthorBenson, S.1, AuthorBenton, J.1, AuthorBerezhnoy, A.1, AuthorBernet, R.1, AuthorBertolin, A.1, AuthorBetti, F.1, AuthorBettler, M. -O.1, Authorvan Beuzekom, M.1, AuthorBifani, S.1, AuthorBilloir, P.1, AuthorBird, T.1, AuthorBirnkrautl, A.1, AuthorBitadze, A.1, AuthorBizzeti, A.1, AuthorBlake, T.1, AuthorBlanc, F.1, AuthorBlouw, J.1, AuthorBlusk, S.1, AuthorBocci, V.1, AuthorBoettcher, T.1, AuthorBondar, A.1, AuthorBondar, N.1, AuthorBonivento, W.1, AuthorBorgheresi, A.1, AuthorBorghi, S.1, AuthorBorisyak, M.1, AuthorBorsato, M.1, AuthorBossu, F.1, AuthorBoubdir, M.1, AuthorBowcock, T. J. V.1, AuthorBowen, E.1, AuthorBozzi, C.1, AuthorBraun, S.1, AuthorBritsch, M.1, AuthorBritton, T.1, AuthorBrodzicka, J.1, AuthorBuchanan, E.1, AuthorBurr, C.1, AuthorBursche, A.1, AuthorBuytaert, J.1, AuthorCadeddu, S.1, AuthorCalabrese, R.1, AuthorCalvi, M.1, AuthorGomez, M. Calvo1, AuthorCampana, P.1, AuthorPerez, D. Campora1, AuthorCapriotti, L.1, AuthorCarbone, A.1, AuthorCarboni, G.1, AuthorCardinale, R.1, AuthorCardini, A.1, AuthorCarniti, P.1, AuthorCarson, L.1, AuthorAkiba, K. Carvalho1, AuthorCasse, G.1, AuthorCassina, L.1, AuthorGarcia, L. Castillo1, AuthorCattaneo, M.1, AuthorCauet, Ch.1, AuthorCavallero, G.1, AuthorCenci, R.1, AuthorCharles, M.1, AuthorCharpentier, Ph.1, AuthorChatzikonstantinidis, G.1, AuthorChefdeville, M.1, AuthorChen, S.1, AuthorCheung, S. -F.1, AuthorChobanova, V.1, AuthorChrzaszcz, M.1, AuthorVidal, X. Cid1, AuthorCiezarek, G.1, AuthorClarke, P. E. L.1, AuthorClemencic, M.1, AuthorCliff, H. V.1, AuthorClosier, J.1, AuthorCoco, V.1, AuthorCogan, J.1, AuthorCogneras, E.1, AuthorCogoni, V.1, AuthorCojocariu, L.1, AuthorCollazuol, G.1, AuthorCollins, P.1, AuthorComerma-Montells, A.1, AuthorContu, A.1, AuthorCook, A.1, AuthorCoquereau, S.1, AuthorCorti, G.1, AuthorCorvo, M.1, AuthorSobral, C. M. Costa1, AuthorCouturier, B.1, AuthorCowan, G. A.1, AuthorCraik, D. C.1, AuthorCrocombe, A.1, AuthorTorres, M. Cruz1, AuthorCunliffe, S.1, AuthorCurrie, R.1, AuthorD'Ambrosio, C.1, AuthorDall'Occo, E.1, AuthorDalseno, J.1, AuthorDavid, P. N. Y.1, AuthorDavis, A.1, AuthorFrancisco, O. De Aguiar1, AuthorDe Bruyn, K.1, AuthorDe Capua, S.1, AuthorDe Cian, M.1, AuthorDe Miranda, J. M.1, AuthorDe Paula, L.1, AuthorDe Simone, P.1, AuthorDean, C. -T.1, AuthorDecamp, D.1, AuthorDeckenhoff, M.1, AuthorDel Buono, L.1, AuthorDemmer, M.1, AuthorDerkach, D.1, AuthorDeschamps, O.1, AuthorDettori, F.1, AuthorDey, B.1, AuthorDi Canto, A.1, AuthorDijkstra, H.1, AuthorDordei, F.1, AuthorDorigo, M.1, AuthorSuarez, A. Dosil1, AuthorDovbnya, A.1, AuthorDreimanis, K.1, AuthorDufour, L.1, AuthorDujany, G.1, AuthorDungs, K.1, AuthorDurante, P.1, AuthorDzhelyadin, R.1, AuthorDziurda, A.1, AuthorDzyuba, A.1, AuthorDeleage, N.1, AuthorEaso, S.1, AuthorEgede, U.1, AuthorEgorychev, V.1, AuthorEidelman, S.1, AuthorEisenhardt, S.1, AuthorEitschberger, U.1, AuthorEkelhof, R.1, AuthorEklund, L.1, AuthorElsasser, Ch.1, AuthorEly, S.1, AuthorEsen, S.1, AuthorEvans, H. M.1, AuthorEvans, T.1, AuthorFalabella, A.1, AuthorFarley, N.1, AuthorFarry, S.1, AuthorFay, R.1, AuthorFazzini, D.1, AuthorFerguson, D.1, AuthorAlbor, V. Fernandez1, AuthorFerrari, F.1, AuthorRodrigues, F. Ferreira1, AuthorFerro-Luzzi, M.1, AuthorFilippov, S.1, AuthorFiore, M.1, AuthorFiorini, M.1, AuthorFirlej, M.1, AuthorFitzpatrick, C.1, AuthorFiutowski, T.1, AuthorFleuret, F.1, AuthorFohl, K.1, AuthorFontana, M.1, AuthorFontanelli, F.1, AuthorForshaw, D. C.1, AuthorForty, R.1, AuthorLima, V. Franco1, AuthorFrank, M.1, AuthorFrei, C.1, AuthorFu, J.1, AuthorFurfaro, E.1, AuthorFarber, C.1, AuthorTorreira, A. Gallas1, AuthorGalli, D.1, AuthorGallorini, S.1, AuthorGambetta, S.1, AuthorGandelman, M.1, AuthorGandini, P.1, AuthorGao, Y.1, AuthorPardinas, J. Garcia1, AuthorTico, J. Garra1, AuthorGarrido, L.1, AuthorGarsed, P. J.1, AuthorGascon, D.1, AuthorGaspar, C.1, AuthorGavardi, L.1, AuthorGazzoni, G.1, AuthorGerick, D.1, AuthorGersabeck, E.1, AuthorGersabeck, M.1, AuthorGershon, T.1, AuthorGhez, Ph.1, AuthorGiani, S.1, AuthorGibson, V.1, AuthorGirard, O. G.1, AuthorGiubega, L.1, AuthorGizdov, K.1, AuthorGligorov, V. V.1, AuthorGolubkov, D.1, AuthorGolutvin, A.1, AuthorGomes, A.1, AuthorGorelov, I. V.1, AuthorGottii, C.1, AuthorGandara, M. Grabalosa1, AuthorDiaz, R. Graciani1, AuthorCardoso, L. A. Granado1, AuthorGrauges, E.1, AuthorGraverini, E.1, AuthorGraziani, G.1, AuthorGrecu, A.1, AuthorGriffith, P.1, AuthorGrillo, L.1, AuthorCazon, B. R. Gruberg1, AuthorGrunberg, O.1, AuthorGushchin, E.1, AuthorGuz, Yu.1, AuthorGys, T.1, AuthorGobel, C.1, AuthorHadavizadeh, T.1, AuthorHadjivasiliou, C.1, AuthorHaefeli, G.1, AuthorHaen, C.1, AuthorHaines, S. C.1, AuthorHall, S.1, AuthorHamilton, B.1, AuthorHan, X.1, AuthorHansmann-Menzemer, S.1, AuthorHarnew, N.1, AuthorHarnew, S. T.1, AuthorHarrison, J.1, AuthorHatch, M.1, AuthorHe, J.1, AuthorHead, T.1, AuthorHeister, A.1, AuthorHennessy, K.1, AuthorHenrard, P.1, AuthorHenry, L.1, AuthorMorata, J. A. Hernando1, Authorvan Herwijnen, E.1, AuthorHess, M.1, AuthorHicheur, A.1, AuthorHill, D.1, AuthorHombach, C.1, AuthorHulsbergen, W.1, AuthorHumair, T.1, AuthorHushchyn, M.1, AuthorHussain, N.1, AuthorHutchcroft, D.1, AuthorIdzik, M.1, AuthorIlten, P.1, AuthorJacobsson, R.1, AuthorJaeger, A.1, AuthorJalocha, J.1, AuthorJans, E.1, AuthorJawahery, A.1, AuthorJohn, M.1, AuthorJohnson, D.1, AuthorJones, C. R.1, AuthorForam, C.1, AuthorJost, B.1, AuthorJurik, N.1, AuthorKandybei, S.1, AuthorKanso, W.1, AuthorKaracson, M.1, AuthorKariuki, J. M.1, AuthorKarodia, S.1, AuthorKecke, M.1, AuthorKelsey, M.1, AuthorKenyon, I. R.1, AuthorKenzie, M.1, AuthorKetel, T.1, AuthorKhairullin, E.1, AuthorKhanji, B.1, AuthorKhurewathanakul, C.1, AuthorKim, '.1, AuthorKlaver, S.1, AuthorKlimaszewski, K.1, AuthorKoliiev, S.1, AuthorKolpin, M.1, AuthorKomarov, I.1, AuthorKoopman, R. F.1, AuthorKoppenburg, P.1, AuthorKozachuk, A.1, AuthorKozeiha, M.1, AuthorKravchuk, L.1, AuthorKreplin, K.1, AuthorKreps, M.1, AuthorKrokovny, P.1, AuthorKruse, F.1, AuthorKrzemien, W.1, AuthorKucewicz, W.1, AuthorKucharczyk, M.1, AuthorKudryavtsev, V.1, AuthorKuonen, A. K.1, AuthorKurek, K.1, AuthorKvaratskheliya, T.1, AuthorLacarrere, D.1, AuthorLafferty, G.1, AuthorLai, A.1, AuthorLambert, D.1, AuthorLanfranchi, G.1, AuthorLangenbruch, C.1, AuthorLanghans, B.1, AuthorLatham, T.1, AuthorLazzeroni, C.1, AuthorLe Gac, R.1, Authorvan Leerdam, J.1, AuthorLees, J. -P.1, AuthorLeflat, A.1, AuthorLefrancois, J.1, AuthorLefevre, R.1, AuthorLemaitre, F.1, AuthorCid, E. Lemos1, AuthorLeroy, O.1, AuthorLesiak, T.1, AuthorLeverington, B.1, AuthorLi, Y.1, AuthorLikhomanenko, T.1, AuthorLindner, R.1, AuthorLinn, C.1, AuthorLionetto, F.1, AuthorLiu, B.1, AuthorLiu, X.1, AuthorLoh, D.1, AuthorLongstaff, I.1, AuthorLopes, J. H.1, AuthorLucchesi, D.1, AuthorMartinez, M. Lucio1, AuthorLuo, H.1, AuthorLupato, A.1, AuthorLuppi, E.1, AuthorLupton, O.1, AuthorLusiani, A.1, AuthorLyu, X.1, AuthorMachefert, F.1, AuthorMaciuc, F.1, AuthorMaev, O.1, AuthorMaguire, K.1, AuthorMalde, S.1, AuthorMalinin, A.1, AuthorMaltsev, T.1, AuthorManca, G.1, AuthorMancinelli, G.1, AuthorManning, P.1, AuthorMaratas, J.1, AuthorMarchand, J. F.1, AuthorMarconi, U.1, AuthorBenito, C. Marin1, AuthorMarino, P.1, AuthorMarks, J.1, AuthorMartellotti, G.1, AuthorMartin, M.1, AuthorMartinelli, M.1, AuthorSantos, D. Martinez1, AuthorVidal, F. Martinez1, AuthorTostes, D. Martins1, AuthorMassacrier, L. M.1, AuthorMassafferri, A.1, AuthorMatev, R.1, AuthorMathad, A.1, AuthorMathe, Z.1, AuthorMatteuzzi, C.1, AuthorMauri, A.1, AuthorMaurin, B.1, AuthorMazurov, A.1, AuthorMcCann, M.1, AuthorMcCarthy, J.1, AuthorMcNab, A.1, AuthorMcNulty, R.1, AuthorMeadows, B.1, AuthorMeier, E.1, AuthorMeissner, M.1, AuthorMelnychuk, D.1, AuthorMerk, M.1, AuthorMerli, A.1, AuthorMichielin, E.1, AuthorMilanes, D. A.1, AuthorMinard, M. -N.1, AuthorMitzel, D. S.1, AuthorRodriguez, J. Molina1, AuthorMonroy, I. A.1, AuthorMonteil, S.1, AuthorMorandin, M.1, AuthorMorawski, P.1, AuthorMorda, A.1, AuthorMorello, M. J.1, AuthorMoron, J.1, AuthorMorris, A. B.1, AuthorMountain, R.1, AuthorMuheim, F.1, AuthorMulder, M.1, AuthorMussini, M.1, AuthorMuller, D.1, AuthorMuller, J.1, AuthorMuller, K.1, AuthorMuller, V.1, AuthorNaik, P.1, AuthorNakada, T.1, AuthorNandakumar, R.1, AuthorNandi, A.1, AuthorNasteva, I.1, AuthorNeedham, M.1, AuthorNeri, N.1, AuthorNeubert, S.1, AuthorNeufeld, N.1, AuthorNeuner, M.1, AuthorNguyen, A. D.1, AuthorNguyen-Mau, C.1, AuthorNieswand, S.1, AuthorNiet, R.1, AuthorNikitin, N.1, AuthorNikodem, T.1, AuthorNovoselov, A.1, AuthorO'Hanlon, D. P.1, AuthorOblakowska-Mucha, A.1, AuthorObraztsov, V.1, AuthorOgilvy, S.1, AuthorOldeman, R.1, AuthorOnderwater, C. J. G.1, AuthorGoicochea, J. M. Otalora1, AuthorOtto, A.1, AuthorOwen, P.1, AuthorOyanguren, A.1, AuthorPais, P. R.1, AuthorPalano, A.1, AuthorPalombo, F.1, AuthorPalutan, M.1, AuthorPanman, J.1, AuthorPapanestis, A.1, AuthorPappagallo, M.1, AuthorPappalardo, L. L.1, AuthorPappenheimer, C.1, AuthorParker, W.1, AuthorParkes, C.1, AuthorPassaleva, G.1, AuthorPatel, G. D.1, AuthorPatel, M.1, AuthorPatrignani, C.1, AuthorPearce, A.1, AuthorPellegrino, A.1, AuthorPenso, G.1, AuthorAltarelli, M. Pepe1, AuthorPerazzini, S.1, AuthorPerret, P.1, AuthorPescatore, L.1, AuthorPetridis, K.1, AuthorPetrolini, A.1, AuthorPetrov, A.1, AuthorPetruzzo, M.1, AuthorOlloqui, E. Picatoste1, AuthorPietrzyk, B.1, AuthorPikies, M.1, AuthorPinci, D.1, AuthorPistone, A.1, AuthorPiucci, A.1, AuthorPlayfer, S.1, AuthorCasasus, M. Plo1, AuthorPoikela, T.1, AuthorPolci, F.1, AuthorPoluektov, A.1, AuthorPolyakov, I.1, AuthorPolycarpo, E.1, AuthorPomery, G. J.1, AuthorPopov, A.1, AuthorPopov, D.1, AuthorPopovici, B.1, AuthorPotterat, C.1, AuthorPrice, E.1, AuthorPrice, J. D.1, AuthorPrisciandaro, J.1, AuthorPritchard, A.1, AuthorProuve, C.1, AuthorPugatch, V.1, AuthorNavarro, A. Puig1, AuthorPunzi, G.1, AuthorQian, W.1, AuthorQuagliani, R.1, AuthorRachwal, B.1, AuthorRademacker, J. H.1, AuthorRama, M.1, AuthorPernas, M. Ramos1, AuthorRangel, M. S.1, AuthorRaniuk, I.1, AuthorRaven, G.1, AuthorRedi, F.1, AuthorReichert, S.1, Authordos Reis, A. C.1, AuthorAlepuz, C. Remon1, AuthorRenaudin, V.1, AuthorRicciardi, S.1, AuthorRichards, S.1, AuthorRihl, M.1, AuthorRinnert, K.1, AuthorMolina, V. Rives1, AuthorRobbe, P.1, AuthorRodrigues, A. B.1, AuthorRodrigues, E.1, AuthorLopez, J. A. Rodriguez1, AuthorPerez, P. Rodriguez1, AuthorRogozhnikov, A.1, AuthorRoiser, S.1, AuthorRomanovskiy, V.1, AuthorVidal, A. Romero1, AuthorRonayne, J. W.1, AuthorRotondo, M.1, AuthorRudolph, M. S.1, AuthorRuf, T.1, AuthorValls, P. Ruiz1, AuthorSilva, I. T. J. Saborido1, AuthorSadykhov, E.1, AuthorSagidova, N.1, AuthorSaitta, B.1, AuthorGuimaraes, V. Salustino1, AuthorMayordomo, C. Sanchez1, AuthorSedes, B. Sanmartin1, AuthorSantacesaria, R.1, AuthorRios, C. 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K.1, AuthorWebsdale, D.1, AuthorWeiden, A.1, AuthorWhitehead, M.1, AuthorWicht, J.1, AuthorWilkinson, G.1, AuthorWilkinson, M.1, AuthorWilliams, M.1, AuthorWilliams, M. P.1, AuthorWilliams, M.1, AuthorWilliams, T.1, AuthorWilson, F. F.1, AuthorWimberley, J.1, AuthorWinn, M.1, AuthorWishahi, J.1, AuthorWislicki, W.1, AuthorWitek, M.1, AuthorWormser, G.1, AuthorWotton, S. A.1, AuthorWraight, K.1, AuthorWright, S.1, AuthorWyllie, K.1, AuthorXie, Y.1, AuthorXing, Z.1, AuthorXu, Z.1, AuthorYang, Z.1, AuthorYin, H.1, AuthorYu, J.1, AuthorYuan, X.1, AuthorYushchenko, O.1, AuthorZangoli, M.1, AuthorZarebski, K. A.1, AuthorZavertyaev, M.1, AuthorZhang, L.1, AuthorZhang, Y.1, AuthorZhang, Y.1, AuthorZhelezov, A.1, AuthorZheng, Y.1, AuthorZhokhov, A.1, AuthorZhukov, V.1, AuthorZucchelli, S.1, Author more..
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2Division Prof. Dr. Werner Hofmann, MPI for Nuclear Physics, Max Planck Society, ou_904550              

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 MPINP: LHCb - Abteilung Hofmann
 Abstract: The first observation of the decay eta(c)(2S) -> p (p) over bar is reported using proton -proton collision data corresponding to an integrated luminosity of 3.0 fb(-1) recorded by the LHCb experiment at centre -of -mass energies of 7 and 8 TeV. The eta c(2S) resonance is produced in the decay B+ [c (c) over bar ]K+. The product of branching fractions normalised to that for the intermediate state, R-eta c,(2s), is measured to be R-eta c,(2s) equivalent to B(B+-> eta c (2S)K+) x B(eta c(2s)(2S) -> p<<(p)over bar> )/B(B+ -> J/psi k(+)) x B(J/psi -> p<<(p)over bar> ) = (1.58 +/- 0.33 +/- 0.09) x 10(-2), where the first uncertainty is statistical and the second systematic. No signals for the decays B+ -> X(3872)(-> p (p) over bar )K+ and B+ psi(3770)(-> p (p) over bar )K+ are seen, and the 95% confidence level upper limits on their relative branching ratios are found to be R-x(3872) < 0.25 x 10(-2) and R-psi(3770) < 0.10. In addition, the mass differences between the nc(1S) and the J/psi states, between the eta(c)(2S) and the eta(c)(2S) states, and the natural width of the psi(1S) are measured as M-J/psi - M-eta c(7s)= 110.2 +/- 0.5 +/- 0.9 MeV, M psi(2S) - M-eta c (2S) = 52.5 +/- 1.7 +/- 0.6 MeV, Gamma(eta c) (1s) = 34.0 +/- 1.9 +/- 1.3 MeV. (C) 2017 Published by Elsevier B.V.

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 Dates: 2017
 Publication Status: Issued
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 Identifiers: DOI: 10.1016/j.physletb.2017.03.046
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Title: Physics Letters B
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Publ. Info: North-Holland
Pages: - Volume / Issue: 769 Sequence Number: - Start / End Page: 305 - 313 Identifier: ISSN: 0370-2693
CoNE: https://pure.mpg.de/cone/journals/resource/954925524777