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Observation of B[subscript s][superscript 0] → [¯ over D][superscript * 0]ϕ and Search for B[superscript 0 ]→ [¯ over D]{superscript 0]ϕ Decays

R. Aaij, B. Adeva, M. Adinolfi, C. A. Aidala, Z. Ajaltouni, S. Akar, P Albicocco, J. Albrecht, F. Alessio, Michael Thomas Alexander, A. Alfonso Albero, S. Ali, G. Alkhazov, P. Álvarez Cartelle, Antonio Augusto Alves Junior, S. Amato, S. Amerio, Y. Amhis, L. An, L. Anderlini, G. Andreassi, M. Andreotti, J. E. Andrews, R. B. Appleby, F. Archilli, P. d’Argent, J. Arnau Romeu, A. Artamonov, M. Artuso, Kenenbek Arzymatov, E. Aslanides, M. Atzeni, S. Bachmann, J. J. Back, S. Baker, V. Balagura, W. Baldini, A. Baranov, R. J. Barlow, S. Barsuk, W. Barter, F. Baryshnikov, V. Batozskaya, B. Batsukh, V. Battista, A. Bay, J. Beddow, F. Bedeschi, I. Bediaga, A. Beiter, L. J. Bel, N Beliy, V. Bellee, N. Belloli, K. Belous, I. Belyaev, E. Ben-Haim, G. Bencivenni, S. Benson, S. Beranek, A. Berezhnoy, R. Bernet, D. Berninghoff, E. Bertholet, A. Bertolin, C. Betancourt, F. Betti, M.-O. Bettler, M. van Beuzekom, Ia. Bezshyiko, S. Bifani, P. Billoir, A. Birnkraut, A. Bizzeti, M. Bjørn, T. Blake, F. Blanc, S. Blusk, D. Bobulska, V. Bocci, O. Boente García, T. Boettcher, A. Bondar, A. Bondar, S. Borghi, M. Borisyak, M. Borsato, F. Bossu, M Boubdir, T. J. V. Bowcock, C. Bozzi, S. Braun, M. Brodski, J. Brodzicka, D. Brundu, E. Buchanan, A. Buonaura, C. Burr, A. Bursche, J. Buytaert, W Byczynski, S. Cadeddu, H. Cai, R. Calabrese, R. Calladine, M. Calvi, M. Calvo Gomez, A. Camboni, P Campana, D. H. Cámpora Pérez, L Capriotti, A. Carbone, G. Carboni, R. Cardinale, A. Cardini, P. Carniti, L. Carson, K. Carvalho Akiba, G Casse, L. Cassina, M. Cattaneo, G. Cavallero, R. Cenci, D. Chamont, M. G. Chapman, M. Charles, Ph. Charpentier, Nikolaos P. Konstantinidis, M. Chefdeville, V. Chekalina, C. Chen, S. Chen, S.-G. Chitic, V. Chobanova, M. Chrząszcz, A. Chubykin, P. Ciambrone, Xabier Cid Vidal, G Ciezarek, P. E. L. Clarke, M. Clemencic, H. V. Cliff, J. Closier, V. Coco, J. Cogan, E. Cogneras, L. Cojocariu, P. Collins, T. Colombo, A. Comerma-Montells, A Contu, G. Coombs, S. Coquereau, G. Corti, M. Corvo, C. M. Costa Sobral, B Couturier, G. A. Cowan, DC Craik, A. Crocombe, M. Cruz Torres, R. Currie, C. D’Ambrosio, F. Marinho, C. L. Da Silva, E. Dall’Occo, J. Dalseno, A. Danilina, A. Davis, O. De Aguiar Francisco, K De Bruyn, S. De Capua, M. De Cian, J. M. De Miranda, L De Paula, M. De Serio, P. De Simone, C. T. Dean, D Decamp, L. Del Buono, B. Delaney, H.-P. Dembinski, M. Demmer, A. Dendek, D. Derkach, O. Deschamps, F. Dettori, B. Dey, A. Di Canto, P. Di Nezza, S. Didenko, H. Dijkstra, F. Dordei, M. Dorigo, A. Dosil Suárez, L. Douglas, A. Dovbnya, K. Dreimanis, L. Dufour, G. Dujany, P. Durante, J.M Durham, D. Dutta, R. Dzhelyadin, M. Dziewiecki, A. Dziurda, A. Dzyuba, S. Easo, U Egede, V. Egorychev, S. Eidelman, S. Eisenhardt, U. Eitschberger, R. Ekelhof, L. Eklund, S. Ely, A. Ene, S. Escher, S Esen, H. M. Evans, T. Evans, A. Falabella, N. Farley, S. Farry, D. Fazzini, L. Federici, G. Fernández, P. Fernandez Declara, A. Fernandez Prieto, F. Ferrari, L. Ferreira Lopes, F. Ferreira Rodrigues, M Ferro-Luzzi, S. Filippov, R. A. Fini, M Fiorini, M. Firlej, C. Fitzpatrick, T Fiutowski, F Fleuret, M. Fontana, F. Fontanelli, R W Forty, V. Franco Lima, M. Frank, C. Frei, J. Fu, W. Funk, C. Färber, M. Féo, E. Gabriel, A. Gallas Torreira, D. Galli, S. Gallorini, S. Gambetta, M. Gandelman, P. Gandini, Y. Gao, L. M. Garcia Martin, B. Garcia Plana, J. García Pardiñas, J. Garra Tico, L. Garrido, D. Gascon, C. Gaspar, L. Gavardi, G. Gazzoni, D. Gerick, Evelina Mihova Gersabeck, M. Gersabeck, T. Gershon, Ph. Ghez, S. Gianì, V. Gibson, O. G. Girard, L. Giubega, K. Gizdov, V. V. Gligorov, D. Golubkov, A. Golutvin, A. Gomes, I. V. Gorelov, C. Gotti, E. Govorkova, J. P. Grabowski, R. Graciani Diaz, L. A. Granado Cardoso, E. Graugés, E Graverini, G Graziani, A. Grecu, R. Greim, P. Griffith, L. Grillo, L. Gruber, B. R. Gruberg Cazon, O. Grünberg, M. Guarise, E. Gushchin, Yu. Guz, T. Gys, C. Göbel, T. Hadavizadeh, C. Hadjivasiliou, G. Haefeli, C. Haen, S. C. Haines, B. Hamilton, X. Han, T. H. Hancock, S. Hansmann-Menzemer, N. Harnew, S. T. Harnew, C. Hasse, M. Hatch, J. He, Malte Hecker, K. Heinicke, A. Heister, K. Hennessy, L. Henry, Eric Van Herwijnen, M. Heß, A. Hicheur, D. Hill, M. Hilton, P. H. Hopchev, W. Hu, W. Huang, Z. C. Huard, W. Hulsbergen, T. Humair, M. Hushchyn, D. Hutchcroft, D. Hynds, P. Ibis, M. Idzik, P. Ilten, Kuzma A. Ivshin, R. Jacobsson, J. Jalocha, Eddy Jans, A. Jawahery, F. Jiang, M. John, D. Johnson, C.R. Jones, C. Joram, B. Jost, N. Jurik, S. Kandybei, M. Karacson, J.M. Kariuki, S. Karodia, N. Kazeev, M. Kecke, F. Keizer, M. Kelsey, M. Kenzie, T. Ketel, E. Khairullin, B. Khanji, C. Khurewathanakul, K. E. Kim, T. Kirn, S. Klaver, K. Klimaszewski, T. Klimkovich, S. Koliiev, M. Kolpin, R. Kopecna, P. Koppenburg, S. Kotriakhova, M. Kozeiha, L Kravchuk, M. Kreps, F. Kress, P Krokovny, W. Krupa, W. Krzemien, W. Kucewicz, M. Kucharczyk, V Kudryavtsev, A. K. Kuonen, T. Kvaratskheliya, D. Lacarrere, George D. Lafferty, A. Lai, Davide Lancierini, G Lanfranchi, Christoph Langenbruch, T. Latham, Cristina Lazzeroni, R. Le Gac, A. Leflat, J. Lefrançois, R Lefèvre, Florian Lemaitre, O. Leroy, T. Lesiak, B Leverington, P.-R. Li, T. Li, Z. Li, X. Liang, T. Likhomanenko, R. Lindner, F. Lionetto, V. Lisovskyi, X. Liu, D. Loh, Annalisa Loi, I. Longstaff, J.H. Lopes, D. Lucchesi, M. Lucio Martínez, A. Lupato, E. Luppi, O. Lupton, Alberto Lusiani, X. Lyu, F. Machefert, F. Maciuc, V. Macko, P. Mackowiak, S. Maddrell-Mander, O. Maev, K. Maguire, D. Maisuzenko, M. W. Majewski, S. Malde, B. Malecki, A. Malinin, Timofei Maltsev, G. Manca, G. Mancinelli, D. Marangotto, J. Maratas, J. F. Marchand, U. Marconi, C. Marín Benito, M. Marinangeli, P. Marino, J. Marks, G. Martellotti, M. Martin, M. Martinelli, D. Martinez Santos, F. Martínez-Vidal, André Massafferri, R Matev, A. Mathad, Z. Mathe, C. Matteuzzi, A. Mauri, E. Maurice, B. Maurin, A. Mazurov, M. McCann, A. McNab, R. McNulty, J. V. Mead, B. Meadows, C. 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Abstract

The first observation of the B[subscript s][superscript 0] → [¯ over D][superscript * 0]ϕ decay is reported, with a significance of more than seven standard deviations, from an analysis of pp collision data corresponding to an integrated luminosity of 3 fb[superscript -1], collected with the LHCb detector at center-of-mass energies of 7 and 8 TeV. The branching fraction is measured relative to that of the topologically similar decay B[superscript 0]→[¯ over D][superscript 0]π[superscript +]π[superscript -] and is found to be B(B[subscript s][superscript 0]→[¯ D][superscript *0]ϕ)=(3.7±0.5±0.3±0.2)×10[superscript -5], where the first uncertainty is statistical, the second systematic, and the third from the branching fraction of the B[superscript 0]→[¯ over D][superscript 0]π[superscript +]π[superscript -] decay. The fraction of longitudinal polarization in this decay is measured to be f[subscript L]=(73±15±4)%. The most precise determination of the branching fraction for the B[subscript s][superscript 0]→[¯ over D][superscript 0]ϕ decay is also obtained, B(B[subscript s][superscript 0]→[¯ over D][superscript 0]ϕ)=(3.0±0.3±0.2±0.2)×10[superscript -5]. An upper limit, B(B[superscript 0]→[¯ over D][superscript 0]ϕ)<2.0 (2.3)×10[superscript -6}] at 90% (95%) confidence level is set. A constraint on the ω-ϕ mixing angle δ is set at |δ|<5.2° (5.5°) at 90% (95%) confidence level.

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What this paper is about

The first observation of the B[subscript s][superscript 0] → [¯ over D][superscript * 0]ϕ decay is reported, with a significance of more than seven standard deviations, from an analysis of pp collision data corresponding to an integrated luminosity of 3 fb[superscript -1], collected with the LHCb detector at center-of-mass energies of 7 and 8 TeV. The branching fraction is measured relative to that of the topologically similar decay B[superscript 0]→[¯ over D][superscript 0]π[superscript +]π[superscript -] and is found to be B(B[subscript s][superscript 0]→[¯ D][superscript *0]ϕ)=(3.7±0.5±0.3±0.2)×10[superscript -5], where the first uncertainty is statistical, the second systematic, and the third from the branching fraction of the B[superscript 0]→[¯ over D][superscript 0]π[superscript +]π[superscript -] decay. The fraction of longitudinal polarization in this decay is measured to be f[subscript L]=(73±15±4)%. The most precise determination of the branching fraction for the B[subscript s][superscript 0]→[¯ over D][superscript 0]ϕ decay is also obtained, B(B[subscript s][superscript 0]→[¯ over D][superscript 0]ϕ)=(3.0±0.3±0.2±0.2)×10[superscript -5]. An upper limit, B(B[superscript 0]→[¯ over D][superscript 0]ϕ)<2.0 (2.3)×10[superscript -6}] at 90% (95%) confidence level is set. A constraint on the ω-ϕ mixing angle δ is set at |δ|<5.2° (5.5°) at 90% (95%) confidence level.

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Available abstract

The first observation of the B[subscript s][superscript 0] → [¯ over D][superscript * 0]ϕ decay is reported, with a significance of more than seven standard deviations, from an analysis of pp collision data corresponding to an integrated luminosity of 3 fb[superscript -1], collected with the LHCb detector at center-of-mass energies of 7 and 8 TeV. The branching fraction is measured relative to that of the topologically similar decay B[superscript 0]→[¯ over D][superscript 0]π[superscript +]π[superscript -] and is found to be B(B[subscript s][superscript 0]→[¯ D][superscript *0]ϕ)=(3.7±0.5±0.3±0.2)×10[superscript -5], where the first uncertainty is statistical, the second systematic, and the third from the branching fraction of the B[superscript 0]→[¯ over D][superscript 0]π[superscript +]π[superscript -] decay. The fraction of longitudinal polarization in this decay is measured to be f[subscript L]=(73±15±4)%. The most precise determination of the branching fraction for the B[subscript s][superscript 0]→[¯ over D][superscript 0]ϕ decay is also obtained, B(B[subscript s][superscript 0]→[¯ over D][superscript 0]ϕ)=(3.0±0.3±0.2±0.2)×10[superscript -5]. An upper limit, B(B[superscript 0]→[¯ over D][superscript 0]ϕ)<2.0 (2.3)×10[superscript -6}] at 90% (95%) confidence level is set. A constraint on the ω-ϕ mixing angle δ is set at |δ|<5.2° (5.5°) at 90% (95%) confidence level.

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Observation of B[subscript s][superscript 0] → [¯ over D][superscript * 0]ϕ and Search for B[superscript 0 ]→ [¯ over D]{superscript 0]ϕ Decays — Research Paper | ScholarLens