학술논문

Measurement of $CP$ observables in $B^\pm \to D^{(*)} K^\pm$ and $B^\pm \to D^{(*)} \pi^\pm$ decays
Document Type
Working Paper
Author
LHCb collaborationAaij, R.Adeva, B.Adinolfi, M.Ajaltouni, Z.Akar, S.Albrecht, J.Alessio, F.Alexander, M.Albero, A. AlfonsoAli, S.Alkhazov, G.Cartelle, P. AlvarezAlves Jr, A. A.Amato, S.Amerio, S.Amhis, Y.An, L.Anderlini, L.Andreassi, G.Andreotti, M.Andrews, J. E.Appleby, R. B.Archilli, F.d'Argent, P.Romeu, J. ArnauArtamonov, A.Artuso, M.Aslanides, E.Auriemma, G.Baalouch, M.Babuschkin, I.Bachmann, S.Back, J. J.Badalov, A.Baesso, C.Baker, S.Balagura, V.Baldini, W.Baranov, A.Barlow, R. J.Barschel, C.Barsuk, S.Barter, W.Baryshnikov, F.Batozskaya, V.Battista, V.Bay, A.Beaucourt, L.Beddow, J.Bedeschi, F.Bediaga, I.Beiter, A.Bel, L. J.Beliy, N.Bellee, V.Belloli, N.Belous, K.Belyaev, I.Ben-Haim, E.Bencivenni, G.Benson, S.Beranek, S.Berezhnoy, A.Bernet, R.Berninghoff, D.Bertholet, E.Bertolin, A.Betancourt, C.Betti, F.Bettler, M. -O.van Beuzekom, M.Bezshyiko, Ia.Bifani, S.Billoir, P.Birnkraut, A.Bitadze, A.Bizzeti, A.Bjørn, M.Blake, T.Blanc, F.Blouw, J.Blusk, S.Bocci, V.Boettcher, T.Bondar, A.Bondar, N.Bonivento, W.Bordyuzhin, I.Borgheresi, A.Borghi, S.Borisyak, M.Borsato, M.Bossu, F.Boubdir, M.Bowcock, T. J. V.Bowen, E.Bozzi, C.Braun, S.Britton, T.Brodzicka, J.Brundu, D.Buchanan, E.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.Carson, L.Akiba, K. CarvalhoCasse, G.Cassina, L.Garcia, L. CastilloCattaneo, M.Cavallero, G.Cenci, R.Chamont, D.Charles, M.Charpentier, Ph.Chatzikonstantinidis, G.Chefdeville, M.Chen, S.Cheung, S. F.Chitic, S. -G.Chobanova, V.Chrzaszcz, M.Chubykin, A.Ciambrone, P.Vidal, X. CidCiezarek, G.Clarke, P. E. L.Clemencic, M.Cliff, H. V.Closier, J.Cogan, J.Cogneras, E.Cogoni, V.Cojocariu, L.Collins, P.Colombo, T.Comerma-Montells, A.Contu, A.Cook, 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.D'Ambrosio, C.Marinho, F. Da CunhaDall'Occo, E.Dalseno, J.Davis, A.Francisco, O. De AguiarDe Capua, S.De Cian, M.De Miranda, J. M.De Paula, L.De Serio, M.De Simone, P.Dean, C. T.Decamp, D.Del Buono, L.Dembinski, H. -P.Demmer, M.Dendek, A.Derkach, D.Deschamps, O.Dettori, F.Dey, B.Di Canto, A.Di Nezza, P.Dijkstra, H.Dordei, F.Dorigo, M.Suárez, A. DosilDouglas, L.Dovbnya, A.Dreimanis, K.Dufour, L.Dujany, G.Durante, P.Dzhelyadin, R.Dziewiecki, M.Dziurda, A.Dzyuba, A.Easo, S.Ebert, M.Egede, U.Egorychev, V.Eidelman, S.Eisenhardt, S.Eitschberger, U.Ekelhof, R.Eklund, L.Ely, S.Esen, S.Evans, H. M.Evans, T.Falabella, A.Farley, N.Farry, S.Fay, R.Fazzini, D.Federici, L.Ferguson, D.Fernandez, G.Declara, P. FernandezPrieto, A. FernandezFerrari, F.Rodrigues, F. FerreiraFerro-Luzzi, M.Filippov, S.Fini, R. A.Fiore, M.Fiorini, M.Firlej, M.Fitzpatrick, C.Fiutowski, T.Fleuret, F.Fohl, K.Fontana, M.Fontanelli, F.Forshaw, D. C.Forty, R.Lima, V. FrancoFrank, M.Frei, C.Fu, J.Funk, W.Furfaro, E.Färber, C.Gabriel, E.Torreira, A. GallasGalli, D.Gallorini, S.Gambetta, S.Gandelman, M.Gandini, P.Gao, Y.Martin, L. M. GarciaPardiñas, J. GarcíaTico, J. GarraGarrido, L.Garsed, P. J.Gascon, D.Gaspar, C.Gavardi, L.Gazzoni, G.Gerick, D.Gersabeck, E.Gersabeck, M.Gershon, T.Ghez, Ph.Gianì, S.Gibson, V.Girard, O. G.Giubega, L.Gizdov, K.Gligorov, V. V.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.Gushchin, E.Guz, Yu.Gys, T.Göbel, C.Hadavizadeh, T.Hadjivasiliou, C.Haefeli, G.Haen, C.Haines, S. C.Hamilton, B.Han, X.Hancock, T. H.Hansmann-Menzemer, S.Harnew, N.Harnew, S. T.Harrison, J.Hasse, C.Hatch, M.He, J.Hecker, M.Heinicke, K.Heister, A.Hennessy, K.Henrard, P.Henry, L.van Herwijnen, E.Heß, M.Hicheur, A.Hill, D.Hombach, C.Hopchev, P. H.Huard, Z. C.Hulsbergen, W.Humair, T.Hushchyn, M.Hutchcroft, D.Ibis, P.Idzik, M.Ilten, P.Jacobsson, R.Jalocha, J.Jans, E.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.Kelsey, M.Kenzie, M.Ketel, T.Khairullin, E.Khanji, B.Khurewathanakul, C.Kirn, T.Klaver, S.Klimaszewski, K.Klimkovich, T.Koliiev, S.Kolpin, M.Komarov, I.Kopecna, R.Koppenburg, P.Kosmyntseva, A.Kotriakhova, S.Kozeiha, M.Kravchuk, L.Kreps, M.Krokovny, P.Kruse, F.Krzemien, W.Kucewicz, W.Kucharczyk, M.Kudryavtsev, V.Kuonen, A. K.Kurek, K.Kvaratskheliya, T.Lacarrere, D.Lafferty, G.Lai, A.Lanfranchi, G.Langenbruch, C.Latham, T.Lazzeroni, C.Gac, R. LeLeflat, A.Lefrançois, J.Lefèvre, R.Lemaitre, F.Cid, E. LemosLeroy, O.Lesiak, T.Leverington, B.Li, P. -R.Li, T.Li, Y.Li, Z.Likhomanenko, T.Lindner, R.Lionetto, F.Lisovskyi, V.Liu, X.Loh, D.Loi, A.Longstaff, I.Lopes, J. H.Lucchesi, D.Martinez, M. LucioLuo, H.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.Malinin, A.Maltsev, T.Manca, G.Mancinelli, G.Manning, P.Marangotto, D.Maratas, J.Marchand, J. F.Marconi, U.Benito, C. MarinMarinangeli, M.Marino, P.Marks, J.Martellotti, G.Martin, M.Martinelli, M.Santos, D. MartinezVidal, F. MartinezTostes, D. MartinsMassacrier, L. M.Massafferri, A.Matev, R.Mathad, A.Mathe, Z.Matteuzzi, C.Mauri, A.Maurice, E.Maurin, B.Mazurov, A.McCann, M.McNab, A.McNulty, R.Mead, J. V.Meadows, B.Meaux, C.Meier, F.Meinert, N.Melnychuk, D.Merk, M.Merli, A.Michielin, E.Milanes, D. A.Millard, E.Minard, M. -N.Minzoni, L.Mitzel, D. S.Mogini, A.Rodriguez, J. MolinaMombächer, T.Monroy, I. A.Monteil, S.Morandin, M.Morello, M. J.Morgunova, O.Moron, J.Morris, A. B.Mountain, R.Muheim, F.Mulder, M.Müller, D.Müller, J.Müller, K.Müller, V.Naik, P.Nakada, T.Nandakumar, R.Nandi, A.Nasteva, I.Needham, M.Neri, N.Neubert, S.Neufeld, N.Neuner, M.Nguyen, T. D.Nguyen-Mau, C.Nieswand, S.Niet, R.Nikitin, N.Nikodem, T.Nogay, A.O'Hanlon, D. P.Oblakowska-Mucha, A.Obraztsov, V.Ogilvy, S.Oldeman, R.Onderwater, C. J. G.Ossowska, A.Goicochea, J. M. OtaloraOwen, P.Oyanguren, A.Pais, P. R.Palano, A.Palutan, M.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.Perret, P.Pescatore, L.Petridis, K.Petrolini, A.Petrov, A.Petruzzo, M.Olloqui, E. PicatostePietrzyk, B.Pikies, M.Pinci, D.Pisani, F.Pistone, A.Piucci, A.Placinta, V.Playfer, S.Casasus, M. PloPolci, F.Lener, M. PoliPoluektov, A.Polyakov, I.Polycarpo, E.Pomery, G. J.Ponce, S.Popov, A.Popov, D.Poslavskii, S.Potterat, C.Price, E.Prisciandaro, J.Prouve, C.Pugatch, V.Navarro, A. PuigPullen, H.Punzi, G.Qian, W.Quagliani, R.Quintana, B.Rachwal, B.Rademacker, J. H.Rama, M.Pernas, M. RamosRangel, M. S.Raniuk, I.Ratnikov, F.Raven, G.Salzgeber, M. RavonelReboud, M.Redi, F.Reichert, S.Reis, A. C. dosAlepuz, C. RemonRenaudin, V.Ricciardi, S.Richards, S.Rihl, M.Rinnert, K.Molina, V. RivesRobbe, P.Robert, A.Rodrigues, A. B.Rodrigues, E.Lopez, J. A. RodriguezPerez, P. RodriguezRogozhnikov, A.Roiser, S.Rollings, A.Romanovskiy, V.Vidal, A. RomeroRonayne, J. W.Rotondo, M.Rudolph, M. S.Ruf, T.Valls, P. RuizVidal, J. RuizSilva, J. J. SaboridoSadykhov, E.Sagidova, N.Saitta, B.Guimaraes, V. SalustinoMayordomo, C. SanchezSedes, B. SanmartinSantacesaria, R.Rios, C. SantamarinaSantimaria, M.Santovetti, E.Sarpis, G.Sarti, A.Satriano, C.Satta, A.Saunders, D. M.Savrina, D.Schael, S.Schellenberg, M.Schiller, M.Schindler, H.Schlupp, M.Schmelling, M.Schmelzer, T.Schmidt, B.Schneider, O.Schopper, A.Schreiner, H. F.Schubert, K.Schubiger, M.Schune, M. -H.Schwemmer, R.Sciascia, B.Sciubba, A.Semennikov, A.Sepulveda, E. S.Sergi, A.Serra, N.Serrano, J.Sestini, L.Seyfert, P.Shapkin, M.Shapoval, I.Shcheglov, Y.Shears, T.Shekhtman, L.Shevchenko, V.Siddi, B. G.Coutinho, R. Silvade Oliveira, L. SilvaSimi, G.Simone, S.Sirendi, M.Skidmore, N.Skwarnicki, T.Smith, E.Smith, I. T.Smith, J.Smith, M.Lavra, l. SoaresSokoloff, M. D.Soler, F. J. P.De Paula, B. SouzaSpaan, B.Spradlin, P.Sridharan, S.Stagni, F.Stahl, M.Stahl, S.Stefko, P.Stefkova, S.Steinkamp, O.Stemmle, S.Stenyakin, O.Stepanova, M.Stevens, H.Stone, S.Storaci, B.Stracka, S.Stramaglia, M. E.Straticiuc, M.Straumann, U.Sun, L.Sutcliffe, W.Swientek, K.Syropoulos, V.Szczekowski, M.Szumlak, T.Szymanski, M.T'Jampens, S.Tayduganov, A.Tekampe, T.Tellarini, G.Teubert, F.Thomas, E.van Tilburg, J.Tilley, M. J.Tisserand, V.Tobin, M.Tolk, S.Tomassetti, L.Tonelli, D.Toriello, F.Aoude, R. Tourinho JadallahTournefier, E.Traill, M.Tran, M. T.Tresch, M.Trisovic, A.Tsaregorodtsev, A.Tsopelas, P.Tully, A.Tuning, N.Ukleja, A.Usachov, A.Ustyuzhanin, A.Uwer, U.Vacca, C.Vagner, A.Vagnoni, V.Valassi, A.Valat, S.Valenti, G.Gomez, R. VazquezRegueiro, P. VazquezVecchi, S.van Veghel, M.Velthuis, J. J.Veltri, M.Veneziano, G.Venkateswaran, A.Verlage, T. A.Vernet, M.Vesterinen, M.Barbosa, J. V. VianaViaud, B.Vieira, D.Diaz, M. VieitesViemann, H.Vilasis-Cardona, X.Vitti, M.Volkov, V.Vollhardt, A.Voneki, B.Vorobyev, A.Vorobyev, V.Voß, C.de Vries, J. A.Sierra, C. VázquezWaldi, R.Wallace, C.Wallace, R.Walsh, J.Wang, J.Ward, D. R.Wark, H. M.Watson, N. K.Websdale, D.Weiden, A.Whitehead, M.Wicht, J.Wilkinson, G.Wilkinson, M.Williams, M.Williams, M. P.Williams, T.Wilson, F. F.Wimberley, J.Winn, M.Wishahi, J.Wislicki, W.Witek, M.Wormser, G.Wotton, S. A.Wraight, K.Wyllie, K.Xie, Y.Xu, Z.Yang, Z.Yao, Y.Yin, H.Yu, J.Yuan, X.Yushchenko, O.Zarebski, K. A.Zavertyaev, M.Zhang, L.Zhang, Y.Zhelezov, A.Zheng, Y.Zhu, X.Zhukov, V.Zonneveld, J. B.Zucchelli, S.
Source
Physics Letters B 777 (2018) 16-30
Subject
High Energy Physics - Experiment
Language
Abstract
Measurements of $CP$ observables in $B^\pm \rightarrow D^{(*)} K^\pm$ and $B^\pm \rightarrow D^{(*)} \pi^\pm$ decays are presented, where $D^{(*)}$ indicates a neutral $D$ or $D^*$ meson that is an admixture of $D^{(*)0}$ and $\bar{D}^{(*)0}$ states. Decays of the $D^*$ meson to the $D\pi^0$ and $D\gamma$ final states are partially reconstructed without inclusion of the neutral pion or photon, resulting in distinctive shapes in the $B$ candidate invariant mass distribution. Decays of the $D$ meson are fully reconstructed in the $K^\pm \pi^\mp$, $K^+ K^-$ and $\pi^+ \pi^-$ final states. The analysis uses a sample of charged $B$ mesons produced in $pp$ collisions collected by the LHCb experiment, corresponding to an integrated luminosity of 2.0, 1.0 and 2.0 fb$^{-1}$ taken at centre-of-mass energies of $\sqrt{s}$ = 7, 8 and 13 TeV, respectively. The study of $B^{\pm} \to D^{*} K^{\pm}$ and $B^{\pm} \to D^{*} \pi^{\pm}$ decays using a partial reconstruction method is the first of its kind, while the measurement of $B^{\pm} \to D K^{\pm}$ and $B^{\pm} \to D \pi^{\pm}$ decays is an update of previous LHCb measurements. The $B^{\pm} \to D K^{\pm}$ results are the most precise to date.
Comment: All figures and tables, along with any supplementary material and additional information, are available at https://lhcbproject.web.cern.ch/lhcbproject/Publications/LHCbProjectPublic/LHCb-PAPER-2017-021.html