دورية أكاديمية

Evidence of a J / ψ K S 0 Structure in B 0 → J / ψ ϕ K S 0 Decays

التفاصيل البيبلوغرافية
العنوان: Evidence of a J / ψ K S 0 Structure in B 0 → J / ψ ϕ K S 0 Decays
المؤلفون: 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, Ajaltouni, Z, Akar, S, Akiba, K, Albicocco, P, 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, Bachiller Perea, I, 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, 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, Billoir, P, Biolchini, A, Birch, M, Bishop, F.C.R, Bitadze, A, Bizzeti, A, Blago, M.P, Blake, T, Blanc, F, Blank, J.E, 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, Calvi, M, Calvo Gomez, M, Campana, P, Campora Perez, D.H, Campoverde Quezada, A.F, Capelli, S, Capriotti, L, Carbone, A, Cardinale, R, Cardini, A, 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, Chahrour, I, 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, Cifra, P, Ciullo, G, Clarke, P.E.L, Clemencic, M, Cliff, H.V, Closier, J, Cobbledick, J.L, Coco, V, 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, 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 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, Eirea Orro, C, Eisenhardt, S, Ejopu, E, Ek-In, S, Eklund, L, Elashri, M, Ellbracht, J, 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, Feo, 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, Frontini, L, Fu, J, Fuehring, Q, Fulghesu, T, Gabriel, E, Galati, G, Galati, M.D, Gallas Torreira, A, Galli, D, Gambetta, S, 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, Hadjivasiliou, C, 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, Hemmer, F.H, 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, 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, Kolk, L, 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, Kulikova, E, Kupsc, A, Lacarrere, D, Lafferty, G, Lai, A, Lampis, A, Lancierini, D, Landesa Gomez, C, Lane, J.J, Lane, R, 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, R, Maccolini, S, Machefert, F, Maciuc, F, Mackay, I, Macko, V, 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, Manera Escalero, R, 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, Morello, G, Morello, M.J, Morgenthaler, M.P, 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, Nicotra, D, Niel, E.M, Nieswand, S, Nikitin, N, Nolte, N.S, Normand, C, Novoa Fernandez, J, Nowak, G, Nunez, C, Oblakowska-Mucha, A, Obraztsov, V, Oeser, T, 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.L, Pappenheimer, C, Parker, W, Parkes, C, Passalacqua, B, Passaleva, G, Pastore, A, Patel, M, Patrignani, C, Pawley, C.J, Pellegrino, A, Pepe Altarelli, M, Perazzini, S, Pereima, D, Pereiro Castro, A, Perret, P, Petridis, K, Petrolini, A, Petrov, A, Petrucci, S, Petruzzo, M, Pham, H, Philippov, A, Piandani, R, Pica, L, Piccini, M, Pietrzyk, B, Pietrzyk, G, Pili, M, Pinci, D, Pisani, F, Pizzichemi, M, Placinta, V, Plews, J, Plo Casasus, M, Polci, F, Poli Lener, M, Poluektov, A, Polukhina, N, Polyakov, I, Polycarpo, E, Ponce, S, Popov, D, Poslavskii, S, Prasanth, K, Promberger, L, Prouve, C, Pugatch, V, Puill, V, Punzi, G, Qi, H.R, Qian, W, Qin, N, Qu, S, Quagliani, R, Raab, N.V, Rachwal, B, Rademacker, J.H, Rajagopalan, R, Rama, M, Ramos Pernas, M, Rangel, M.S, Ratnikov, F, Raven, G, Rebollo de Miguel, M, Redi, F, Reich, J, Reiss, F, Remon Alepuz, C, Ren, Z, Resmi, P.K, Ribatti, R, Ricci, A.M, Ricciardi, S, Richardson, K, Richardson-Slipper, M, Rinnert, K, Robbe, P, Robertson, G, Rodrigues, A.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.D, Siddi, B.G, Silva Coutinho, R, Simi, G, Simone, S, Singla, M, Skidmore, N, Skuza, R, Skwarnicki, T, Slater, M.W, Smallwood, J.C, Smeaton, J.G, Smith, E, Smith, K, Smith, M, Snoch, A, Soares Lavra, L, Sokoloff, M.D, Soler, F.J.P, Solomin, A, Solovev, A, Solovyev, I, Song, R, Souza de Almeida, F.L, Souza de Paula, B, Spaan, B, Spadaro Norella, E, Spedicato, E, Spiridenkov, E, Spradlin, P, Sriskaran, V, Stagni, F, Stahl, M, Stahl, S, Stanislaus, S, Stein, E.N, Steinkamp, O, Stenyakin, O, Stevens, H, Stone, S, Strekalina, D, Su, Y, Suljik, F, Sun, J, Sun, L, Sun, Y, Svihra, P, Swallow, P.N, Swientek, K, Szabelski, A, Szumlak, T, Szymanski, M, Tan, Y, Taneja, S, Tat, M.D, Terentev, A, Teubert, F, Thomas, E, Thompson, D.J.D, Thomson, K.A, Tilquin, H, Tisserand, V, t'Jampens, S, Tobin, M, Tomassetti, L, Tonani, G, Tong, X, Torres Machado, D, Tou, D.Y, Trilov, S.M, Trippl, C, Tuci, G, Tuning, N, Ukleja, A, Unverzagt, D.J, Usachov, A, Ustyuzhanin, A, Uwer, U, Vagner, A, Vagnoni, V, Valassi, A, Valenti, G, Valls Canudas, N, van Dijk, M, van Hecke, H, van Herwijnen, E, van Hulse, C.B, van Veghel, M, Vazquez Gomez, R, Vazquez Regueiro, P, Vázquez Sierra, C, Vecchi, S, Velthuis, J.J, Veltri, M, Venkateswaran, A, Veronesi, M, Vesterinen, M, Vieira, D, Vieites Diaz, M, Vilasis-Cardona, X, Vilella Figueras, E, Villa, A, Vincent, P, Volle, F.C, Vom Bruch, D, Vorobyev, A, Vorobyev, V, Voropaev, N, Vos, K, Vrahas, C, Walsh, J, Walton, E.J, Wan, G, Wang, C, Wang, G, Wang, J, Wang, M, Wang, R, Wang, X, Wang, Y, Wang, Z, Ward, J.A, Watson, N.K, Websdale, D, Wei, Y, Westhenry, B.D.C, White, D.J, Whitehead, M, Wiederhold, A.R, Wiedner, D, Wilkinson, G, Wilkinson, M.K, Williams, I, Williams, M, Williams, M.R.J, Williams, R, Wilson, F.F, Wislicki, W, Witek, M, Witola, L, Wong, C.P, Wormser, G, Wotton, S.A, Wu, H, Wu, J, Wyllie, K, Xiang, Z, Xie, Y, Xu, A, Xu, J, Xu, L, Xu, M, Xu, Q, Xu, Z, Yang, D, Yang, S, Yang, X, Yang, Y, Yang, Z, Yeomans, L.E, Yeroshenko, V, Yeung, H, Yin, H, Yu, J, Yuan, X, Zaffaroni, E, Zavertyaev, M, Zdybal, M, Zeng, M, Zhang, C, Zhang, D, Zhang, L, Zhang, S, Zhang, Y, Zhao, Y, Zharkova, A, Zhelezov, A, Zheng, Y, Zhou, T, Zhou, X, Zhou, Y, Zhovkovska, V, Zhu, X, Zhu, Z, Zhukov, V, Zou, Q, Zucchelli, S, Zuliani, D, Zunica, G
المساهمون: Laboratoire de Physique de Clermont (LPC), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)-Université Clermont Auvergne (UCA), Laboratoire de Physique Nucléaire et de Hautes Énergies (LPNHE (UMR_7585)), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS), Laboratoire de Physique des 2 Infinis Irène Joliot-Curie (IJCLab), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS), Centre de Physique des Particules de Marseille (CPPM), Aix Marseille Université (AMU)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Laboratoire Leprince-Ringuet (LLR), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-École polytechnique (X)-Centre National de la Recherche Scientifique (CNRS), Laboratoire d'Annecy de Physique des Particules (LAPP), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Savoie Mont Blanc (USMB Université de Savoie Université de Chambéry )-Centre National de la Recherche Scientifique (CNRS), LHCb
المصدر: Phys.Rev.Lett. ; https://hal.science/hal-04229673Test ; Phys.Rev.Lett., 2023, 131 (13), pp.131901. ⟨10.1103/PhysRevLett.131.131901⟩
بيانات النشر: HAL CCSD
سنة النشر: 2023
المجموعة: HAL Clermont Auvergne (Université Blaise Pascal Clermont-Ferrand / Université d'Auvergne)
مصطلحات موضوعية: isospin, symmetry, width, measured, p p, scattering, p p: colliding beams, isospin: symmetry, width: measured, p p: scattering, B0: hadronic decay, J/psi(3100), Phi(1020), K0(S), structure, intermediate state, mass spectrum: (J/psi(3100) K0(S)), mass: width, mass: measured, phantom, amplitude analysis, TeV, statistical, LHC-B, CERN LHC Coll, error: statistical, data analysis method, experimental results, B0 --> J/psi(3100) Phi(1020) K0(S), 7000 GeV-cms
الوصف: International audience ; An amplitude analysis of B 0 → J / ψ ϕ K S 0 decays is performed using proton-proton collision data, corresponding to an integrated luminosity of 9 fb - 1 , collected with the LHCb detector at center-of-mass energies of 7, 8, and 13 TeV. Evidence with a significance of 4.0 standard deviations of a structure in the J / ψ K S 0 system, named T ψ s 1 θ ( 4000 ) 0 , is seen, with its mass and width measured to be 3991 - 10 + 12 - 17 + 9 MeV / c 2 and 105 - 25 + 29 - 23 + 17 MeV , respectively, where the first uncertainty is statistical and the second systematic. The T ψ s 1 θ ( 4000 ) 0 state is likely to be the isospin partner of the T ψ s 1 θ ( 4000 ) + state, previously observed in the J / ψ K + system of the B + → J / ψ ϕ K + decay. When isospin symmetry for the charged and neutral T ψ s 1 θ ( 4000 ) states is assumed, the signal significance increases to 5.4 standard deviations.
نوع الوثيقة: article in journal/newspaper
اللغة: English
العلاقة: info:eu-repo/semantics/altIdentifier/arxiv/2301.04899; hal-04229673; https://hal.science/hal-04229673Test; ARXIV: 2301.04899; INSPIRE: 2703387
DOI: 10.1103/PhysRevLett.131.131901
الإتاحة: https://doi.org/10.1103/PhysRevLett.131.131901Test
https://hal.science/hal-04229673Test
رقم الانضمام: edsbas.516D058B
قاعدة البيانات: BASE