학술논문

Observation of $B^0_{(s)} \to J/\psi p \overline{p}$ decays and precision measurements of the $B^0_{(s)}$ masses
Document Type
Working Paper
Author
LHCb CollaborationAaij, R.Beteta, C. AbellánAdeva, B.Adinolfi, M.Aidala, C. A.Ajaltouni, Z.Akar, S.Albicocco, P.Albrecht, J.Alessio, F.Alexander, M.Albero, A. AlfonsoAlkhazov, G.Cartelle, P. AlvarezAlves Jr, A. A.Amato, S.Amerio, S.Amhis, Y.An, L.Anderlini, L.Andreassi, G.Andreotti, M.Andrews, J. E.Archilli, F.Romeu, J. ArnauArtamonov, A.Artuso, M.Arzymatov, K.Aslanides, E.Atzeni, M.Audurier, B.Bachmann, S.Back, J. J.Baker, S.Balagura, V.Baldini, W.Baranov, A.Barlow, R. J.Barrand, G. C.Barsuk, S.Barter, W.Bartolini, M.Baryshnikov, F.Batozskaya, V.Batsukh, B.Battig, A.Battista, V.Bay, A.Beddow, J.Bedeschi, F.Bediaga, I.Beiter, A.Bel, L. J.Belin, S.Beliy, N.Bellee, V.Belloli, N.Belous, K.Belyaev, I.Bencivenni, G.Ben-Haim, E.Benson, S.Beranek, S.Berezhnoy, A.Bernet, R.Berninghoff, D.Bertholet, E.Bertolin, A.Betancourt, C.Betti, F.Bettler, M. O.Bezshyiko, Ia.Bhasin, S.Bhom, J.Bieker, M. S.Bifani, S.Billoir, P.Birnkraut, A.Bizzeti, A.Bjørn, M.Blago, M. P.Blake, T.Blanc, F.Blusk, S.Bobulska, D.Bocci, V.Garcia, O. BoenteBoettcher, T.Bondar, A.Bondar, N.Borghi, S.Borisyak, M.Borsato, M.Boubdir, M.Bowcock, T. J. V.Bozzi, C.Braun, S.Brodski, M.Brodzicka, J.Gonzalo, A. BrossaBrundu, D.Buchanan, E.Buonaura, A.Burr, C.Bursche, A.Buytaert, J.Byczynski, W.Cadeddu, S.Cai, H.Calabrese, R.Calladine, R.Calvi, M.Gomez, M. CalvoCamboni, A.Campana, P.Perez, D. H. CamporaCapriotti, L.Carbone, A.Carboni, G.Cardinale, R.Cardini, A.Carniti, P.Akiba, K. CarvalhoCasse, G.Cattaneo, M.Cavallero, G.Cenci, R.Chamont, D.Chapman, M. G.Charles, M.Charpentier, Ph.Chatzikonstantinidis, G.Chefdeville, M.Chekalina, V.Chen, C.Chen, S.Chitic, S. -G.Chobanova, V.Chrzaszcz, M.Chubykin, A.Ciambrone, P.Vidal, X. CidCiezarek, G.Cindolo, F.Clarke, P. E. L.Clemencic, M.Cliff, H. V.Closier, J.Coco, V.Coelho, J. A. B.Cogan, J.Cogneras, E.Cojocariu, L.Collins, P.Colombo, T.Comerma-Montells, A.Contu, A.Coombs, G.Coquereau, S.Corti, G.Corvo, M.Sobral, C. M. CostaCouturier, B.Cowan, G. A.Craik, D. C.Crocombe, A.Torres, M. CruzCurrie, R.Marinho, F. Da CunhaDa Silva, C. L.Dall'Occo, E.Dalseno, J.D'Ambrosio, C.Danilina, A.d'Argent, P.Davis, A.Francisco, O. De AguiarDe Bruyn, K.De Capua, S.De Cian, M.De Miranda, J. M.De Paula, L.De Serio, M.De Simone, P.de Vries, J. A.Dean, C. T.Dean, W.Decamp, D.Del Buono, L.Delaney, B.Dembinski, H. -P.Demmer, M.Dendek, A.Derkach, D.Deschamps, O.Desse, F.Dettori, F.Dey, B.Di Canto, A.Di Nezza, P.Didenko, S.Dijkstra, H.Dordei, F.Dorigo, M.Reis, A. C. dosSuárez, A. DosilDouglas, L.Dovbnya, A.Dreimanis, K.Dufour, L.Dujany, G.Durante, P.Durham, J. M.Dutta, D.Dzhelyadin, R.Dziewiecki, M.Dziurda, A.Dzyuba, A.Easo, S.Egede, U.Egorychev, V.Eidelman, S.Eisenhardt, S.Eitschberger, U.Ekelhof, R.Eklund, L.Ely, S.Ene, A.Escher, S.Esen, S.Evans, T.Falabella, A.Färber, C.Farley, N.Farry, S.Fazzini, D.Féo, M.Declara, P. FernandezPrieto, A. FernandezFerrari, F.Lopes, L. FerreiraRodrigues, F. FerreiraFerro-Luzzi, M.Filippov, S.Fini, R. A.Fiorini, M.Firlej, M.Fitzpatrick, C.Fiutowski, T.Fleuret, F.Fontana, M.Fontanelli, F.Forty, R.Lima, V. FrancoFrank, M.Frei, C.Fu, J.Funk, W.Gabriel, E.Torreira, A. GallasGalli, D.Gallorini, S.Gambetta, S.Gan, Y.Gandelman, M.Gandini, P.Gao, Y.Martin, L. M. GarciaPardiñas, J. GarcíaPlana, B. GarciaTico, J. GarraGarrido, L.Gascon, D.Gaspar, C.Gavardi, L.Gazzoni, G.Gerick, D.Gersabeck, E.Gersabeck, M.Gershon, T.Gerstel, D.Ghez, Ph.Gibson, V.Girard, O. G.Gironell, P. GironellaGiubega, L.Gizdov, K.Gligorov, V. V.Göbel, C.Golubkov, D.Golutvin, A.Gomes, A.Gorelov, I. V.Gotti, C.Govorkova, E.Grabowski, J. P.Diaz, R. GracianiCardoso, L. A. GranadoGraugés, E.Graverini, E.Graziani, G.Grecu, A.Greim, R.Griffith, P.Grillo, L.Gruber, L.Cazon, B. R. GrubergGrünberg, O.Gu, C.Gushchin, E.Guth, A.Guz, Yu.Gys, T.Hadavizadeh, T.Hadjivasiliou, C.Haefeli, G.Haen, C.Haines, S. C.Hamilton, B.Han, X.Hancock, T. H.Hansmann-Menzemer, S.Harnew, N.Harrison, T.Hasse, C.Hatch, M.He, J.Hecker, M.Heinicke, K.Heister, A.Hennessy, K.Henry, L.Heß, M.Heuel, J.Hicheur, A.Charman, R. HidalgoHill, D.Hilton, M.Hopchev, P. H.Hu, J.Hu, W.Huang, W.Huard, Z. C.Hulsbergen, W.Humair, T.Hushchyn, M.Hutchcroft, D.Hynds, D.Ibis, P.Idzik, M.Ilten, P.Inglessi, A.Inyakin, A.Ivshin, K.Jacobsson, R.Jalocha, J.Jans, E.Jashal, B. K.Jawahery, A.Jiang, F.John, M.Johnson, D.Jones, C. R.Joram, C.Jost, B.Jurik, N.Kandybei, S.Karacson, M.Kariuki, J. M.Karodia, S.Kazeev, N.Kecke, M.Keizer, F.Kelsey, M.Kenzie, M.Ketel, T.Khairullin, E.Khanji, B.Khurewathanakul, C.Kim, K. E.Kirn, T.Kirsebom, V. S.Klaver, S.Klimaszewski, K.Klimkovich, T.Koliiev, S.Kolpin, M.Kopecna, R.Koppenburg, P.Kostiuk, I.Kotriakhova, S.Kozeiha, M.Kravchuk, L.Kreps, M.Kress, F.Krokovny, P.Krupa, W.Krzemien, W.Kucewicz, W.Kucharczyk, M.Kudryavtsev, V.Kuonen, A. K.Kvaratskheliya, T.Lacarrere, D.Lafferty, G.Lai, A.Lancierini, D.Lanfranchi, G.Langenbruch, C.Latham, T.Lazzeroni, C.Gac, R. LeLefèvre, R.Leflat, A.Lemaitre, F.Leroy, O.Lesiak, T.Leverington, B.Li, P. -R.Li, Y.Li, Z.Liang, X.Likhomanenko, T.Lindner, R.Lionetto, F.Lisovskyi, V.Liu, G.Liu, X.Loh, D.Loi, A.Longstaff, I.Lopes, J. H.Lovell, G. H.Lucchesi, D.Martinez, M. LucioLuo, Y.Lupato, A.Luppi, E.Lupton, O.Lusiani, A.Lyu, X.Machefert, F.Maciuc, F.Macko, V.Mackowiak, P.Maddrell-Mander, S.Maev, O.Maguire, K.Maisuzenko, D.Majewski, M. W.Malde, S.Malecki, B.Malinin, A.Maltsev, T.Malygina, H.Manca, G.Mancinelli, G.Marangotto, D.Maratas, J.Marchand, J. F.Marconi, U.Benito, C. MarinMarinangeli, M.Marino, P.Marks, J.Marshall, P. J.Martellotti, G.Martinelli, M.Santos, D. MartinezVidal, F. MartinezMassafferri, A.Materok, M.Matev, R.Mathad, A.Mathe, Z.Matteuzzi, C.Mauri, A.Maurice, E.Maurin, B.McCann, M.McNab, A.McNulty, R.Mead, J. V.Meadows, B.Meaux, C.Meinert, N.Melnychuk, D.Merk, M.Merli, A.Michielin, E.Milanes, D. A.Millard, E.Minard, M. -N.Minzoni, L.Mitzel, D. S.Mödden, A.Mogini, A.Moise, R. D.Mombächer, T.Monroy, I. A.Monteil, S.Morandin, M.Morello, G.Morello, M. J.Morgunova, O.Moron, J.Morris, A. B.Mountain, R.Muheim, F.Mukherjee, M.Mulder, M.Müller, D.Müller, J.Müller, K.Müller, V.Murphy, C. H.Murray, D.Naik, P.Nakada, T.Nandakumar, R.Nandi, A.Nanut, T.Nasteva, I.Needham, M.Neri, N.Neubert, S.Neufeld, N.Newcombe, R.Nguyen, T. D.Nguyen-Mau, C.Nieswand, S.Niet, R.Nikitin, N.Nogay, A.Nolte, N. S.Oblakowska-Mucha, A.Obraztsov, V.Ogilvy, S.O'Hanlon, D. P.Oldeman, R.Onderwater, C. J. G.Ossowska, A.Goicochea, J. M. OtaloraOvsiannikova, T.Owen, P.Oyanguren, A.Pais, P. R.Pajero, T.Palano, A.Palutan, M.Panshin, G.Papanestis, A.Pappagallo, M.Pappalardo, L. L.Parker, W.Parkes, C.Passaleva, G.Pastore, A.Patel, M.Patrignani, C.Pearce, A.Pellegrino, A.Penso, G.Altarelli, M. PepePerazzini, S.Pereima, D.Perret, P.Pescatore, L.Petridis, K.Petrolini, A.Petrov, A.Petrucci, S.Petruzzo, M.Pietrzyk, B.Pietrzyk, G.Pikies, M.Pili, M.Pinci, D.Pinzino, J.Pisani, F.Piucci, A.Placinta, V.Playfer, S.Plews, J.Casasus, M. PloPolci, F.Lener, M. PoliPoluektov, A.Polukhina, N.Polyakov, I.Polycarpo, E.Pomery, G. J.Ponce, S.Popov, A.Popov, D.Poslavskii, S.Price, E.Prisciandaro, J.Prouve, C.Pugatch, V.Navarro, A. PuigPullen, H.Punzi, G.Qian, W.Qin, J.Quagliani, R.Quintana, B.Raab, N. V.Rachwal, B.Rademacker, J. H.Rama, M.Pernas, M. RamosRangel, M. S.Ratnikov, F.Raven, G.Salzgeber, M. RavonelReboud, M.Redi, F.Reichert, S.Reiss, F.Alepuz, C. RemonRen, Z.Renaudin, V.Ricciardi, S.Richards, S.Rinnert, K.Robbe, P.Robert, A.Rodrigues, A. B.Rodrigues, E.Lopez, J. A. RodriguezRoehrken, M.Roiser, S.Rollings, A.Romanovskiy, V.Vidal, A. RomeroRoth, J. D.Rotondo, M.Rudolph, M. S.Ruf, T.Vidal, J. RuizSilva, J. J. SaboridoSagidova, N.Saitta, B.Guimaraes, V. SalustinoGras, C. SanchezMayordomo, C. SanchezSedes, B. SanmartinSantacesaria, R.Rios, C. SantamarinaSantimaria, M.Santovetti, E.Sarpis, G.Sarti, A.Satriano, C.Satta, A.Saur, M.Savrina, D.Schael, S.Schellenberg, M.Schiller, M.Schindler, H.Schmelling, M.Schmelzer, T.Schmidt, B.Schneider, O.Schopper, A.Schreiner, H. F.Schubiger, M.Schulte, S.Schune, M. H.Schwemmer, R.Sciascia, B.Sciubba, A.Semennikov, A.Sepulveda, E. S.Sergi, A.Serra, N.Serrano, J.Sestini, L.Seuthe, A.Seyfert, P.Shapkin, M.Shcheglov, Y.Shears, T.Shekhtman, L.Shevchenko, V.Shmanin, E.Siddi, B. G.Coutinho, R. Silvade Oliveira, L. SilvaSimi, G.Simone, S.Skiba, I.Skidmore, N.Skwarnicki, T.Slater, M. W.Smeaton, J. G.Smith, E.Smith, I. T.Smith, M.Soares, M.Lavra, l. SoaresSokoloff, M. D.Soler, F. J. P.De Paula, B. SouzaSpaan, B.Norella, E. SpadaroSpradlin, P.Stagni, F.Stahl, M.Stahl, S.Stefko, P.Stefkova, S.Steinkamp, O.Stemmle, S.Stenyakin, O.Stepanova, M.Stevens, H.Stocchi, A.Stone, S.Storaci, B.Stracka, S.Stramaglia, M. E.Straticiuc, M.Straumann, U.Strokov, S.Sun, J.Sun, L.Sun, Y.Swientek, K.Szabelski, A.Szumlak, T.Szymanski, M.Tang, Z.Tekampe, T.Tellarini, G.Teubert, F.Thomas, E.Tilley, M. J.Tisserand, V.T'Jampens, S.Tobin, M.Tolk, S.Tomassetti, L.Tonelli, D.Tou, D. Y.Aoude, R. Tourinho JadallahTournefier, E.Traill, M.Tran, M. T.Trisovic, A.Tsaregorodtsev, A.Tuci, G.Tully, A.Tuning, N.Ukleja, A.Usachov, A.Ustyuzhanin, A.Uwer, U.Vagner, A.Vagnoni, V.Valassi, A.Valat, S.Valenti, G.van Beuzekom, M.van Herwijnen, E.van Tilburg, J.van Veghel, M.Gomez, R. VazquezRegueiro, P. VazquezSierra, C. VázquezVecchi, S.Velthuis, J. J.Veltri, M.Veneziano, G.Venkateswaran, A.Vernet, M.Veronesi, M.Vesterinen, M.Barbosa, J. V. VianaVieira, D.Diaz, M. VieitesViemann, H.Vilasis-Cardona, X.Vitkovskiy, A.Vitti, M.Volkov, V.Vollhardt, A.Bruch, D. VomVoneki, B.Vorobyev, A.Vorobyev, V.Voropaev, N.Waldi, R.Walsh, J.Wang, J.Wang, M.Wang, Y.Wang, Z.Ward, D. R.Wark, H. M.Watson, N. K.Websdale, D.Weiden, A.Weisser, C.Whitehead, M.Wilkinson, G.Wilkinson, M.Williams, I.Williams, M.Williams, M. R. J.Williams, T.Wilson, F. F.Winn, M.Wislicki, W.Witek, M.Wormser, G.Wotton, S. A.Wyllie, K.Xiao, D.Xie, Y.Xu, A.Xu, M.Xu, Q.Xu, Z.Yang, Z.Yao, Y.Yeomans, L. E.Yin, H.Yu, J.Yuan, X.Yushchenko, O.Zarebski, K. A.Zavertyaev, M.Zhang, D.Zhang, L.Zhang, W. C.Zhang, Y.Zhelezov, A.Zheng, Y.Zhu, X.Zhukov, V.Zonneveld, J. B.Zucchelli, S.
Source
Phys. Rev. Lett. 122, 191804 (2019)
Subject
High Energy Physics - Experiment
Language
Abstract
The first observation of the decays $B^0_{(s)} \to J/\psi p \overline{p}$ is reported, using proton-proton collision data corresponding to an integrated luminosity of $5.2{\text{\,fb}}^{-1}$, collected with the \mbox{LHCb}\xspace detector. These decays are suppressed due to limited available phase space, as well as due to Okubo-Zweig-Iizuka or Cabibbo suppression. The measured branching fractions are \begin{align*} \mathcal{B}(B^0 \to J/\psi p \overline{p}) &= (4.51\pm 0.40\; \text{(stat)} \pm 0.44\; \text{(syst)}) \times 10^{-7}, \\ \mathcal{B}(B^0_s \to J/\psi p \overline{p}) &= (3.58\pm 0.19\; \text{(stat)} \pm 0.39\; \text{(syst)}) \times 10^{-6}. \end{align*} For the $B^0_s$ meson, the result is much higher than the expected value of $ {\cal O} (10^{-9})$. The small available phase space in these decays also allows for the most precise single measurement of both the $B^0$ mass as ${5279.74 \pm 0.30\; ({\rm stat})\pm 0.10\; ({\rm syst})}$ MeV, and the $B^0_s$ mass as ${5366.85 \pm 0.19\; ({\rm stat})\pm 0.13\; ({\rm syst})}$ MeV.
Comment: All figures and tables, along with any supplementary material and additional information, are available at https://cern.ch/lhcbproject/Publications/p/LHCb-PAPER-2018-046.html