학술논문

Observation of the Bs0→ D*+D*− decay
Document Type
Original Paper
Author
Aaij, R.Abdelmotteleb, A. S. W.Abellan Beteta, C.Abudinén, F.Ackernley, T.Adeva, B.Adinolfi, M.Adlarson, P.Afsharnia, H.Agapopoulou, C.Aidala, C. A.Aiola, S.Ajaltouni, Z.Akar, S.Akiba, K.Albrecht, J.Alessio, F.Alexander, M.Alfonso Albero, A.Aliouche, Z.Alvarez Cartelle, P.Amalric, R.Amato, S.Amey, J. L.Amhis, Y.An, L.Anderlini, L.Andersson, M.Andreianov, A.Andreotti, M.Andreou, D.Ao, D.Archilli, F.Artamonov, A.Artuso, M.Aslanides, E.Atzeni, M.Audurier, B.Bachmann, S.Bachmayer, M.Back, J. J.Bailly-reyre, A.Baladron Rodriguez, P.Balagura, V.Baldini, W.Baptista de Souza Leite, J.Barbetti, M.Barlow, R. J.Barsuk, S.Barter, W.Bartolini, M.Baryshnikov, F.Basels, J. M.Bassi, G.Batsukh, B.Battig, A.Bay, A.Beck, A.Becker, M.Bedeschi, F.Bediaga, I. B.Beiter, A.Belavin, V.Belin, S.Bellee, V.Belous, K.Belov, I.Belyaev, I.Benane, G.Bencivenni, G.Ben-Haim, E.Berezhnoy, A.Bernet, R.Bernet Andres, S.Berninghoff, D.Bernstein, H. C.Bertella, C.Bertolin, A.Betancourt, C.Betti, F.Bezshyiko, Ia.Bhasin, S.Bhom, J.Bian, L.Bieker, M. S.Biesuz, N. V.Bifani, S.Billoir, P.Biolchini, A.Birch, M.Bishop, F. C. R.Bitadze, A.Bizzeti, A.Blago, M. P.Blake, T.Blanc, F.Blusk, S.Bobulska, D.Boelhauve, J. A.Boente Garcia, O.Boettcher, T.Boldyrev, A.Bolognani, C. S.Bolzonella, R.Bondar, N.Borgato, F.Borghi, S.Borsato, M.Borsuk, J. T.Bouchiba, S. A.Bowcock, T. J. V.Boyer, A.Bozzi, C.Bradley, M. J.Braun, S.Brea Rodriguez, A.Brodzicka, J.Brossa Gonzalo, A.Brown, J.Brundu, D.Buonaura, A.Buonincontri, L.Burke, A. T.Burr, C.Bursche, A.Butkevich, A.Butter, J. S.Buytaert, J.Byczynski, W.Cadeddu, S.Cai, H.Calabrese, R.Calefice, L.Cali, S.Calladine, R.Calvi, M.Calvo Gomez, M.Campana, P.Campora Perez, D. H.Campoverde Quezada, A. F.Capelli, S.Capriotti, L.Carbone, A.Carboni, G.Cardinale, R.Cardini, A.Carli, I.Carniti, P.Carus, L.Casais Vidal, A.Caspary, R.Casse, G.Cattaneo, M.Cavallero, G.Cavallini, V.Celani, S.Cerasoli, J.Cervenkov, D.Chadwick, A. J.Chapman, M. G.Charles, M.Charpentier, Ph.Chavez Barajas, C. A.Chefdeville, M.Chen, C.Chen, S.Chernov, A.Chernyshenko, S.Chobanova, V.Cholak, S.Chrzaszcz, M.Chubykin, A.Chulikov, V.Ciambrone, P.Cicala, M. F.Cid Vidal, X.Ciezarek, G.Ciullo, G.Clarke, P. E. L.Clemencic, M.Cliff, H. V.Closier, J.Cobbledick, J. L.Coco, V.Coelho, J. A. B.Cogan, J.Cogneras, E.Cojocariu, L.Collins, P.Colombo, T.Congedo, L.Contu, A.Cooke, N.Corredoira, I.Corti, G.Couturier, B.Craik, D. C.Crkovská, J.Cruz Torres, M.Currie, R.Da Silva, C. L.Dadabaev, S.Dai, L.Dai, X.Dall’Occo, E.Dalseno, J.D’Ambrosio, C.Daniel, J.Danilina, A.d’Argent, P.Davies, J. E.Davis, A.De Aguiar Francisco, O.de Boer, J.De Bruyn, K.De Capua, S.De Cian, M.De Freitas Carneiro Da Graca, U.De Lucia, E.De Miranda, J. M.De Paula, L.De Serio, M.De Simone, D.De Simone, P.De Vellis, F.de Vries, J. A.Dean, C. T.Debernardis, F.Decamp, D.Dedu, V.Del Buono, L.Delaney, B.Dembinski, H.-P.Denysenko, V.Deschamps, O.Dettori, F.Dey, B.Di Cicco, A.Di Nezza, P.Diachkov, I.Didenko, S.Dieste Maronas, L.Ding, S.Dobishuk, V.Dolmatov, A.Dong, C.Donohoe, A. M.Dordei, F.dos Reis, A. C.Douglas, L.Downes, A. G.Duda, P.Dudek, M. W.Dufour, L.Duk, V.Durante, P.Duras, M. M.Durham, J. M.Dutta, D.Dziurda, A.Dzyuba, A.Easo, S.Egede, U.Egorychev, V.Eidelman, S.Eirea Orro, C.Eisenhardt, S.Ejopu, E.Ek-In, S.Eklund, L.Ely, S.Ene, A.Epple, E.Escher, S.Eschle, J.Esen, S.Evans, T.Fabiano, F.Falcao, L. N.Fan, Y.Fang, B.Fantini, L.Faria, M.Farry, S.Fazzini, D.Felkowski, L. FFeo, M.Fernandez Gomez, M.Fernez, A. D.Ferrari, F.Ferreira Lopes, L.Ferreira Rodrigues, F.Ferreres Sole, S.Ferrillo, M.Ferro-Luzzi, M.Filippov, S.Fini, R. A.Fiorini, M.Firlej, M.Fischer, K. M.Fitzgerald, D. S.Fitzpatrick, C.Fiutowski, T.Fleuret, F.Fontana, M.Fontanelli, F.Forty, R.Foulds-Holt, D.Franco Lima, V.Franco Sevilla, M.Frank, M.Franzoso, E.Frau, G.Frei, C.Friday, D. A.Fu, J.Fuehring, Q.Fulghesu, T.Gabriel, E.Galati, G.Galati, M. D.Gallas Torreira, A.Galli, D.Gambetta, S.Gan, Y.Gandelman, M.Gandini, P.Gao, Y.Garau, M.Garcia Martin, L. M.Garcia Moreno, P.García Pardiñas, J.Garcia Plana, B.Garcia Rosales, F. A.Garrido, L.Gaspar, C.Geertsema, R. E.Gerick, D.Gerken, L. L.Gersabeck, E.Gersabeck, M.Gershon, T.Giambastiani, L.Gibson, V.Giemza, H. K.Gilman, A. L.Giovannetti, M.Gioventù, A.Gironella Gironell, P.Giugliano, C.Giza, M. A.Gizdov, K.Gkougkousis, E. L.Gligorov, V. V.Göbel, C.Golobardes, E.Golubkov, D.Golutvin, A.Gomes, A.Gomez Fernandez, S.Goncalves Abrantes, F.Goncerz, M.Gong, G.Gorelov, I. V.Gotti, C.Grabowski, J. P.Grammatico, T.Granado Cardoso, L. A.Graugés, E.Graverini, E.Graziani, G.Grecu, A. T.Greeven, L. M.Grieser, N. A.Grillo, L.Gromov, S.Gruberg Cazon, B. R.Gu, C.Guarise, M.Guittiere, M.Günther, P. A.Gushchin, E.Guth, A.Guz, Y.Gys, T.Hadavizadeh, T.Haefeli, G.Haen, C.Haimberger, J.Haines, S. C.Halewood-leagas, T.Halvorsen, M. M.Hamilton, P. M.Hammerich, J.Han, Q.Han, X.Hansen, E. B.Hansmann-Menzemer, S.Hao, L.Harnew, N.Harrison, T.Hasse, C.Hatch, M.He, J.Heijhoff, K.Heinicke, K.Henderson, C.Henderson, R. D. L.Hennequin, A. M.Hennessy, K.Henry, L.Herd, J.Heuel, J.Hicheur, A.Hill, D.Hilton, M.Hollitt, S. E.Horswill, J.Hou, R.Hou, Y.Hu, J.Hu, J.Hu, W.Hu, X.Huang, W.Huang, X.Hulsbergen, W.Hunter, R. J.Hushchyn, M.Hutchcroft, D.Ibis, P.Idzik, M.Ilin, D.Ilten, P.Inglessi, A.Iniukhin, A.Ishteev, A.Ivshin, K.Jacobsson, R.Jage, H.Jaimes Elles, S. J.Jakobsen, S.Jans, E.Jashal, B. K.Jawahery, A.Jevtic, V.Jiang, E.Jiang, X.Jiang, Y.John, M.Johnson, D.Jones, C. R.Jones, T. P.Jost, B.Jurik, N.Juszczak, I.Kandybei, S.Kang, Y.Karacson, M.Karpenkov, D.Karpov, M.Kautz, J. W.Keizer, F.Keller, D. M.Kenzie, M.Ketel, T.Khanji, B.Kharisova, A.Kholodenko, S.Khreich, G.Kirn, T.Kirsebom, V. S.Kitouni, O.Klaver, S.Kleijne, N.Klimaszewski, K.Kmiec, M. R.Koliiev, S.Kondybayeva, A.Konoplyannikov, A.Kopciewicz, P.Kopecna, R.Koppenburg, P.Korolev, M.Kostiuk, I.Kot, O.Kotriakhova, S.Kozachuk, A.Kravchenko, P.Kravchuk, L.Krawczyk, R. D.Kreps, M.Kretzschmar, S.Krokovny, P.Krupa, W.Krzemien, W.Kubat, J.Kubis, S.Kucewicz, W.Kucharczyk, M.Kudryavtsev, V.Kunde, G. J.Kupsc, A.Lacarrere, D.Lafferty, G.Lai, A.Lampis, A.Lancierini, D.Landesa Gomez, C.Lane, J. J.Lane, R.Lanfranchi, G.Langenbruch, C.Langer, J.Lantwin, O.Latham, T.Lazzari, F.Lazzaroni, M.Le Gac, R.Lee, S. H.Lefèvre, R.Leflat, A.Legotin, S.Lenisa, P.Leroy, O.Lesiak, T.Leverington, B.Li, A.Li, H.Li, K.Li, P.Li, P.-R.Li, S.Li, T.Li, Y.Li, Z.Liang, X.Lin, C.Lin, T.Lindner, R.Lisovskyi, V.Litvinov, R.Liu, G.Liu, H.Liu, Q.Liu, S.Lobo Salvia, A.Loi, A.Lollini, R.Lomba Castro, J.Longstaff, I.Lopes, J. H.Lopez Huertas, A.López Soliño, S.Lovell, G. H.Lu, Y.Lucarelli, C.Lucchesi, D.Luchuk, S.Lucio Martinez, M.Lukashenko, V.Luo, Y.Lupato, A.Luppi, E.Lusiani, A.Lynch, K.Lyu, X.-R.Ma, L.Ma, R.Maccolini, S.Machefert, F.Maciuc, F.Mackay, I.Macko, V.Mackowiak, P.Madhan Mohan, L. R.Maevskiy, A.Maisuzenko, D.Majewski, M. W.Malczewski, J. J.Malde, S.Malecki, B.Malinin, A.Maltsev, T.Manca, G.Mancinelli, G.Mancuso, C.Manuzzi, D.Manzari, C. A.Marangotto, D.Marchand, J. F.Marconi, U.Mariani, S.Marin Benito, C.Marks, J.Marshall, A. M.Marshall, P. J.Martelli, G.Martellotti, G.Martinazzoli, L.Martinelli, M.Martinez Santos, D.Martinez Vidal, F.Massafferri, A.Materok, M.Matev, R.Mathad, A.Matiunin, V.Matteuzzi, C.Mattioli, K. R.Mauri, A.Maurice, E.Mauricio, J.Mazurek, M.McCann, M.Mcconnell, L.McGrath, T. H.McHugh, N. T.McNab, A.McNulty, R.Mead, J. V.Meadows, B.Meier, G.Melnychuk, D.Meloni, S.Merk, M.Merli, A.Meyer Garcia, L.Miao, D.Mikhasenko, M.Milanes, D. A.Millard, E.Milovanovic, M.Minard, M.-N.Minotti, A.Miralles, T.Mitchell, S. E.Mitreska, B.Mitzel, D. S.Mödden, A.Mohammed, R. A.Moise, R. D.Mokhnenko, S.Mombächer, T.Monk, M.Monroy, I. A.Monteil, S.Morandin, M.Morello, G.Morello, M. J.Moron, J.Morris, A. B.Morris, A. G.Mountain, R.Mu, H.Muhammad, E.Muheim, F.Mulder, M.Müller, K.Murphy, C. H.Murray, D.Murta, R.Muzzetto, P.Naik, P.Nakada, T.Nandakumar, R.Nanut, T.Nasteva, I.Needham, M.Neri, N.Neubert, S.Neufeld, N.Neustroev, P.Newcombe, R.Nicolini, J.Niel, E. M.Nieswand, S.Nikitin, N.Nolte, N. S.Normand, C.Novoa Fernandez, J.Nunez, C.Oblakowska-Mucha, A.Obraztsov, V.Oeser, T.O’Hanlon, D. P.Okamura, S.Oldeman, R.Oliva, F.Onderwater, C. J. G.O’Neil, R. H.Otalora Goicochea, J. M.Ovsiannikova, T.Owen, P.Oyanguren, A.Ozcelik, O.Padeken, K. O.Pagare, B.Pais, P. R.Pajero, T.Palano, A.Palutan, M.Pan, Y.Panshin, G.Paolucci, L.Papanestis, A.Pappagallo, M.Pappalardo, L. 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B.Rodrigues, E.Rodriguez Fernandez, E.Rodriguez Lopez, J. A.Rodriguez Rodriguez, E.Rolf, D. L.Rollings, A.Roloff, P.Romanovskiy, V.Romero Lamas, M.Romero Vidal, A.Roth, J. D.Rotondo, M.Rudolph, M. S.Ruf, T.Ruiz Fernandez, R. A.Ruiz Vidal, J.Ryzhikov, A.Ryzka, J.Saborido Silva, J. J.Sagidova, N.Sahoo, N.Saitta, B.Salomoni, M.Sanchez Gras, C.Sanderswood, I.Santacesaria, R.Santamarina Rios, C.Santimaria, M.Santovetti, E.Saranin, D.Sarpis, G.Sarpis, M.Sarti, A.Satriano, C.Satta, A.Saur, M.Savrina, D.Sazak, H.Scantlebury Smead, L. G.Scarabotto, A.Schael, S.Scherl, S.Schiller, M.Schindler, H.Schmelling, M.Schmidt, B.Schmitt, S.Schneider, O.Schopper, A.Schubiger, M.Schulte, S.Schune, M. H.Schwemmer, R.Sciascia, B.Sciuccati, A.Sellam, S.Semennikov, A.Senghi Soares, M.Sergi, A.Serra, N.Sestini, L.Seuthe, A.Shang, Y.Shangase, D. M.Shapkin, M.Shchemerov, I.Shchutska, L.Shears, T.Shekhtman, L.Shen, Z.Sheng, S.Shevchenko, V.Shi, B.Shields, E. B.Shimizu, Y.Shmanin, E.Shorkin, R.Shupperd, J. 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Source
Journal of High Energy Physics. 2023(7)
Subject
Branching fraction
Hadron-Hadron Scattering
Language
English
ISSN
1029-8479
Abstract
Abstract: The first observation of the Bs0BBs0→D∗+D∗−BB0→D∗+D∗−=0.269±0.032±0.011±0.008,Bs0BBs0→D∗+D∗−=2.15±0.26±0.09±0.06±0.16×10−4,Bs0Bs0→ D∗+D∗− decay and the measurement of its branching ratio relative to the B0→ D∗+D∗− decay are presented. The data sample used corresponds to an integrated luminosity of 9 fb−1 of proton-proton collisions recorded by the LHCb experiment at centre-of-mass energies of 7, 8 and 13 TeV between 2011 and 2018. The decay is observed with more than 10 standard deviations and the time-integrated ratio of branching fractions is determined to beBs0BBs0→D∗+D∗−BB0→D∗+D∗−=0.269±0.032±0.011±0.008,Bs0BBs0→D∗+D∗−=2.15±0.26±0.09±0.06±0.16×10−4,Bs0Bs0where the first uncertainty is statistical, the second systematic and the third due to the uncertainty of the fragmentation fraction ratio fs/fd. The Bs0BBs0→D∗+D∗−BB0→D∗+D∗−=0.269±0.032±0.011±0.008,Bs0BBs0→D∗+D∗−=2.15±0.26±0.09±0.06±0.16×10−4,Bs0Bs0→ D*+D*− branching fraction is calculated to beBs0BBs0→D∗+D∗−BB0→D∗+D∗−=0.269±0.032±0.011±0.008,Bs0BBs0→D∗+D∗−=2.15±0.26±0.09±0.06±0.16×10−4,Bs0Bs0where the fourth uncertainty is due to the B0→ D*+D*− branching fraction. These results are calculated using the average Bs0BBs0→D∗+D∗−BB0→D∗+D∗−=0.269±0.032±0.011±0.008,Bs0BBs0→D∗+D∗−=2.15±0.26±0.09±0.06±0.16×10−4,Bs0Bs0 meson lifetime in simulation. Correction factors are reported for scenarios where either a purely heavy or a purely light Bs0BBs0→D∗+D∗−BB0→D∗+D∗−=0.269±0.032±0.011±0.008,Bs0BBs0→D∗+D∗−=2.15±0.26±0.09±0.06±0.16×10−4,Bs0Bs0 eigenstate is considered.