A model-independent measurement of the CKM angle γ in the decays B± → [K+K−π+π−]Dh± and B± → [π+π−π+π−]Dh± (h = K, π)
R Aaij, ASW Abdelmotteleb, C Abellan Beteta, F Abudinén, T Ackernley, A. A. Adefisoye, B Adeva, M Adinolfi, P Adlarson, C Agapopoulou, CA Aidala, Z Ajaltouni, S. Akar, K Akiba, P Albicocco, J Albrecht, R Aleksiejunas, F Alessio, Z Aliouche, P Alvarez Cartelle, R Amalric, S Amato, JL Amey, Y Amhis, D Bacher, I Bachiller Perea, S Bachmann, M Bachmayer, JJ Back, V. Balagura, A Balboni, L Balzani, H Bao, J Baptista de Souza Leite, Ir. Diana Barbosa, RJ Barlow, M Barnyakov, S Barsuk, W Barter, J Bartz, S. Bashir, B Batsukh, P.B. Battista, A Bay, A Beck, M Becker, F Bedeschi, I.B. Bediaga, N.A. Behling, S Belin, K Belous, I. Belov, I Belyaev, G. Benane, G Bencivenni, E Ben-Haim, A Berezhnoy, R Bernet, S Bernet Andres, A Bertolin, C Betancourt, F Betti, J Bex, Ia Bezshyiko, O Bezshyyko, J. Bhom, MS Bieker, N. V. Biesuz, A. Biolchini, M Birch, Fcr Bishop, A Bitadze, A Bizzeti, T Blake, F Blanc, J.E. Blank, S Blusk, V Bocharnikov, J. A. Boelhauve, O Boente Garcia, T Boettcher, A Boldyrev, C.S. Bolognani, R Bolzonella, R.B. Bonacci, A Bordelius, F Borgato, S Borghi, M Borsato, JT Borsuk, E Bottalico, SA Bouchiba, M Bovill, TJV Bowcock, A Boyer, C. Bozzi, J. D. Brandenburg, A Brea Rodriguez, N Breer, J Brodzicka, A Brossa Gonzalo, J Brown, E Buchanan, L Buonincontri, A. T. Burke, C Burr, JS Butter, J Buytaert, W Byczynski, S Cadeddu, H Cai, Y Cai, A Caillet, R Calabrese, S Calderon Ramirez, L Calefice, S Cali, M Calvi, M Calvo Gomez, P Camargo Magalhaes, JI Cambon Bouzas, P. Campana, DH Campora Perez, A. F. Campoverde Quezada, S Capelli, L Capriotti, R Caravaca-Mora, A Carbone, L Carcedo Salgado, R. Cardinale, A Cardini, P. Carniti, L Carus, R Caspary, M Cattaneo, G Cavallero, V. Cavallini, S Celani, S Cesare, A. J. Chadwick, Ibrahim Chahrour, H Chang, M Charles, E Chatzianagnostou, R Cheaib, M Chefdeville, C Chen, J Chen, S Chen, Z Chen, M Cherif, A Chernov, S Chernyshenko, V Chobanova, M. Chrzaszcz, A Chubykin, V Chulikov, P Ciambrone, X Cid Vidal, G Ciezarek, P Cifra, M Clemencic, HV Cliff, J Closier, C Cocha Toapaxi, V Coco, J Cogan, E Cogneras, L Cojocariu, S Collaviti, P Collins, T Colombo, A Comerma-Montells, L Congedo, J Connaughton, Noah C.A. Cooke, C Coronel, A Correia, G Corti, J Cottee Meldrum, B Couturier, D. C. Craik, M Cruz Torres, R Currie, CL Da Silva, L Dai, X Dai, E Dall’Occo, C D’Ambrosio, J Daniel, P d’Argent, G Darze, A Davidson, Davies Je, O De Aguiar Francisco, Carmine De Angelis, F De Benedetti, J de Boer, K De Bruyn, S. De Capua, M De Cian, U De Freitas Carneiro Da Graca, JM De Miranda, L De Paula, M De Serio, P De Simone, F De Vellis, J. A. de Vries, F Debernardis, D. Decamp, S Dekkers, L Del Buono, B Delaney, J Deng, V Denysenko, O Deschamps, F Dettori, B Dey, P Di Nezza, S Didenko, S Ding, Y Ding, Lucas Dittmann, V Dobishuk, A. D. Docheva, A Doheny, C Dong, A. M. Donohoe, AC dos Reis, A. D. Dowling, W Duan, P Duda, MW Dudek, L Dufour, P. Durante, M.M. Duras, JM Durham, O.D. Durmus, S Easo, E Eckstein, U Egede, A Egorychev, V Egorychev, S Eisenhardt, E Ejopu, J Ellbracht, S. Ely, A Ene, J Eschle, S Esen, T Evans, F Fabiano, S Faghih, L.N. Falcao, B. Fang, R. Fantechi, L. Fantini, M. Faria, K Farmer, D Fazzini, L Felkowski, Miao Feng, M. Féo, A Fernandez Casani, M Fernandez Gomez, A. D. Fernez, F Ferrari, F Ferreira Rodrigues, M Ferro-Luzzi, S Filippov, R. A. Fini, M Fiorini, M Firlej, KL Fischer, D. S. Fitzgerald, C Fitzpatrick, T Fiutowski, F Fleuret, A Fomin, M Fontana, L.F. Foreman, R Forty, D Foulds-Holt, V Franco Lima, M Franco Sevilla, M Frank, E Franzoso, G Frau, D. A. Friday, J Fu, Q Führing, T Fulghesu, MD Galati, A Gallas Torreira, D Galli, S Gambetta, M Gandelman, P. Gandini, B Ganie, H Gao, Robert X. Gao, Gao Tq, Y Gao, P. Garcia Moreno, J García Pardiñas, P Gardner, K.G. Garg, L. Garrido, C Gaspar, L. L. Gerken, E Gersabeck, M Gersabeck, T Gershon, S Ghizzo, Z Ghorbanimoghaddam, L Giambastiani, F. I. Giasemis, V Gibson, H. K. Giemza, A. L. Gilman, M Giovannetti, A Gioventù, M. A. Giza, F. C. Glaser, VV Gligorov, Cornelia Göbel, L Golinka-Bezshyyko, E. Golobardes, D Golubkov, A. Golutvin, S Gomez Fernandez, W Gomulka, I Gonçales Vaz, F Goncalves Abrantes, G Gong, J.A. Gooding, I.V. Gorelov, E Govorkova, J.P. Grabowski, E Graugés, E Graverini, L Grazette, G Graziani, A. T. Grecu, LM Greeven, NA Grieser, L Grillo, S Gromov, C Gu, M Guarise, L Guerry, V. Guliaeva, P.A. Günther, A.-K. Guseinov, E Gushchin, Y Guz, T Gys, K Habermann, T Hadavizadeh, C Hadjivasiliou, C Haen, S Haken, G Hallett, PM Hamilton, J Hammerich, Q Han, X Han, S Hansmann-Menzemer, L Hao, N Harnew, T. H. Harris, M Hartmann, Syed Hashmi, J He, A Hedes, F Hemmer, C Henderson, R Henderson, RDL Henderson, A. M. Hennequin, K Hennessy, L Henry, J Herd, J Heuel, A Hicheur, G Hijano Mendizabal, J Horswill, R Hou, Y Hou, D. C. Houston, N Howarth, J Hu, W Hu, X Hu, W Hulsbergen, RJ Hunter, M Hushchyn, D Hutchcroft, M Idzik, D Ilin, A Iniukhin, A Ishteev, K Ivshin, H Jage, S Jakobsen, E. Jans, B. K. Jashal, A Jawahery, Chanka Jayaweera, V Jevtic, Z Jia, E Jiang, X Jiang, Y Jiang, Y.J. Jiang, E Jimenez Moya, Naresh Jindal, M John, A John Rubesh Rajan, D Johnson, C. R. Jones, S Joshi, B Jost, N. Jurik, I Juszczak, D Kaminaris, S Kandybei, M Kane, Y Kang, M Karacson, A Kauniskangas, JW Kautz, M.K. Kazanecki, F Keizer, M Kenzie, T. Ketel, B Khanji, A Kharisova, G Khreich, VS Kirsebom, O Kitouni, S Klaver, N Kleijne, K Klimaszewski, MR Kmiec, S Koliiev, L Kolk, A Konoplyannikov, P Kopciewicz, P Koppenburg, A Korchin, M Korolev, Ivan Kostiuk, O Kot, S Kotriakhova, E Kowalczyk, A Kozachuk, P Kravchenko, L Kravchuk, O Kravcov, Michel Kreps, P Krokovny, W Krupa, W Krzemien, O Kshyvanskyi, S Kubis, M Kucharczyk, V Kudryavtsev, E Kulikova, A Kupsc, V Kushnir, B Kutsenko, I Kyryllin, A Lai, Andrea Lampis, D Lancierini, C Landesa Gomez, J. J. Lane, G Lanfranchi, C Langenbruch, J Langer, O Lantwin, T Latham, C Lazzeroni, R Le Gac, H Lee, R Lefèvre, A Leflat, S Legotin, M Lehuraux, O Leroy, T Lesiak, E. D. Lesser, B Leverington, A Li, C Li, H Li, J Li, K Li, L Li, M Li, P Li, P-R Li, Q Li, T Li, Y Li, Z Lian, Q Liang, X Liang, S Libralon, A. L. Lightbody, C Lin, T Lin, R Lindner, H Linton, R Litvinov, D Liu, F. L. Liu, G Liu, K Liu, S Liu, W Liu, Y Liu, YL Liu, A Lobo Salvia, Angela Loi, T Long, F.C.L. Lopes, JH Lopes, A Lopez Huertas, C Lopez Iribarnegaray, S López Soliño, Q Lu, Carla Lucarelli, D Lucchesi, M Lucio Martinez, Y Luo, E Luppi, K Lynch, X.-R. Lyu, G. M. Ma, S Maccolini, F Machefert, F. Maciuc, B Mack, I Mackay, L. M. Mackey, L. R. Madhan Mohan, M. J. Madurai, Daniel Magdalinski, D Maisuzenko, J. J. Malczewski, S Malde, L. Malentacca, A Malinin, G Manca, G Mancinelli, C Mancuso, R Manera Escalero, F. M. Manganella, D Manuzzi, JF Marchand, R. Marchevski, U. Marconi, E Mariani, S Mariani, J Marks, A. M. Marshall, L Martel, G Martelli, G Martellotti, M Martinelli, D Martinez Gomez, D Martinez Santos, F Martinez Vidal, A Massafferri, A Mathad, V Matiunin, C Matteuzzi, K. R. Mattioli, A Mauri, E. Maurice, J Mauricio, P Mayencourt, M Mazurek, M McCann, TH Mcgrath, N.T. McHugh, A. McNab, R McNulty, B Meadows, G Meier, D Melnychuk, D Mendoza Granada, F. M. Meng, M Merk, A Merli, D Miao, Hui Miao, M Mikhasenko, D. A. Milanes, A Minotti, E. Minucci, T. Miralles, B Mitreska, D. S. 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Résumé fourni par la source
A bstract A model-independent determination of the CKM angle γ is presented, using the B ± → [ K + K − π + π − ] D h ± and B ± → [ π + π − π + π − ] D h ± decays, with h = K, π . This measurement is the first phase-space binned study of these decay modes, and uses a sample of proton-proton collision data collected by the LHCb experiment, corresponding to an integrated luminosity of 9 fb − 1 . The phase-space bins are optimised for sensitivity to γ , and in each bin external inputs from the BESIII experiment are used to constrain the charm strong-phase parameters. The result of this binned analysis is $$ \gamma ={\left(53.{9}_{-8.9}^{+9.5}\right)}^{{}^{\circ}} $$ γ = 53 . 9 − 8.9 + 9.5 ° , where the uncertainty includes both statistical and systematic contributions. Furthermore, when combining with existing phase-space integrated measurements of the same decay modes, a value of $$ \gamma ={\left(52.{6}_{-6.4}^{+8.5}\right)}^{{}^{\circ}} $$ γ = 52 . 6 − 6.4 + 8.5 ° is obtained, which is one of the most precise determinations of γ to date.
Ce résumé expose les affirmations des auteurs. BNTIC ne l’interprète pas comme une validation indépendante des résultats.