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17 results on '"Vries, JA De"'

1. Observation of the suppressed $Λ_b^0\to D p K^-$ decay with $D\to K^+ π^-$ and measurement of its $C\!P$ asymmetry

Author: collaboration, LHCb, Aaij, R, Abdelmotteleb, ASW, Beteta, C Abellán, Gallego, FJ Abudinen, Ackernley, T, Adeva, B, Adinolfi, M, Afsharnia, H, Agapopoulou, C, Aidala, CA, Aiola, S, Ajaltouni, Z, Akar, S, Albrecht, J, Alessio, F, Alexander, M, Albero, A Alfonso, Aliouche, Z, Alkhazov, G, Cartelle, P Alvarez, Amato, S, Amey, JL, Amhis, Y, An, L, Anderlini, L, Andreianov, A, Andreotti, M, Archilli, F, Artamonov, A, Artuso, M, Arzymatov, K, Aslanides, E, Atzeni, M, Audurier, B, Bachmann, S, Bachmayer, M, Back, JJ, Rodriguez, P Baladron, Balagura, V, Baldini, W, Leite, J Baptista, Barbetti, M, Barlow, RJ, Barsuk, S, Barter, W, Bartolini, M, Baryshnikov, F, Basels, JM, Bashir, S, Bassi, G, Batsukh, B, Battig, A, Bay, A, Beck, A, Becker, M, Bedeschi, F, Bediaga, I, Beiter, A, Belavin, V, Belin, S, Bellee, V, Belous, K, Belov, I, Belyaev, I, Bencivenni, G, Ben-Haim, E, Berezhnoy, A, Bernet, R, Berninghoff, D, Bernstein, HC, Bertella, C, Bertolin, A, Betancourt, C, Betti, F, Bezshyiko, Ia, Bhasin, S, Bhom, J, Bian, L, Bieker, MS, Bifani, S, Billoir, P, Birch, M, Bishop, FCR, Bitadze, A, Bizzeti, A, Bjørn, M, Blago, MP, Blake, T, Blanc, F, Blusk, S, Bobulska, D, Boelhauve, JA, Garcia, O Boente, Boettcher, T, Boldyrev, A, Bondar, A, Bondar, N, Borghi, S, Borisyak, M, Borsato, M, Borsuk, JT, Bouchiba, SA, Bowcock, TJV, Boyer, A, Bozzi, C, Bradley, MJ, Braun, S, Rodriguez, A Brea, Brodski, M, Brodzicka, J, Gonzalo, A Brossa, Brundu, D, Buonaura, A, Buonincontri, L, Burke, AT, Burr, C, Bursche, A, Butkevich, A, Butter, JS, Buytaert, J, Byczynski, W, Cadeddu, S, Cai, H, Calabrese, R, Calefice, L, Diaz, L Calero, Cali, S, Calladine, R, Calvi, M, Gomez, M Calvo, Magalhaes, P Camargo, Campana, P, Quezada, AF Campoverde, Capelli, S, Capriotti, L, Carbone, A, Carboni, G, Cardinale, R, Cardini, A, Carli, I, Carniti, P, Carus, L, Akiba, K Carvalho, Vidal, A Casais, Casse, G, Cattaneo, M, Cavallero, G, Celani, S, Cerasoli, J, Cervenkov, D, Chadwick, AJ, Chapman, MG, Charles, M, Charpentier, Ph, Chatzikonstantinidis, G, Barajas, CA Chavez, Chefdeville, M, Chen, C, Chen, S, Chernov, A, Chobanova, V, Cholak, S, Chrzaszcz, M, Chubykin, A, Chulikov, V, Ciambrone, P, Cicala, MF, Vidal, X Cid, Ciezarek, G, Clarke, PEL, Clemencic, M, Cliff, HV, Closier, J, Cobbledick, JL, Coco, V, Coelho, JAB, Cogan, J, Cogneras, E, Cojocariu, L, Collins, P, Colombo, T, Congedo, L, Contu, A, Cooke, N, Coombs, G, Corredoira, I, Corti, G, Sobral, CM Costa, Couturier, B, Craik, DC, Crkovská, J, Torres, M Cruz, Currie, R, Silva, CL Da, Dadabaev, S, Dai, L, Dall'Occo, E, Dalseno, J, D'Ambrosio, C, Danilina, A, d'Argent, P, Davies, JE, Davis, A, Francisco, O De Aguiar, Bruyn, K De, Capua, S De, Cian, M De, Miranda, JM De, Paula, L De, Serio, M De, Simone, D De, Simone, P De, Vries, JA de, Dean, CT, Decamp, D, Dedu, V, Buono, L Del, Delaney, B, Dembinski, H-P, Dendek, A, Denysenko, V, Derkach, D, Deschamps, O, Desse, F, Dettori, F, Dey, B, Cicco, A Di, Nezza, P Di, Didenko, S, Maronas, L Dieste, Dijkstra, H, Dobishuk, V, Dong, C, Donohoe, AM, Dordei, F, Reis, AC dos, Douglas, L, Dovbnya, A, Downes, AG, Dudek, MW, Dufour, L, Duk, V, Durante, P, Durham, JM, Dutta, D, Dziurda, A, Dzyuba, A, Easo, S, Egede, U, Egorychev, V, Eidelman, S, Eisenhardt, S, Ek-In, S, Eklund, L, Ely, S, Ene, A, Epple, E, Escher, S, Eschle, J, Esen, S, Evans, T, Falabella, A, Fan, J, Fan, Y, Fang, B, Farry, S, Fazzini, D, Féo, M, Prieto, A Fernandez, Fernez, AD, Ferrari, F, Lopes, L Ferreira, Rodrigues, F Ferreira, Sole, S Ferreres, Ferrillo, M, Ferro-Luzzi, M, Filippov, S, Fini, RA, Fiorini, M, Firlej, M, Fischer, KM, Fitzgerald, DS, Fitzpatrick, C, Fiutowski, T, Fkiaras, A, Fleuret, F, Fontana, M, Fontanelli, F, Forty, R, Foulds-Holt, D, Lima, V Franco, Sevilla, M Franco, Frank, M, Franzoso, E, Frau, G, Frei, C, Friday, DA, Fu, J, Fuehring, Q, Gabriel, E, Torreira, A Gallas, Galli, D, Gambetta, S, Gan, Y, Gandelman, M, Gandini, P, Gao, Y, Garau, M, Martin, LM Garcia, Moreno, P Garcia, Pardiñas, J García, Plana, B Garcia, Rosales, FA Garcia, Garrido, L, Gaspar, C, Geertsema, RE, Gerick, D, Gerken, LL, Gersabeck, E, Gersabeck, M, Gershon, T, Gerstel, D, Ghez, Ph, Giambastiani, L, Gibson, V, Giemza, HK, Gilman, AL, Giovannetti, M, Gioventù, A, Gironell, P Gironella, Giubega, L, Giugliano, C, Gizdov, K, Gkougkousis, EL, Gligorov, VV, Göbel, C, Golobardes, E, Golubkov, D, Golutvin, A, Gomes, A, Fernandez, S Gomez, Abrantes, F Goncalves, Goncerz, M, Gong, G, Gorbounov, P, Gorelov, IV, Gotti, C, Govorkova, E, Grabowski, JP, Grammatico, T, Cardoso, LA Granado, Graugés, E, Graverini, E, Graziani, G, Grecu, A, Greeven, LM, Grieser, NA, Grillo, L, Gromov, S, Cazon, BR Gruberg, Gu, C, Guarise, M, Guittiere, M, Günther, PA, Gushchin, E, Guth, A, Guz, Y, Gys, T, Hadavizadeh, T, Haefeli, G, Haen, C, Haimberger, J, Halewood-leagas, T, Hamilton, PM, Hammerich, JP, Han, Q, Han, X, Hancock, TH, Hansmann-Menzemer, S, Harnew, N, Harrison, T, Hasse, C, Hatch, M, He, J, Hecker, M, Heijhoff, K, Heinicke, K, Hennequin, AM, Hennessy, K, Henry, L, Heuel, J, Hicheur, A, Hill, D, Hilton, M, Hollitt, SE, Hou, R, Hou, Y, Hu, J, Hu, W, Hu, X, Huang, W, Huang, X, Hulsbergen, W, Hunter, RJ, Hushchyn, M, Hutchcroft, D, Hynds, D, Ibis, P, Idzik, M, Ilin, D, Ilten, P, Inglessi, A, Ishteev, A, Ivshin, K, Jacobsson, R, Jage, H, Jakobsen, S, Jans, E, Jashal, BK, Jawahery, A, Jevtic, V, Jiang, F, John, M, Johnson, D, Jones, CR, Jones, TP, Jost, B, Jurik, N, Kadavath, SH Kalavan, Kandybei, S, Kang, Y, Karacson, M, Karpov, M, Keizer, F, Keller, DM, Kenzie, M, Ketel, T, Khanji, B, Kharisova, A, Kholodenko, S, Kirn, T, Kirsebom, VS, Kitouni, O, Klaver, S, Kleijne, N, Klimaszewski, K, Kmiec, MR, Koliiev, S, Kondybayeva, A, Konoplyannikov, A, Kopciewicz, P, Kopecna, R, Koppenburg, P, Korolev, M, Kostiuk, I, Kot, O, Kotriakhova, S, Kravchenko, P, Kravchuk, L, Krawczyk, RD, Kreps, M, Kress, F, Kretzschmar, S, Krokovny, P, Krupa, W, Krzemien, W, Kucharczyk, M, Kudryavtsev, V, Kuindersma, HS, Kunde, GJ, Kvaratskheliya, T, Lacarrere, D, Lafferty, G, Lai, A, Lampis, A, Lancierini, D, Lane, JJ, Lane, R, Lanfranchi, G, Langenbruch, C, Langer, J, Lantwin, O, Latham, T, Lazzari, F, Gac, R Le, Lee, SH, Lefèvre, R, Leflat, A, Legotin, S, Leroy, O, Lesiak, T, Leverington, B, Li, H, Li, P, Li, S, Li, Y, Li, Z, Liang, X, Lin, T, Lindner, R, Lisovskyi, V, Litvinov, R, Liu, G, Liu, H, Liu, Q, Liu, S, Salvia, A Lobo, Loi, A, Castro, J Lomba, Longstaff, I, Lopes, JH, Solino, S Lopez, Lovell, GH, Lu, Y, Lucarelli, C, Lucchesi, D, Luchuk, S, Martinez, M Lucio, Lukashenko, V, Luo, Y, Lupato, A, Luppi, E, Lupton, O, Lusiani, A, Lyu, X, Ma, L, Ma, R, Maccolini, S, Machefert, F, Maciuc, F, Macko, V, Mackowiak, P, Maddrell-Mander, S, Madejczyk, O, Mohan, LR Madhan, Maev, O, Maevskiy, A, Maisuzenko, D, Majewski, MW, Malczewski, JJ, Malde, S, Malecki, B, Malinin, A, Maltsev, T, Malygina, H, Manca, G, Mancinelli, G, Manuzzi, D, Marangotto, D, Maratas, J, Marchand, JF, Marconi, U, Mariani, S, Benito, C Marin, Marinangeli, M, Marks, J, Marshall, AM, Marshall, PJ, Martelli, G, Martellotti, G, Martinazzoli, L, Martinelli, M, Santos, D Martinez, Vidal, F Martinez, Massafferri, A, Materok, M, Matev, R, Mathad, A, Mathe, Z, Matiunin, V, Matteuzzi, C, Mattioli, KR, Mauri, A, Maurice, E, Mauricio, J, Mazurek, M, McCann, M, Mcconnell, L, Mcgrath, TH, Mchugh, NT, McNab, A, McNulty, R, Mead, JV, Meadows, B, Meier, G, Meinert, N, Melnychuk, D, Meloni, S, Merk, M, Merli, A, Garcia, L Meyer, Mikhasenko, M, Milanes, DA, Millard, E, Milovanovic, M, Minard, M-N, Minotti, A, Minzoni, L, Mitchell, SE, Mitreska, B, Mitzel, DS, Mödden, A, Mohammed, RA, Moise, RD, Mokhnenko, S, Mombächer, T, Monroy, IA, Monteil, S, Morandin, M, Morello, G, Morello, MJ, Moron, J, Morris, AB, Morris, AG, Mountain, R, Mu, H, Muheim, F, Mulder, M, Müller, D, Müller, K, Murphy, CH, Murray, D, Muzzetto, P, Naik, P, Nakada, T, Nandakumar, R, Nanut, T, Nasteva, I, Needham, M, Neri, I, Neri, N, Neubert, S, Neufeld, N, Newcombe, R, Nguyen, TD, Nguyen-Mau, C, Niel, EM, Nieswand, S, Nikitin, N, Nolte, NS, Normand, C, Nunez, C, Oblakowska-Mucha, A, Obraztsov, V, Oeser, T, O'Hanlon, DP, Okamura, S, Oldeman, R, Oliva, F, Olivares, ME, Onderwater, CJG, O'Neil, RH, Goicochea, JM Otalora, Ovsiannikova, T, Owen, P, Oyanguren, A, Padeken, KO, Pagare, B, Pais, PR, Pajero, T, Palano, A, Palutan, M, Pan, Y, Panshin, G, Papanestis, A, Pappagallo, M, Pappalardo, LL, Pappenheimer, C, Parker, W, Parkes, C, Passalacqua, B, Passaleva, G, Pastore, A, Patel, M, Patrignani, C, Pawley, CJ, Pearce, A, Pellegrino, A, Altarelli, M Pepe, Perazzini, S, Pereima, D, Castro, A Pereiro, Perret, P, Petric, M, Petridis, K, Petrolini, A, Petrov, A, Petrucci, S, Petruzzo, M, Pham, TTH, Philippov, A, Pica, L, Piccini, M, Pietrzyk, B, Pietrzyk, G, Pili, M, Pinci, D, Pisani, F, Pizzichemi, M, Resmi, PK, Placinta, V, Plews, J, Casasus, M Plo, Polci, F, Lener, M Poli, Poliakova, M, Poluektov, A, Polukhina, N, Polyakov, I, Polycarpo, E, Ponce, S, Popov, D, Popov, S, Poslavskii, S, Prasanth, K, Promberger, L, Prouve, C, Pugatch, V, Puill, V, Pullen, H, Punzi, G, Qi, H, Qian, W, Qin, J, Qin, N, Quagliani, R, Quintana, B, Raab, NV, Trejo, RI Rabadan, Rachwal, B, Rademacker, JH, Rama, M, Pernas, M Ramos, Rangel, MS, Ratnikov, F, Raven, G, Reboud, M, Redi, F, Reiss, F, Alepuz, C Remon, Ren, Z, Renaudin, V, Ribatti, R, Ricciardi, S, Rinnert, K, Robbe, P, Robertson, G, Rodrigues, AB, Rodrigues, E, Lopez, JA Rodriguez, Rodriguez, ERR Rodriguez, Roehrken, M, Rollings, A, Roloff, P, Romanovskiy, V, Lamas, M Romero, Vidal, A Romero, Roth, JD, Rotondo, M, Rudolph, MS, Ruf, T, Fernandez, RA Ruiz, Vidal, J Ruiz, Ryzhikov, A, Ryzka, J, Silva, JJ Saborido, Sagidova, N, Sahoo, N, Saitta, B, Salomoni, M, Gras, C Sanchez, Santacesaria, R, Rios, C Santamarina, Santimaria, M, Santovetti, E, Saranin, D, Sarpis, G, Sarpis, M, Sarti, A, Satriano, C, Satta, A, Saur, M, Savrina, D, Sazak, H, Smead, LG Scantlebury, 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, MH, Schwemmer, R, Sciascia, B, Sellam, S, Semennikov, A, Soares, M Senghi, Sergi, A, Serra, N, Sestini, L, Seuthe, A, Shang, Y, Shangase, DM, Shapkin, M, Shchemerov, I, Shchutska, L, Shears, T, Shekhtman, L, Shen, Z, Shevchenko, V, Shields, EB, Shimizu, Y, Shmanin, E, Shupperd, JD, Siddi, BG, Coutinho, R Silva, Simi, G, Simone, S, Sirks, E, Skidmore, N, Skwarnicki, T, Slater, MW, Slazyk, I, Smallwood, JC, Smeaton, JG, Smetkina, A, Smith, E, Smith, M, Snoch, A, Soares, M, Lavra, L Soares, Sokoloff, MD, Soler, FJP, Solovev, A, Solovyev, I, Almeida, FL Souza De, Paula, B Souza De, Spaan, B, Norella, E Spadaro, Spradlin, P, Stagni, F, Stahl, M, Stahl, S, Stanislaus, S, Steinkamp, O, Stenyakin, O, Stevens, H, Stone, S, Straticiuc, M, Strekalina, D, Suljik, F, Sun, J, Sun, L, Sun, Y, Svihra, P, Swallow, PN, Swientek, K, Szabelski, A, Szumlak, T, Szymanski, M, Taneja, S, Tanner, AR, Tat, MD, Terentev, A, Teubert, F, Thomas, E, Thompson, DJD, Thomson, KA, Tisserand, V, T'Jampens, S, Tobin, M, Tomassetti, L, Tong, X, Machado, D Torres, Tou, DY, Tran, MT, Trifonova, E, Trippl, C, Tuci, G, Tully, A, Tuning, N, Ukleja, A, Unverzagt, DJ, Ursov, E, Usachov, A, Ustyuzhanin, A, Uwer, U, Vagner, A, Vagnoni, V, Valassi, A, Valenti, G, Canudas, N Valls, Beuzekom, M van, Dijk, M Van, Herwijnen, E van, Hulse, CB Van, Veghel, M van, Gomez, R Vazquez, Regueiro, P Vazquez, Sierra, C Vázquez, Vecchi, S, Velthuis, JJ, Veltri, M, Venkateswaran, A, Veronesi, M, Vesterinen, M, Vieira, D, Diaz, M Vieites, Viemann, H, Vilasis-Cardona, X, Figueras, E Vilella, Villa, A, Vincent, P, Volle, FC, Bruch, D Vom, Vorobyev, A, Vorobyev, V, Voropaev, N, Vos, K, Waldi, R, Walsh, J, Wang, C, Wang, J, Wang, M, Wang, R, Wang, Y, Wang, Z, Ward, JA, Watson, NK, Weber, SG, Websdale, D, Weisser, C, Westhenry, BDC, White, DJ, Whitehead, M, Wiederhold, AR, Wiedner, D, Wilkinson, G, Wilkinson, M, Williams, I, Williams, M, Williams, MRJ, Wilson, FF, Wislicki, W, Witek, M, Witola, L, Wormser, G, Wotton, SA, Wu, H, Wyllie, K, Xiang, Z, Xiao, D, Xie, Y, Xu, A, Xu, J, Xu, L, Xu, M, Xu, Q, Xu, Z, Yang, D, Yang, S, Yang, Y, Yang, Z, Yao, Y, Yeomans, LE, Yin, H, Yu, J, Yuan, X, Yushchenko, O, Zaffaroni, E, Zavertyaev, M, Zdybal, M, Zenaiev, O, Zeng, M, Zhang, D, Zhang, L, Zhang, S, Zhang, Y, Zharkova, A, Zhelezov, A, Zheng, Y, Zhou, T, Zhou, X, Zhou, Y, Zhovkovska, V, Zhu, X, Zhu, Z, Zhukov, V, Zonneveld, JB, Zou, Q, Zucchelli, S, Zuliani, D, and Zunica, G
Subjects: High Energy Physics::Phenomenology, High Energy Physics::Experiment
Abstract: A study of $\Lambda_b^0$ baryon decays to the $DpK^-$ final state is presented based on a proton-proton collision data sample corresponding to an integrated luminosity of 9 fb$^{-1}$ collected with the LHCb detector. Two $\Lambda_b^0$ decays are considered, $\Lambda_b^0\to DpK^-$ with $D\to K^-\pi^+$ and $D\to K^+\pi^-$, where $D$ represents a superposition of $D^0$ and $\overline{D}^0$ states. The latter process is expected to be suppressed relative to the former, and is observed for the first time. The ratio of branching fractions of the two decays is measured, and the $C\!P$ asymmetry of the suppressed mode, which is sensitive to the CKM angle $\gamma$, is also reported.
Published: 2021

2. Measurement of prompt charged-particle production in pp collisions at a centre-of-mass energy of 13 TeV

Author: Collaboration, LHCb, Aaij, R, Beteta, C Abellán, Ackernley, T, Adeva, B, Adinolfi, M, Afsharnia, H, Aidala, CA, Aiola, S, Ajaltouni, Z, Akar, S, Alasfar, L, Albrecht, J, Alessio, F, Alexander, M, Albero, A Alfonso, Aliouche, Z, Alkhazov, G, Cartelle, P Alvarez, Amato, S, Amhis, Y, An, L, Anderlini, L, Andreianov, A, Andreotti, M, Archilli, F, Artamonov, A, Artuso, M, Arzymatov, K, Aslanides, E, Atzeni, M, Audurier, B, Bachmann, S, Bachmayer, M, Back, JJ, Rodriguez, P Baladron, Balagura, V, Baldini, W, Leite, J Baptista, Barlow, RJ, Barsuk, S, Barter, W, Bartolini, M, Baryshnikov, F, Basels, JM, Bassi, G, Batsukh, B, Battig, A, Bay, A, Becker, M, Bedeschi, F, Bediaga, I, Beiter, A, Belavin, V, Belin, S, Bellee, V, Belous, K, Belov, I, Belyaev, I, Bencivenni, G, Ben-Haim, E, Berezhnoy, A, Bernet, R, Berninghoff, D, Bernstein, HC, Bertella, C, Bertolin, A, Betancourt, C, Betti, F, Bezshyiko, Ia, Bhasin, S, Bhom, J, Bian, L, Bieker, MS, Bifani, S, Billoir, P, Birch, M, Bishop, FCR, Bitadze, A, Bizzeti, A, Bjørn, M, Blago, MP, Blake, T, Blanc, F, Blusk, S, Bobulska, D, Boelhauve, JA, Garcia, O Boente, Boettcher, T, Boldyrev, A, Bondar, A, Bondar, N, Borghi, S, Borisyak, M, Borsato, M, Borsuk, JT, Bouchiba, SA, Bowcock, TJV, Boyer, A, Bozzi, C, Bradley, MJ, Braun, S, Rodriguez, A Brea, Brodski, M, Brodzicka, J, Gonzalo, A Brossa, Brundu, D, Buonaura, A, Burr, C, Bursche, A, Butkevich, A, Butter, JS, Buytaert, J, Byczynski, W, Cadeddu, S, Cai, H, Calabrese, R, Calefice, L, Diaz, L Calero, Cali, S, Calladine, R, Calvi, M, Gomez, M Calvo, Magalhaes, P Camargo, Campana, P, Quezada, AF Campoverde, Capelli, S, Capriotti, L, Carbone, A, Carboni, G, Cardinale, R, Cardini, A, Carli, I, Carniti, P, Carus, L, Akiba, K Carvalho, Vidal, A Casais, Casse, G, Cattaneo, M, Cavallero, G, Celani, S, Cerasoli, J, Chadwick, AJ, Chapman, MG, Charles, M, Charpentier, Ph, Chatzikonstantinidis, G, Barajas, CA Chavez, Chefdeville, M, Chen, C, Chen, S, Chernov, A, Chobanova, V, Cholak, S, Chrzaszcz, M, Chubykin, A, Chulikov, V, Ciambrone, P, Cicala, MF, Vidal, X Cid, Ciezarek, G, Clarke, PEL, Clemencic, M, Cliff, HV, Closier, J, Cobbledick, JL, Coco, V, Coelho, JAB, Cogan, J, Cogneras, E, Cojocariu, L, Collins, P, Colombo, T, Congedo, L, Contu, A, Cooke, N, Coombs, G, Corti, G, Sobral, CM Costa, Couturier, B, Craik, DC, Crkovská, J, Torres, M Cruz, Currie, R, Silva, CL Da, Dadabaev, S, Dall'Occo, E, Dalseno, J, D'Ambrosio, C, Danilina, A, D'Argent, P, Davis, A, Francisco, O De Aguiar, Bruyn, K De, Capua, S De, Cian, M De, Miranda, JM De, Paula, L De, Serio, M De, Simone, D De, Simone, P De, Vries, JA De, Dean, CT, Decamp, D, Buono, L Del, Delaney, B, Dembinski, H-P, Dendek, A, Denysenko, V, Derkach, D, Deschamps, O, Desse, F, Dettori, F, Dey, B, Cicco, A Di, Nezza, P Di, Didenko, S, Maronas, L Dieste, Dijkstra, H, Dobishuk, V, Donohoe, AM, Dordei, F, Reis, AC Dos, Douglas, L, Dovbnya, A, Downes, AG, Dreimanis, K, Dudek, MW, Dufour, L, Duk, V, Durante, P, Durham, JM, Dutta, D, Dziurda, A, Dzyuba, A, Easo, S, Egede, U, Egorychev, V, Eidelman, S, Eisenhardt, S, Ek-In, S, Eklund, L, Ely, S, Ene, A, Epple, E, Escher, S, Eschle, J, Esen, S, Evans, T, Falabella, A, Fan, J, Fan, Y, Fang, B, Farry, S, Fazzini, D, Féo, M, Prieto, A Fernandez, Arribas, JM Fernandez-Tenllado, Fernez, AD, Ferrari, F, Lopes, L Ferreira, Rodrigues, F Ferreira, Sole, S Ferreres, Ferrillo, M, Ferro-Luzzi, M, Filippov, S, Fini, RA, Fiorini, M, Firlej, M, Fischer, KM, Fitzgerald, DS, Fitzpatrick, C, Fiutowski, T, Fkiaras, A, Fleuret, F, Fontana, M, Fontanelli, F, Forty, R, Lima, V Franco, Sevilla, M Franco, Frank, M, Franzoso, E, Frau, G, Frei, C, Friday, DA, Fu, J, Fuehring, Q, Funk, W, Gabriel, E, Gaintseva, T, Torreira, A Gallas, Galli, D, Gambetta, S, Gan, Y, Gandelman, M, Gandini, P, Gao, Y, Garau, M, Martin, LM Garcia, Moreno, P Garcia, Pardiñas, J García, Plana, B Garcia, Rosales, FA Garcia, Garrido, L, Gaspar, C, Geertsema, RE, Gerick, D, Gerken, LL, Gersabeck, E, Gersabeck, 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Zucchelli, S, Zuliani, D, Zunica, G, Kenzie, Matthew [0000-0001-7910-4109], and Apollo - University of Cambridge Repository
Subjects: High Energy Physics - Experiment (hep-ex), hep-ex, Astrophysics::High Energy Astrophysical Phenomena, FOS: Physical sciences, High Energy Physics::Experiment, Nuclear Experiment, High Energy Physics - Experiment
Abstract: The differential cross-section of prompt inclusive production of long-lived charged particles in proton-proton collisions is measured using a data sample recorded by the LHCb experiment at a centre-of-mass energy of ${\sqrt{s} = 13\,\mathrm{TeV}}$. The data sample, collected with an unbiased trigger, corresponds to an integrated luminosity of ${5.4\,\mathrm{nb}^{-1}}$. The differential cross-section is measured as a function of transverse momentum and pseudorapidity in the ranges ${p_\mathrm{T} \in [0.08, 10)\,\mathrm{GeV}\,c^{-1}}$ and ${\eta \in [2.0, 4.8)}$ and is determined separately for positively and negatively charged particles. The results are compared with predictions from various hadronic-interaction models., Comment: All figures and tables, along with any supplementary material and additional information, are available at https://cern.ch/lhcbproject/Publications/p/LHCb-PAPER-2021-010.html (LHCb public pages)
Published: 2021

3. Search for the doubly charmed baryon $\itΩ_{cc}^{+}$

Author: Aaij, R, Beteta, C Abellán, Ackernley, T, Adeva, B, Adinolfi, M, Afsharnia, H, Aidala, CA, Aiola, S, Ajaltouni, Z, Akar, S, Albrecht, J, Alessio, F, Alexander, M, Albero, A Alfonso, Aliouche, Z, Alkhazov, G, Cartelle, P Alvarez, Amato, S, Amhis, Y, An, L, Anderlini, L, Andreianov, A, Andreotti, M, Archilli, F, Artamonov, A, Artuso, M, Arzymatov, K, Aslanides, E, Atzeni, M, Audurier, B, Bachmann, S, Bachmayer, M, Back, JJ, Rodriguez, P Baladron, Balagura, V, Baldini, W, Leite, J Baptista, Barlow, RJ, Barsuk, S, Barter, W, Bartolini, M, Baryshnikov, F, Basels, JM, Bassi, G, Batsukh, B, Battig, A, Bay, A, Becker, M, Bedeschi, F, Bediaga, I, Beiter, A, Belavin, V, Belin, S, Bellee, V, Belous, K, Belov, I, Belyaev, I, Bencivenni, G, Ben-Haim, E, Berezhnoy, A, Bernet, R, Berninghoff, D, Bernstein, HC, Bertella, C, Bertolin, A, Betancourt, C, Betti, F, Bezshyiko, Ia, Bhasin, S, Bhom, J, Bian, L, Bieker, MS, Bifani, S, Billoir, P, Birch, M, Bishop, FCR, Bitadze, A, Bizzeti, A, Bjørn, 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Zucchelli, S, Zuliani, D, and Zunica, G
Abstract: A search for the doubly charmed baryon $\it{\Omega}_{cc}^{+}$ with the decay mode $\it{\Omega}_{cc}^{+}\to\it{\Xi}_c^{+}K^{-}\pi^{+}$ is performed using proton-proton collision data at a centre-of-mass energy of 13$\mathrm{\,Te\kern -0.1em V}$ collected by the LHCb experiment from 2016 to 2018, corresponding to an integrated luminosity of $5.4\,\mathrm{fb}^{-1}$. No significant signal is observed within the invariant mass range of 3.6 to 4.0$\mathrm{\,Ge\kern -0.1em V}/c^2$. Upper limits are set on the ratio $R$ of the production cross-section times the total branching fraction of the $\it{\Omega}_{cc}^{+}\to\it{\Xi}_c^{+}K^{-}\pi^{+}$ decay with respect to the $\it{\Xi}_{cc}^{++}\to\it{\Lambda}_c^{+}K^{-}\pi^{+}\pi^{+}$ decay. Upper limits at 95% credibility level for $R$ in the range $0.005$ to $0.11$ are obtained for different hypotheses on the $\it{\Omega}_{cc}^{+}$ mass and lifetime in the rapidity range from 2.0 to 4.5 and transverse momentum range from 4 to 15$\mathrm{\,Ge\kern -0.1em V}/c$.
Published: 2021

4. Measurement of the CKM angle $γ$ in $B^\pm\to D K^\pm$ and $B^\pm \to D π^\pm$ decays with $D \to K_\mathrm S^0 h^+ h^-$

Author: Collaboration, LHCb, Aaij, R, Beteta, C Abellán, Ackernley, T, Adeva, B, Adinolfi, M, Afsharnia, H, Aidala, CA, Aiola, S, Ajaltouni, Z, Akar, S, Albrecht, J, Alessio, F, Alexander, M, Albero, A Alfonso, Aliouche, Z, Alkhazov, G, Cartelle, P Alvarez, Amato, S, Amhis, Y, An, L, Anderlini, L, Andreianov, A, Andreotti, M, Archilli, F, Artamonov, A, Artuso, M, Arzymatov, K, Aslanides, E, Atzeni, M, Audurier, B, Bachmann, S, Bachmayer, M, Back, JJ, Baker, S, Rodriguez, P Baladron, Balagura, V, Baldini, W, Leite, J Baptista, Barlow, RJ, Barsuk, S, Barter, W, Bartolini, M, Baryshnikov, F, Basels, JM, Bassi, G, Batsukh, B, Battig, A, Bay, A, Becker, M, Bedeschi, F, Bediaga, I, Beiter, A, Belavin, V, Belin, S, Bellee, V, Belous, K, Belov, I, Belyaev, I, Bencivenni, G, Ben-Haim, E, Berezhnoy, A, Bernet, R, Berninghoff, D, Bernstein, HC, Bertella, C, Bertholet, E, Bertolin, A, Betancourt, C, Betti, F, Bettler, MO, Bezshyiko, Ia, Bhasin, S, Bhom, J, Bian, L, Bieker, MS, Bifani, S, Billoir, 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CJG, Ossowska, A, Goicochea, JM Otalora, Ovsiannikova, T, Owen, P, Oyanguren, A, Pagare, B, Pais, PR, Pajero, T, Palano, A, Palutan, M, Pan, Y, Panshin, G, Papanestis, A, Pappagallo, M, Pappalardo, LL, Pappenheimer, C, Parker, W, Parkes, C, Parkinson, CJ, Passalacqua, B, Passaleva, G, Pastore, A, Patel, M, Patrignani, C, Pawley, CJ, Pearce, A, Pellegrino, A, Altarelli, M Pepe, Perazzini, S, Pereima, D, Perret, P, Petridis, K, Petrolini, A, Petrov, A, Petrucci, S, Petruzzo, M, Philippov, A, Pica, L, Piccini, M, Pietrzyk, B, Pietrzyk, G, Pili, M, Pinci, D, Pinzino, J, Pisani, F, Piucci, A, Resmi, PK, Placinta, V, Playfer, S, Plews, J, Casasus, M Plo, Polci, F, Lener, M Poli, Poliakova, M, Poluektov, A, Polukhina, N, Polyakov, I, Polycarpo, E, Pomery, GJ, Ponce, S, Popov, A, Popov, D, Popov, S, Poslavskii, S, Prasanth, K, Promberger, L, Prouve, C, Pugatch, V, Navarro, A Puig, Pullen, H, Punzi, G, Qian, W, Qin, J, Quagliani, R, Quintana, B, Raab, NV, Trejo, RI Rabadan, Rachwal, B, Rademacker, JH, Rama, M, Pernas, M Ramos, Rangel, MS, Ratnikov, F, Raven, G, Reboud, M, Redi, F, Reiss, F, Alepuz, C Remon, Ren, Z, Renaudin, V, Ribatti, R, Ricciardi, S, Richards, DS, Rinnert, K, Robbe, P, Robert, A, Robertson, G, Rodrigues, AB, Rodrigues, E, Lopez, JA Rodriguez, Rollings, A, Roloff, P, Romanovskiy, V, Lamas, M Romero, Vidal, A Romero, Roth, JD, Rotondo, M, Rudolph, MS, Ruf, T, Vidal, J Ruiz, Ryzhikov, A, Ryzka, J, Silva, JJ Saborido, Sagidova, N, Sahoo, N, Saitta, B, Gonzalo, D Sanchez, Gras, C Sanchez, Mayordomo, C Sanchez, Santacesaria, R, Rios, C Santamarina, Santimaria, M, Santovetti, E, Saranin, D, Sarpis, G, Sarpis, M, Sarti, A, Satriano, C, Satta, A, Saur, M, Savrina, D, Sazak, H, Smead, LG Scantlebury, Schael, S, Schellenberg, M, Schiller, M, Schindler, H, Schmelling, M, Schmelzer, T, Schmidt, B, Schneider, O, Schopper, A, Schubiger, M, Schulte, S, Schune, MH, Schwemmer, R, Sciascia, B, Sciubba, A, Sellam, S, Semennikov, A, Soares, M Senghi, Sergi, A, Serra, N, Serrano, J, Sestini, L, Seuthe, A, Seyfert, P, Shangase, DM, Shapkin, M, Shchemerov, I, Shchutska, L, Shears, T, Shekhtman, L, Shen, Z, Shevchenko, V, Shields, EB, Shmanin, E, Shupperd, JD, Siddi, BG, Coutinho, R Silva, Simi, G, Simone, S, Skiba, I, Skidmore, N, Skwarnicki, T, Slater, MW, Smallwood, JC, Smeaton, JG, Smetkina, A, Smith, E, Smith, M, Snoch, A, Soares, M, Lavra, L Soares, Sokoloff, MD, Soler, FJP, Solovev, A, Solovyev, I, Almeida, FL Souza De, Paula, B Souza De, Spaan, B, Norella, E Spadaro, Spradlin, P, Stagni, F, Stahl, M, Stahl, S, Stefko, P, Steinkamp, O, Stemmle, S, Stenyakin, O, Stevens, H, Stone, S, Stramaglia, ME, Straticiuc, M, Strekalina, D, Strokov, S, Suljik, F, Sun, J, Sun, L, Sun, Y, Svihra, P, Swallow, PN, Swientek, K, Szabelski, A, Szumlak, T, Szymanski, M, Taneja, S, Tang, Z, Tekampe, T, Teubert, F, Thomas, E, Thomson, KA, Tilley, MJ, Tisserand, V, T'Jampens, S, Tobin, M, Tolk, S, Tomassetti, L, Machado, D Torres, Tou, DY, Traill, M, Tran, MT, Trifonova, E, Trippl, C, Tsaregorodtsev, A, Tuci, G, Tully, A, Tuning, N, Ukleja, A, Unverzagt, DJ, Usachov, A, Ustyuzhanin, A, Uwer, U, Vagner, A, Vagnoni, V, Valassi, A, Valenti, G, Canudas, N Valls, Beuzekom, M Van, Hecke, H Van, Herwijnen, E Van, Hulse, CB Van, Veghel, M Van, Gomez, R Vazquez, Regueiro, P Vazquez, Sierra, C Vázquez, Vecchi, S, Velthuis, JJ, Veltri, M, Venkateswaran, A, Veronesi, M, Vesterinen, M, Vieira, D, Diaz, M Vieites, Viemann, H, Vilasis-Cardona, X, Figueras, E Vilella, Vincent, P, Vitali, G, Vollhardt, A, Bruch, D Vom, Vorobyev, A, Vorobyev, V, Voropaev, N, Waldi, R, Walsh, J, Wang, C, Wang, J, Wang, M, Wang, R, Wang, Y, Wang, Z, Ward, DR, Wark, HM, Watson, NK, Weber, SG, Websdale, D, Weisser, C, Westhenry, BDC, White, DJ, Whitehead, M, Wiedner, D, Wilkinson, G, Wilkinson, M, Williams, I, Williams, M, Williams, MRJ, Wilson, FF, Wislicki, W, Witek, M, Witola, L, Wormser, G, Wotton, SA, Wu, H, Wyllie, K, Xiang, Z, Xiao, D, Xie, Y, Xing, H, Xu, A, Xu, J, Xu, L, Xu, M, Xu, Q, Xu, Z, Yang, D, Yang, Y, Yang, Z, Yao, Y, Yeomans, LE, Yin, H, Yu, J, Yuan, X, Yushchenko, O, Zarebski, KA, Zavertyaev, M, Zdybal, M, Zenaiev, O, Zeng, M, Zhang, D, Zhang, L, Zhang, S, Zhang, Y, Zhelezov, A, Zheng, Y, Zhou, X, Zhou, Y, Zhu, X, Zhukov, V, Zonneveld, JB, Zucchelli, S, Zuliani, D, Zunica, G, Kenzie, Matthew [0000-0001-7910-4109], and Apollo - University of Cambridge Repository
Subjects: hep-ex, High Energy Physics::Experiment
Abstract: A measurement of $CP$-violating observables is performed using the decays $B^\pm\to D K^\pm$ and $B^\pm\to D \pi^\pm$, where the $D$ meson is reconstructed in one of the self-conjugate three-body final states $K_{\mathrm S}\pi^+\pi^-$ and $K_{\mathrm S}K^+K^-$ (commonly denoted $K_{\mathrm S} h^+h^-$). The decays are analysed in bins of the $D$-decay phase space, leading to a measurement that is independent of the modelling of the $D$-decay amplitude. The observables are interpreted in terms of the CKM angle $\gamma$. Using a data sample corresponding to an integrated luminosity of $9\,\text{fb}^{-1}$ collected in proton-proton collisions at centre-of-mass energies of $7$, $8$, and $13\,\text{TeV}$ with the LHCb experiment, $\gamma$ is measured to be $\left(68.7^{+5.2}_{-5.1}\right)^\circ$. The hadronic parameters $r_B^{DK}$, $r_B^{D\pi}$, $\delta_B^{DK}$, and $\delta_B^{D\pi}$, which are the ratios and strong-phase differences of the suppressed and favoured $B^\pm$ decays, are also reported.
Published: 2020

5. Measurement of the $Λ^0_b\rightarrow J/ψΛ$ angular distribution and the $Λ^0_b$ polarisation in $pp$ collisions

Author: collaboration, LHCb, Aaij, R, Beteta, C Abellán, Ackernley, T, Adeva, B, Adinolfi, M, Afsharnia, H, Aidala, CA, Aiola, S, Ajaltouni, Z, Akar, S, Albrecht, J, Alessio, F, Alexander, M, Albero, A Alfonso, Alkhazov, G, Cartelle, P Alvarez, Jr, AA Alves, Amato, S, Amhis, Y, An, L, Anderlini, L, Andreassi, G, Andreianov, A, Andreotti, M, Archilli, F, Artamonov, A, Artuso, M, Arzymatov, K, Aslanides, E, Atzeni, M, Audurier, B, Bachmann, S, Back, JJ, Baker, S, Balagura, V, Baldini, W, Leite, J Baptista, Barlow, RJ, Barsuk, S, Barter, W, Bartolini, M, Baryshnikov, F, Basels, JM, Bassi, G, Batozskaya, V, Batsukh, B, Battig, A, Bay, A, Becker, M, Bedeschi, F, Bediaga, I, Beiter, A, Belavin, V, Belin, S, Bellee, V, Belous, K, Belyaev, I, Bencivenni, G, Ben-Haim, E, Benson, S, Berezhnoy, A, Bernet, R, Berninghoff, D, Bernstein, HC, Bertella, C, Bertholet, E, Bertolin, A, Betancourt, C, Betti, F, Bettler, MO, Bezshyiko, Ia, Bhasin, S, Bhom, J, Bieker, MS, Bifani, S, Billoir, P, Bizzeti, A, Bjørn, M, Blago, MP, Blake, T, Blanc, F, Blusk, S, Bobulska, D, Bocci, V, Garcia, O Boente, Boettcher, T, Boldyrev, A, Bondar, A, Bondar, N, Borghi, S, Borisyak, M, Borsato, M, Borsuk, JT, Bowcock, TJV, Boyer, A, Bozzi, C, Bradley, MJ, Braun, S, Rodriguez, A Brea, Brodski, M, Brodzicka, J, Gonzalo, A Brossa, Brundu, D, Buchanan, E, Büchler-Germann, A, Buonaura, A, Burr, C, Bursche, A, Butkevich, A, Butter, JS, Buytaert, J, Byczynski, W, Cadeddu, S, Cai, H, Calabrese, R, Diaz, L Calero, Cali, S, Calladine, R, Calvi, M, Gomez, M Calvo, Magalhaes, P Camargo, Camboni, A, Campana, P, Perez, DH Campora, Quezada, AF Campoverde, Capriotti, L, Carbone, A, Carboni, G, Cardinale, R, Cardini, A, Carli, I, Carniti, P, Akiba, K Carvalho, Vidal, A Casais, Casse, G, Cattaneo, M, Cavallero, G, Celani, S, Cenci, R, Cerasoli, J, Chapman, MG, Charles, M, Charpentier, Ph, Chatzikonstantinidis, G, Chefdeville, M, Chekalina, V, Chen, C, Chen, S, Chernov, A, Chitic, S-G, Chobanova, V, Cholak, S, Chrzaszcz, M, Chubykin, A, Chulikov, V, Ciambrone, P, Cicala, MF, Vidal, X Cid, Ciezarek, G, Cindolo, F, Clarke, PEL, Clemencic, M, Cliff, HV, Closier, J, Cobbledick, JL, Coco, V, Coelho, JAB, Cogan, J, Cogneras, E, Cojocariu, L, Collins, P, Colombo, T, Contu, A, Cooke, N, Coombs, G, Coquereau, S, Corti, G, Sobral, CM Costa, Couturier, B, Craik, DC, Crkovská, J, Crocombe, A, Torres, M Cruz, Currie, R, Silva, CL Da, Dall'Occo, E, Dalseno, J, D'Ambrosio, C, Danilina, A, d'Argent, P, Davis, A, Francisco, O De Aguiar, Bruyn, K De, Capua, S De, Cian, M De, Miranda, JM De, Paula, L De, Serio, M De, Simone, P De, Vries, JA de, Dean, CT, Dean, W, Decamp, D, Buono, L Del, Delaney, B, Dembinski, H-P, Dendek, A, Denysenko, V, Derkach, D, Deschamps, O, Desse, F, Dettori, F, Dey, B, Canto, A Di, Nezza, P Di, Didenko, S, Dijkstra, H, Dobishuk, V, Dordei, F, Dorigo, M, Reis, AC dos, Douglas, L, Dovbnya, A, Dreimanis, K, Dudek, MW, Dufour, L, Durante, P, Durham, JM, Dutta, D, Dziewiecki, M, Dziurda, A, Dzyuba, A, Easo, S, Egede, U, Egorychev, V, Eidelman, S, Eisenhardt, S, Ek-In, S, Eklund, L, Ely, S, Ene, A, Epple, E, Escher, S, Eschle, J, Esen, S, Evans, T, Falabella, A, Fan, J, Fan, Y, Farley, N, Farry, S, Fazzini, D, Fedin, P, Féo, M, Declara, P Fernandez, Prieto, A Fernandez, Ferrari, F, Lopes, L Ferreira, Rodrigues, F Ferreira, Sole, S Ferreres, Ferrillo, M, Ferro-Luzzi, M, Filippov, S, Fini, RA, Fiorini, M, Firlej, M, Fischer, KM, Fitzpatrick, C, Fiutowski, T, Fleuret, F, Fontana, M, Fontanelli, F, Forty, R, Lima, V Franco, Sevilla, M Franco, Frank, M, Frei, C, Friday, DA, Fu, J, Fuehring, Q, Funk, W, Gabriel, E, Gaintseva, T, Torreira, A Gallas, Galli, D, Gallorini, S, Gambetta, S, Gan, Y, Gandelman, M, Gandini, P, Gao, Y, Martin, LM Garcia, Pardiñas, J García, Plana, B Garcia, Rosales, FA Garcia, Garrido, L, Gascon, D, Gaspar, C, Gerick, D, Gersabeck, E, Gersabeck, M, Gershon, T, Gerstel, D, Ghez, Ph, Gibson, V, Gioventù, A, Gironell, P Gironella, Giubega, L, Giugliano, C, Gizdov, K, Gligorov, VV, Göbel, C, Golobardes, E, Golubkov, D, Golutvin, A, Gomes, A, Gorbounov, P, Gorelov, IV, Gotti, C, Govorkova, E, Grabowski, JP, Diaz, R Graciani, Grammatico, T, Cardoso, LA Granado, Graugés, E, Graverini, E, Graziani, G, Grecu, A, Greim, R, Griffith, P, Grillo, L, Gruber, L, Cazon, BR Gruberg, Gu, C, Guarise, M, Günther, PA, Gushchin, E, Guth, A, Guz, Yu, Gys, T, Hadavizadeh, T, Haefeli, G, Haen, C, Haines, SC, Hamilton, PM, Han, Q, Han, X, Hancock, TH, Hansmann-Menzemer, S, Harnew, N, Harrison, T, Hart, R, Hasse, C, Hatch, M, He, J, Hecker, M, Heijhoff, K, Heinicke, K, Hennequin, AM, Hennessy, K, Henry, L, Heuel, J, Hicheur, A, Hill, D, Hilton, M, Hopchev, PH, Hu, J, Hu, W, Huang, W, Hulsbergen, W, Humair, T, Hunter, RJ, Hushchyn, M, Hutchcroft, D, Hynds, D, Ibis, P, Idzik, M, Ilten, P, Inglessi, A, Ivshin, K, Jacobsson, R, Jakobsen, S, Jans, E, Jashal, BK, Jawahery, A, Jevtic, V, Jiang, F, John, M, Johnson, D, Jones, CR, Jost, B, Jurik, N, Kandybei, S, Karacson, M, Kariuki, JM, Kazeev, N, Kecke, M, Keizer, F, Kelsey, M, Kenzie, M, Ketel, T, Khanji, B, Kharisova, A, Kim, KE, Kirn, T, Kirsebom, VS, Klaver, S, Klimaszewski, K, Koliiev, S, Kondybayeva, A, Konoplyannikov, A, Kopciewicz, P, Kopecna, R, Koppenburg, P, Korolev, M, Kostiuk, I, Kot, O, Kotriakhova, S, Kravchenko, P, Kravchuk, L, Krawczyk, RD, Kreps, M, Kress, F, Kretzschmar, S, Krokovny, P, Krupa, W, Krzemien, W, Kucewicz, W, Kucharczyk, M, Kudryavtsev, V, Kuindersma, HS, Kunde, GJ, Kvaratskheliya, T, Lacarrere, D, Lafferty, G, Lai, A, Lancierini, D, Lane, JJ, Lanfranchi, G, Langenbruch, C, Lantwin, O, Latham, T, Lazzari, F, Gac, R Le, Lee, SH, Lefèvre, R, Leflat, A, Leroy, O, Lesiak, T, Leverington, B, Li, H, Li, L, Li, X, Li, Y, Li, Z, Liang, X, Lin, T, Lindner, R, Lisovskyi, V, Liu, G, Liu, S, Liu, X, Loh, D, Loi, A, Castro, J Lomba, Longstaff, I, Lopes, JH, Loustau, G, Lovell, GH, Lu, Y, Lucchesi, D, Martinez, M Lucio, Luo, Y, Lupato, A, Luppi, E, Lupton, O, Lusiani, A, Lyu, X, Maccolini, S, Machefert, F, Maciuc, F, Macko, V, Mackowiak, P, Maddrell-Mander, S, Mohan, LR Madhan, Maev, O, Maevskiy, A, Maisuzenko, D, Majewski, MW, Malde, S, Malecki, B, Malinin, A, Maltsev, T, Malygina, H, Manca, G, Mancinelli, G, Escalero, R Manera, Manuzzi, D, Marangotto, D, Maratas, J, Marchand, JF, Marconi, U, Mariani, S, Benito, C Marin, Marinangeli, M, Marino, P, Marks, J, Marshall, PJ, Martellotti, G, Martinazzoli, L, Martinelli, M, Santos, D Martinez, Vidal, F Martinez, Massafferri, A, Materok, M, Matev, R, Mathad, A, Mathe, Z, Matiunin, V, Matteuzzi, C, Mattioli, KR, Mauri, A, Maurice, E, McCann, M, Mcconnell, L, McNab, A, McNulty, R, Mead, JV, Meadows, B, Meaux, C, Meier, G, Meinert, N, Melnychuk, D, Meloni, S, Merk, M, Merli, A, Garcia, L Meyer, Mikhasenko, M, Milanes, DA, Millard, E, Minard, M-N, Mineev, O, Minzoni, L, Mitchell, SE, Mitreska, B, Mitzel, DS, Mödden, A, Mogini, A, Moise, RD, Mombächer, T, Monroy, IA, Monteil, S, Morandin, M, Morello, G, Morello, MJ, Moron, J, Morris, AB, Morris, AG, Mountain, R, Mu, H, Muheim, F, Mukherjee, M, Mulder, M, Müller, D, Müller, K, Murphy, CH, Murray, D, Muzzetto, P, Naik, P, Nakada, T, Nandakumar, R, Nanut, T, Nasteva, I, Needham, M, Neri, I, Neri, N, Neubert, S, Neufeld, N, Newcombe, R, Nguyen, TD, Nguyen-Mau, C, Niel, EM, Nieswand, S, Nikitin, N, Nolte, NS, Nunez, C, Oblakowska-Mucha, A, Obraztsov, V, Ogilvy, S, O'Hanlon, DP, Oldeman, R, Onderwater, CJG, Osborn, JD, Ossowska, A, Goicochea, JM Otalora, Ovsiannikova, T, Owen, P, Oyanguren, A, Pais, PR, Pajero, T, Palano, A, Palutan, M, Panshin, G, Papanestis, A, Pappagallo, M, Pappalardo, LL, Pappenheimer, C, Parker, W, Parkes, C, Parkinson, CJ, Passaleva, G, Pastore, A, Patel, M, Patrignani, C, Pearce, A, Pellegrino, A, Altarelli, M Pepe, Perazzini, S, Pereima, D, Perret, P, Petridis, K, Petrolini, A, Petrov, A, Petrucci, S, Petruzzo, M, Pietrzyk, B, Pietrzyk, G, Pili, M, Pinci, D, Pinzino, J, Pisani, F, Piucci, A, Placinta, V, Playfer, S, Plews, J, Casasus, M Plo, Polci, F, Lener, M Poli, Poliakova, M, Poluektov, A, Polukhina, N, Polyakov, I, Polycarpo, E, Pomery, GJ, Ponce, S, Popov, A, Popov, D, Poslavskii, S, Prasanth, K, Promberger, L, Prouve, C, Pugatch, V, Navarro, A Puig, Pullen, H, Punzi, G, Qian, W, Qin, J, Quagliani, R, Quintana, B, Raab, NV, Trejo, RI Rabadan, Rachwal, B, Rademacker, JH, Rama, M, Pernas, M Ramos, Rangel, MS, Ratnikov, F, Raven, G, Reboud, M, Redi, F, Reiss, F, Alepuz, C Remon, Ren, Z, Renaudin, V, Ricciardi, S, Richards, DS, Richards, S, Rinnert, K, Robbe, P, Robert, A, Rodrigues, AB, Rodrigues, E, Lopez, JA Rodriguez, Roehrken, M, Rollings, A, Romanovskiy, V, Lamas, M Romero, Vidal, A Romero, Roth, JD, Rotondo, M, Rudolph, MS, Ruf, T, Vidal, J Ruiz, Ryzhikov, A, Ryzka, J, Silva, JJ Saborido, Sagidova, N, Sahoo, N, Saitta, B, Gras, C Sanchez, Mayordomo, C Sanchez, Santacesaria, R, Rios, C Santamarina, Santimaria, M, Santovetti, E, Sarpis, G, Sarpis, M, Sarti, A, Satriano, C, Satta, A, Saur, M, Savrina, D, Smead, LG Scantlebury, Schael, S, Schellenberg, M, Schiller, M, Schindler, H, Schmelling, M, Schmelzer, T, Schmidt, B, Schneider, O, Schopper, A, Schreiner, HF, Schubiger, M, Schulte, S, Schune, MH, Schwemmer, R, Sciascia, B, Sciubba, A, Sellam, S, Semennikov, A, Sergi, A, Serra, N, Serrano, J, Sestini, L, Seuthe, A, Seyfert, P, Shangase, DM, Shapkin, M, Shchutska, L, Shears, T, Shekhtman, L, Shevchenko, V, Shmanin, E, Shupperd, JD, Siddi, BG, Coutinho, R Silva, Oliveira, L Silva de, Simi, G, Simone, S, Skiba, I, Skidmore, N, Skwarnicki, T, Slater, MW, Smeaton, JG, Smetkina, A, Smith, E, Smith, IT, Smith, M, Snoch, A, Soares, M, Lavra, L Soares, Sokoloff, MD, Soler, FJP, Solovyev, I, Paula, B Souza De, Spaan, B, Norella, E Spadaro, Spradlin, P, Stagni, F, Stahl, M, Stahl, S, Stefko, P, Steinkamp, O, Stemmle, S, Stenyakin, O, Stepanova, M, Stevens, H, Stone, S, Stracka, S, Stramaglia, ME, Straticiuc, M, Strekalina, D, Strokov, S, Sun, J, Sun, L, Sun, Y, Svihra, P, Swientek, K, Szabelski, A, Szumlak, T, Szymanski, M, Taneja, S, Tang, Z, Tekampe, T, Teubert, F, Thomas, E, Thomson, KA, Tilley, MJ, Tisserand, V, T'Jampens, S, Tobin, M, Tolk, S, Tomassetti, L, Machado, D Torres, Tou, DY, Tournefier, E, Traill, M, Tran, MT, Trifonova, E, Trippl, C, Tsaregorodtsev, A, Tuci, G, Tully, A, Tuning, N, Ukleja, A, Usachov, A, Ustyuzhanin, A, Uwer, U, Vagner, A, Vagnoni, V, Valassi, A, Valenti, G, Beuzekom, M van, Hecke, H Van, Herwijnen, E van, Hulse, CB Van, Veghel, M van, Gomez, R Vazquez, Regueiro, P Vazquez, Sierra, C Vázquez, Vecchi, S, Velthuis, JJ, Veltri, M, Venkateswaran, A, Veronesi, M, Vesterinen, M, Barbosa, JV Viana, Vieira, D, Diaz, M Vieites, Viemann, H, Vilasis-Cardona, X, Figueras, E Vilella, Vitali, G, Vitkovskiy, A, Vollhardt, A, Bruch, D Vom, Vorobyev, A, Vorobyev, V, Voropaev, N, Waldi, R, Walsh, J, Wang, J, Wang, M, Wang, Y, Wang, Z, Ward, DR, Wark, HM, Watson, NK, Websdale, D, Weiden, A, Weisser, C, Westhenry, BDC, White, DJ, Whitehead, M, Wiedner, D, Wilkinson, G, Wilkinson, M, Williams, I, Williams, M, Williams, MRJ, Williams, T, Wilson, FF, Wislicki, W, Witek, M, Witola, L, Wormser, G, Wotton, SA, Wu, H, Wyllie, K, Xiang, Z, Xiao, D, Xie, Y, Xing, H, Xu, A, Xu, J, Xu, L, Xu, M, Xu, Q, Xu, Z, Yang, Z, Yao, Y, Yeomans, LE, Yin, H, Yu, J, Yuan, X, Yushchenko, O, Zarebski, KA, Zavertyaev, M, Zdybal, M, Zeng, M, Zhang, D, Zhang, L, Zhang, S, Zhang, Y, Zhelezov, A, Zheng, Y, Zhou, X, Zhou, Y, Zhu, X, Zhukov, V, Zonneveld, JB, Zucchelli, S, and Zunica, G
Subjects: High Energy Physics::Phenomenology, High Energy Physics::Experiment, Nuclear Experiment
Abstract: This paper presents an analysis of the $\Lambda^0_b\rightarrow J/\psi\Lambda$ angular distribution and the transverse production polarisation of $\Lambda^0_b$ baryons in proton-proton collisions at centre-of-mass energies of 7, 8 and 13 TeV. The measurements are performed using data corresponding to an integrated luminosity of 4.9 fb$^{-1}$, collected with the LHCb experiment. The polarisation is determined in a fiducial region of $\Lambda^0_b$ transverse momentum and pseudorapidity of $1 < p_{T} < 20$ GeV$/c$ and $2 < \eta < 5$, respectively. The data are consistent with $\Lambda^0_b$ baryons being produced unpolarised in this region. The parity-violating asymmetry parameter of the $\Lambda\rightarrow p\pi^-$ decay is also determined from the data and its value is found to be consistent with a recent measurement by the BES\,III collaboration.
Published: 2020

6. Study of the $ψ_2(3823)$ and $χ_{c1}(3872)$ states in $B^+ \rightarrow \left( Jψπ^+π^-\right)K^+$ decays

Author: Collaboration, LHCb, Aaij, R, Beteta, C Abellán, Ackernley, T, Adeva, B, Adinolfi, M, Afsharnia, H, Aidala, CA, Aiola, S, Ajaltouni, Z, Akar, S, Albrecht, J, Alessio, F, Alexander, M, Albero, A Alfonso, Aliouche, Z, Alkhazov, G, Cartelle, P Alvarez, Jr, AA Alves, Amato, S, Amhis, Y, An, L, Anderlini, L, Andreassi, G, Andreianov, A, Andreotti, M, Archilli, F, Artamonov, A, Artuso, M, Arzymatov, K, Aslanides, E, Atzeni, M, Audurier, B, Bachmann, S, Bachmayer, M, Back, JJ, Baker, S, Rodriguez, P Baladron, Balagura, V, Baldini, W, Leite, J Baptista, Barlow, RJ, Barsuk, S, Barter, W, Bartolini, M, Baryshnikov, F, Basels, JM, Bassi, G, Batozskaya, V, Batsukh, B, Battig, A, Bay, A, Becker, M, Bedeschi, F, Bediaga, I, Beiter, A, Belavin, V, Belin, S, Bellee, V, Belous, K, Belyaev, I, Bencivenni, G, Ben-Haim, E, Berezhnoy, A, Bernet, R, Berninghoff, D, Bernstein, HC, Bertella, C, Bertholet, E, Bertolin, A, Betancourt, C, Betti, F, Bettler, MO, Bezshyiko, Ia, Bhasin, S, Bhom, J, Bian, L, Bieker, MS, Bifani, S, Billoir, P, Bishop, FCR, Bizzeti, A, Bjørn, M, Blago, MP, Blake, T, Blanc, F, Blusk, S, Bobulska, D, Bocci, V, Boelhauve, JA, Garcia, O Boente, Boettcher, T, Boldyrev, A, Bondar, A, Bondar, N, Borghi, S, Borisyak, M, Borsato, M, Borsuk, JT, Bouchiba, SA, Bowcock, TJV, Boyer, A, Bozzi, C, Bradley, MJ, Braun, S, Rodriguez, A Brea, Brodski, M, Brodzicka, J, Gonzalo, A Brossa, Brundu, D, Buchanan, E, Buonaura, A, Burr, C, Bursche, A, Butkevich, A, Butter, JS, Buytaert, J, Byczynski, W, Cadeddu, S, Cai, H, Calabrese, R, Diaz, L Calero, Cali, S, Calladine, R, Calvi, M, Gomez, M Calvo, Magalhaes, P Camargo, Camboni, A, Campana, P, Perez, DH Campora, Quezada, AF Campoverde, Capelli, S, Capriotti, L, Carbone, A, Carboni, G, Cardinale, R, Cardini, A, Carli, I, Carniti, P, Akiba, K Carvalho, Vidal, A Casais, Casse, G, Cattaneo, M, Cavallero, G, Celani, S, Cenci, R, Cerasoli, J, Chadwick, AJ, Chapman, MG, Charles, M, Charpentier, Ph, Chatzikonstantinidis, G, Chefdeville, M, Chen, C, Chen, S, Chernov, A, Chitic, S-G, Chobanova, V, Cholak, S, Chrzaszcz, M, Chubykin, A, Chulikov, V, Ciambrone, P, Cicala, MF, Vidal, X Cid, Ciezarek, G, Cindolo, F, Clarke, PEL, Clemencic, M, Cliff, HV, Closier, J, Cobbledick, JL, Coco, V, Coelho, JAB, Cogan, J, Cogneras, E, Cojocariu, L, Collins, P, Colombo, T, Contu, A, Cooke, N, Coombs, G, Coquereau, S, Corti, G, Sobral, CM Costa, Couturier, B, Craik, DC, Crkovská, J, Torres, M Cruz, Currie, R, Silva, CL Da, Dall'Occo, E, Dalseno, J, D'Ambrosio, C, Danilina, A, D'Argent, P, Davis, A, Francisco, O De Aguiar, Bruyn, K De, Capua, S De, Cian, M De, Miranda, JM De, Paula, L De, Serio, M De, Simone, D De, Simone, P De, Vries, JA De, Dean, CT, Dean, W, Decamp, D, Buono, L Del, Delaney, B, Dembinski, H-P, Dendek, A, Denysenko, V, Derkach, D, Deschamps, O, Desse, F, Dettori, F, Dey, B, Canto, A Di, Nezza, P Di, Didenko, S, Dijkstra, H, Dobishuk, V, Donohoe, AM, Dordei, F, Dorigo, M, Reis, AC Dos, Douglas, L, Dovbnya, A, Downes, AG, Dreimanis, K, Dudek, MW, Dufour, L, Durante, P, Durham, JM, Dutta, D, Dziewiecki, M, Dziurda, A, Dzyuba, A, Easo, S, Egede, U, Egorychev, V, Eidelman, S, Eisenhardt, S, Ek-In, S, Eklund, L, Ely, S, Ene, A, Epple, E, Escher, S, Eschle, J, Esen, S, Evans, T, Falabella, A, Fan, J, Fan, Y, Fang, B, Farley, N, Farry, S, Fazzini, D, Fedin, P, Féo, M, Declara, P Fernandez, Prieto, A Fernandez, Ferrari, F, Lopes, L Ferreira, Rodrigues, F Ferreira, Sole, S Ferreres, Ferrillo, M, Ferro-Luzzi, M, Filippov, S, Fini, RA, Fiorini, M, Firlej, M, Fischer, KM, Fitzpatrick, C, Fiutowski, T, Fleuret, F, Fontana, M, Fontanelli, F, Forty, R, Lima, V Franco, Sevilla, M Franco, Frank, M, Franzoso, E, Frau, G, Frei, C, Friday, DA, Fu, J, Fuehring, Q, Funk, W, Gabriel, E, Gaintseva, T, Torreira, A Gallas, Galli, D, Gallorini, S, Gambetta, S, Gan, Y, Gandelman, M, Gandini, P, Gao, Y, Garau, M, Martin, LM Garcia, Moreno, P Garcia, Pardiñas, J García, Plana, B Garcia, Rosales, FA Garcia, Garrido, L, Gascon, D, Gaspar, C, Geertsema, RE, Gerick, D, Gersabeck, E, Gersabeck, M, Gershon, T, Gerstel, D, Ghez, Ph, Gibson, V, Gioventù, A, Gironell, P Gironella, Giubega, L, Giugliano, C, Gizdov, K, Gligorov, Göbel, C, Golobardes, E, Golubkov, D, Golutvin, A, Gomes, A, Goncerz, M, Gorbounov, P, Gorelov, Gotti, C, Govorkova, E, Grabowski, JP, Diaz, R Graciani, Grammatico, T, Cardoso, LA Granado, Graugés, E, Graverini, E, Graziani, G, Grecu, A, Greeven, LM, Griffith, P, Grillo, L, Gruber, L, Cazon, BR Gruberg, Gu, C, Guarise, M, Günther, PA, Gushchin, E, Guth, A, Guz, Yu, Gys, T, Hadavizadeh, T, Haefeli, G, Haen, C, Haines, SC, Hamilton, PM, Han, Q, Han, X, Hancock, TH, Hansmann-Menzemer, S, Harnew, N, Harrison, T, Hart, R, Hasse, C, Hatch, M, He, J, Hecker, M, Heijhoff, K, Heinicke, K, Hennequin, AM, Hennessy, K, Henry, L, Heuel, J, Hicheur, A, Hill, D, Hilton, M, Hollitt, SE, Hopchev, PH, Hu, J, Hu, W, Huang, W, Hulsbergen, W, Humair, T, Hunter, RJ, Hushchyn, M, Hutchcroft, D, Hynds, D, Ibis, P, Idzik, M, Ilin, D, Ilten, P, Inglessi, A, Ivshin, K, Jacobsson, R, Jakobsen, S, Jans, E, Jashal, BK, Jawahery, A, Jevtic, V, Jiang, F, John, M, Johnson, D, Jones, CR, Jones, TP, Jost, B, Jurik, N, Kandybei, S, Kang, Y, Karacson, M, Kariuki, JM, Kazeev, N, Kecke, M, Keizer, F, Kelsey, M, Kenzie, M, Ketel, T, Khanji, B, Kharisova, A, Kim, KE, Kirn, T, Kirsebom, VS, Kitouni, O, Klaver, S, Klimaszewski, K, Koliiev, S, Kondybayeva, A, Konoplyannikov, A, Kopciewicz, P, Kopecna, R, Koppenburg, P, Korolev, M, Kostiuk, I, Kot, O, Kotriakhova, S, Kravchenko, P, Kravchuk, L, Krawczyk, RD, Kreps, M, Kress, F, Kretzschmar, S, Krokovny, P, Krupa, W, Krzemien, W, Kucewicz, W, Kucharczyk, M, Kudryavtsev, V, Kuindersma, HS, Kunde, GJ, Kvaratskheliya, T, Lacarrere, D, Lafferty, G, Lai, A, Lampis, A, Lancierini, D, Lane, JJ, Lane, R, Lanfranchi, G, Langenbruch, C, Lantwin, O, Latham, T, Lazzari, F, Gac, R Le, Lee, SH, Lefèvre, R, Leflat, A, Leroy, O, Lesiak, T, Leverington, B, Li, H, Li, L, Li, P, Li, X, Li, Y, Li, Z, Liang, X, Lin, T, Lindner, R, Lisovskyi, V, Litvinov, R, Liu, G, Liu, H, Liu, S, Liu, X, Loi, A, Castro, J Lomba, Longstaff, I, Lopes, JH, Loustau, G, Lovell, GH, Lu, Y, Lucchesi, D, Luchuk, S, Martinez, M Lucio, Lukashenko, V, Luo, Y, Lupato, A, Luppi, E, Lupton, O, Lusiani, A, Lyu, X, Ma, L, Maccolini, S, Machefert, F, Maciuc, F, Macko, V, Mackowiak, P, Maddrell-Mander, S, Mohan, LR Madhan, Maev, O, Maevskiy, A, Maisuzenko, D, Majewski, MW, Malde, S, Malecki, B, Malinin, A, Maltsev, T, Malygina, H, Manca, G, Mancinelli, G, Escalero, R Manera, Manuzzi, D, Marangotto, D, Maratas, J, Marchand, JF, Marconi, U, Mariani, S, Benito, C Marin, Marinangeli, M, Marino, P, Marks, J, Marshall, PJ, Martellotti, G, Martinazzoli, L, Martinelli, M, Santos, D Martinez, Vidal, F Martinez, Massafferri, A, Materok, M, Matev, R, Mathad, A, Mathe, Z, Matiunin, V, Matteuzzi, C, Mattioli, KR, Mauri, A, Maurice, E, Mazurek, M, McCann, M, Mcconnell, L, Mcgrath, TH, McNab, A, McNulty, R, Mead, JV, Meadows, B, Meaux, C, Meier, G, Meinert, N, Melnychuk, D, Meloni, S, Merk, M, Merli, A, Garcia, L Meyer, Mikhasenko, M, Milanes, DA, Millard, E, Minard, M-N, Mineev, O, Minzoni, L, Mitchell, SE, Mitreska, B, Mitzel, DS, Mödden, A, Mohammed, RA, Moise, RD, Mombächer, T, Monroy, IA, Monteil, S, Morandin, M, Morello, G, Morello, MJ, Moron, J, Morris, AB, Morris, AG, Mountain, R, Mu, H, Muheim, F, Mukherjee, M, Mulder, M, Müller, D, Müller, K, Murphy, CH, Murray, D, Muzzetto, P, Naik, P, Nakada, T, Nandakumar, R, Nanut, T, Nasteva, I, Needham, M, Neri, I, Neri, N, Neubert, S, Neufeld, N, Newcombe, R, Nguyen, TD, Nguyen-Mau, C, Niel, EM, Nieswand, S, Nikitin, N, Nolte, NS, Nunez, C, Oblakowska-Mucha, A, Obraztsov, V, Ogilvy, S, O'Hanlon, DP, Oldeman, R, Onderwater, CJG, Osborn, JD, Ossowska, A, Goicochea, JM Otalora, Ovsiannikova, T, Owen, P, Oyanguren, A, Pagare, B, Pais, PR, Pajero, T, Palano, A, Palutan, M, Pan, Y, Panshin, G, Papanestis, A, Pappagallo, M, Pappalardo, LL, Pappenheimer, C, Parker, W, Parkes, C, Parkinson, CJ, Passaleva, G, Pastore, A, Patel, M, Patrignani, C, Pearce, A, Pellegrino, A, Altarelli, M Pepe, Perazzini, S, Pereima, D, Perret, P, Petridis, K, Petrolini, A, Petrov, A, Petrucci, S, Petruzzo, M, Philippov, A, Pica, L, Pietrzyk, B, Pietrzyk, G, Pili, M, Pinci, D, Pinzino, J, Pisani, F, Piucci, A, Placinta, V, Playfer, S, Plews, J, Casasus, M Plo, Polci, F, Lener, M Poli, Poliakova, M, Poluektov, A, Polukhina, N, Polyakov, I, Polycarpo, E, Pomery, GJ, Ponce, S, Popov, A, Popov, D, Popov, S, Poslavskii, S, Prasanth, K, Promberger, L, Prouve, C, Pugatch, V, Navarro, A Puig, Pullen, H, Punzi, G, Qian, W, Qin, J, Quagliani, R, Quintana, B, Raab, NV, Trejo, RI Rabadan, Rachwal, B, Rademacker, JH, Rama, M, Pernas, M Ramos, Rangel, MS, Ratnikov, F, Raven, G, Reboud, M, Redi, F, Reiss, F, Alepuz, C Remon, Ren, Z, Renaudin, V, Ribatti, R, Ricciardi, S, Richards, DS, Rinnert, K, Robbe, P, Robert, A, Robertson, G, Rodrigues, AB, Rodrigues, E, Lopez, JA Rodriguez, Roehrken, M, Rollings, A, Romanovskiy, V, Lamas, M Romero, Vidal, A Romero, Roth, JD, Rotondo, M, Rudolph, MS, Ruf, T, Vidal, J Ruiz, Ryzhikov, A, Ryzka, J, Silva, JJ Saborido, Sagidova, N, Sahoo, N, Saitta, B, Gras, C Sanchez, Mayordomo, C Sanchez, Santacesaria, R, Rios, C Santamarina, Santimaria, M, Santovetti, E, Sarpis, G, Sarpis, M, Sarti, A, Satriano, C, Satta, A, Saur, M, Savrina, D, Sazak, H, Smead, LG Scantlebury, Schael, S, Schellenberg, M, Schiller, M, Schindler, H, Schmelling, M, Schmelzer, T, Schmidt, B, Schneider, O, Schopper, A, Schreiner, HF, Schubiger, M, Schulte, S, Schune, MH, Schwemmer, R, Sciascia, B, Sciubba, A, Sellam, S, Semennikov, A, Sergi, A, Serra, N, Serrano, J, Sestini, L, Seuthe, A, Seyfert, P, Shangase, DM, Shapkin, M, Shchutska, L, Shears, T, Shekhtman, L, Shevchenko, V, Shields, EB, Shmanin, E, Shupperd, JD, Siddi, BG, Coutinho, R Silva, Oliveira, L Silva De, Simi, G, Simone, S, Skiba, I, Skidmore, N, Skwarnicki, T, Slater, MW, Smallwood, JC, Smeaton, JG, Smetkina, A, Smith, E, Smith, M, Snoch, A, Soares, M, Lavra, L Soares, Sokoloff, MD, Soler, FJP, Solovev, A, Solovyev, I, Almeida, FL Souza De, Paula, B Souza De, Spaan, B, Norella, E Spadaro, Spradlin, P, Stagni, F, Stahl, M, Stahl, S, Stefko, P, Steinkamp, O, Stemmle, S, Stenyakin, O, Stevens, H, Stone, S, Stracka, S, Stramaglia, ME, Straticiuc, M, Strekalina, D, Strokov, S, Suljik, F, Sun, J, Sun, L, Sun, Y, Svihra, P, Swallow, PN, Swientek, K, Szabelski, A, Szumlak, T, Szymanski, M, Taneja, S, Tang, Z, Tekampe, T, Teubert, F, Thomas, E, Thomson, KA, Tilley, MJ, Tisserand, V, T'Jampens, S, Tobin, M, Tolk, S, Tomassetti, L, Machado, D Torres, Tou, DY, Traill, M, Tran, MT, Trifonova, E, Trippl, C, Tsaregorodtsev, A, Tuci, G, Tully, A, Tuning, N, Ukleja, A, Unverzagt, DJ, Usachov, A, Ustyuzhanin, A, Uwer, U, Vagner, A, Vagnoni, V, Valassi, A, Valenti, G, Beuzekom, M Van, Hecke, H Van, Herwijnen, E Van, Hulse, CB Van, Veghel, M Van, Gomez, R Vazquez, Regueiro, P Vazquez, Sierra, C Vázquez, Vecchi, S, Velthuis, JJ, Veltri, M, Venkateswaran, A, Veronesi, M, Vesterinen, M, Vieira, D, Diaz, M Vieites, Viemann, H, Vilasis-Cardona, X, Figueras, E Vilella, Vincent, P, Vitali, G, Vitkovskiy, A, Vollhardt, A, Bruch, D Vom, Vorobyev, A, Vorobyev, V, Voropaev, N, Waldi, R, Walsh, J, Wang, J, Wang, M, Wang, R, Wang, Y, Wang, Z, Ward, DR, Wark, HM, Watson, NK, Weber, SG, Websdale, D, Weisser, C, Westhenry, BDC, White, DJ, Whitehead, M, Wiedner, D, Wilkinson, G, Wilkinson, M, Williams, I, Williams, M, Williams, MRJ, Wilson, FF, Wislicki, W, Witek, M, Witola, L, Wormser, G, Wotton, SA, Wu, H, Wyllie, K, Xiang, Z, Xiao, D, Xie, Y, Xing, H, Xu, A, Xu, J, Xu, L, Xu, M, Xu, Q, Xu, Z, Yang, D, Yang, Y, Yang, Z, Yao, Y, Yeomans, LE, Yin, H, Yu, J, Yuan, X, Yushchenko, O, Zarebski, KA, Zavertyaev, M, Zdybal, M, Zenaiev, O, Zeng, M, Zhang, D, Zhang, L, Zhang, S, Zhang, Y, Zhelezov, A, Zheng, Y, Zhou, X, Zhou, Y, Zhu, X, Zhukov, V, Zonneveld, JB, Zucchelli, S, Zuliani, D, Zunica, G, Kenzie, Matthew [0000-0001-7910-4109], and Apollo - University of Cambridge Repository
Subjects: hep-ex
Abstract: The decays $B^+\rightarrow J/\psi \pi^+ \pi^- K^+$ are studied using a data set corresponding to an integrated luminosity of 9fb$^{-1}$ collected with the LHCb detector in proton-proton collisions between 2011 and 2018. Precise measurements of the ratios of branching fractions with the intermediate $\psi_2(3823)$, $\chi_{c1}(3872)$ and $\psi(2S)$ states are reported. The decay of $B^+\rightarrow \psi_2(3823)K^+$ with $\psi_2(3823)\rightarrow J\psi\pi^+\pi^-$ is observed for the first time with a significance of 5.1 standard deviations. The mass differences between the $\psi_2(3823)$, $\chi_{c1}(3872)$ and $\psi(2S)$ states are measured to be $$ \begin{array}{rcl} m_{\chi_{c1(3872)}} - m_{\psi_2(3823)} &= & 47.50 \pm 0.53 \pm 0.13\,\mathrm{MeV/}c^2\,, \\ m_{\psi_2(3823)} - m_{\psi(2S)} &= & 137.98 \pm 0.53 \pm 0.14\,\mathrm{MeV/}c^2\,, \\ m_{\chi_{c1}(3872)} - m_{\psi(2S)} &= & 185.49 \pm 0.06 \pm 0.03\,\mathrm{MeV/}c^2\,, \end{array} $$ resulting in the most precise determination of the $\chi_{c1}(3782)$ mass. The width of the $\psi_2(3823)$ state is found to be below 5.2MeV at 90\% confidence level. The Breit-Wigner width of the $\chi_{c1}(3872)$ state is measured to be $$ \Gamma^{\mathrm{BW}}_{\chi_{c1}(3872)} = 0.96^{+0.19}_{-0.18}\pm0.21 \mathrm{MeV},$$ which is inconsistent with zero by 5.5 standard deviations.
Published: 2020

7. Search for the rare decay $B^{+} \rightarrow μ^{+}μ^{-}μ^{+}ν_{μ}$

Author: collaboration, LHCb, Aaij, R, Beteta, C Abellán, Adeva, B, Adinolfi, M, Aidala, CA, Ajaltouni, Z, Akar, S, Albicocco, P, Albrecht, J, Alessio, F, Alexander, M, Albero, A Alfonso, Alkhazov, G, Cartelle, P Alvarez, Jr, AA Alves, Amato, S, Amerio, S, Amhis, Y, An, L, Anderlini, L, Andreassi, G, Andreotti, M, Andrews, JE, Archilli, F, d'Argent, P, Romeu, J Arnau, Artamonov, A, Artuso, M, Arzymatov, K, Aslanides, E, Atzeni, M, Audurier, B, Bachmann, S, Back, JJ, Baker, S, Balagura, V, Baldini, W, Baranov, A, Barlow, RJ, Barrand, GC, Barsuk, S, Barter, W, Bartolini, M, Baryshnikov, F, Batozskaya, V, Batsukh, B, Battig, A, Battista, V, Bay, A, Beddow, J, Bedeschi, F, Bediaga, I, Beiter, A, Bel, LJ, Belin, S, 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, MO, Beuzekom, M van, Bezshyiko, Ia, Bhasin, S, Bhom, J, Bifani, S, Billoir, P, Birnkraut, A, Bizzeti, A, Bjørn, M, Blago, MP, Blake, T, Blanc, F, Blusk, S, Bobulska, D, Bocci, V, Garcia, O Boente, Boettcher, T, Bondar, A, Bondar, N, Borghi, S, Borisyak, M, Borsato, M, Bossu, F, Boubdir, M, Bowcock, TJV, Bozzi, C, Braun, S, Brodski, M, Brodzicka, J, Gonzalo, A Brossa, Brundu, D, Buchanan, E, Buonaura, A, Burr, C, Bursche, A, Buytaert, J, Byczynski, W, Cadeddu, S, Cai, H, Calabrese, R, Calladine, R, Calvi, M, Gomez, M Calvo, Camboni, A, Campana, P, Perez, DH Campora, Capriotti, L, Carbone, A, Carboni, G, Cardinale, R, Cardini, A, Carniti, P, Carson, L, Akiba, K Carvalho, Casse, G, Cassina, L, Cattaneo, M, Cavallero, G, Cenci, R, Chamont, D, Chapman, MG, Charles, M, Charpentier, Ph, Chatzikonstantinidis, G, Chefdeville, M, Chekalina, V, Chen, C, Chen, S, Chitic, S-G, Chobanova, V, Chrzaszcz, M, Chubykin, A, Ciambrone, P, Vidal, X Cid, Ciezarek, G, Cindolo, F, Clarke, PEL, Clemencic, M, Cliff, HV, Closier, J, Coco, V, Coelho, JAB, Cogan, J, Cogneras, E, Cojocariu, L, Collins, P, Colombo, T, Comerma-Montells, A, Contu, A, Coombs, G, Coquereau, S, Corti, G, Corvo, M, Sobral, CM Costa, Couturier, B, Cowan, GA, Craik, DC, Crocombe, A, Torres, M Cruz, Currie, R, D'Ambrosio, C, Marinho, F Da Cunha, Silva, CL Da, Dall'Occo, E, Dalseno, J, Danilina, A, Davis, A, Francisco, O De Aguiar, Bruyn, K De, Capua, S De, Cian, M De, Miranda, JM De, Paula, L De, Serio, M De, Simone, P De, Dean, CT, Decamp, D, Buono, L Del, Delaney, B, Dembinski, H-P, Demmer, M, Dendek, A, Derkach, D, Deschamps, O, Desse, F, Dettori, F, Dey, B, Canto, A Di, Nezza, P Di, Didenko, S, Dijkstra, H, Dordei, F, Dorigo, M, Suárez, A Dosil, Douglas, L, Dovbnya, A, Dreimanis, K, Dufour, L, Dujany, G, Durante, P, Durham, JM, Dutta, D, Dzhelyadin, R, Dziewiecki, M, Dziurda, A, Dzyuba, A, Easo, S, Egede, U, Egorychev, V, Eidelman, S, Eisenhardt, S, Eitschberger, U, Ekelhof, R, Eklund, L, Ely, S, Ene, A, Escher, S, Esen, S, Evans, T, Falabella, A, Farley, N, Farry, S, Fazzini, D, Federici, L, Declara, P Fernandez, Prieto, A Fernandez, Ferrari, F, Lopes, L Ferreira, Rodrigues, F Ferreira, Ferro-Luzzi, M, Filippov, S, Fini, RA, Fiorini, M, Firlej, M, Fitzpatrick, C, Fiutowski, T, Fleuret, F, Fontana, M, Fontanelli, F, Forty, R, Lima, V Franco, Frank, M, Frei, C, Fu, J, Funk, W, Färber, C, Féo, M, Gabriel, E, Torreira, A Gallas, Galli, D, Gallorini, S, Gambetta, S, Gan, Y, Gandelman, M, Gandini, P, Gao, Y, Martin, LM Garcia, Plana, B Garcia, Pardiñas, J García, Tico, J Garra, Garrido, L, Gascon, D, Gaspar, C, Gavardi, L, Gazzoni, G, Gerick, D, Gersabeck, E, Gersabeck, M, Gershon, T, Gerstel, D, Ghez, Ph, Gibson, V, Girard, OG, Gironell, P Gironella, Giubega, L, Gizdov, K, Gligorov, VV, Golubkov, D, Golutvin, A, Gomes, A, Gorelov, IV, Gotti, C, Govorkova, E, Grabowski, JP, Diaz, R Graciani, Cardoso, LA Granado, Graugés, E, Graverini, E, Graziani, G, Grecu, A, Greim, R, Griffith, P, Grillo, L, Gruber, L, Cazon, BR Gruberg, Grünberg, O, Gu, C, Gushchin, E, Guth, A, 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Subjects: High Energy Physics::Experiment, Nuclear Experiment
Abstract: A search for the rare leptonic decay $B^{+} \rightarrow {\mu}^{+}{\mu}^{-}{\mu}^{+}{\nu}_{{\mu}}$ is performed using proton-proton collision data corresponding to an integrated luminosity of $4.7$ fb$^{-1}$ collected by the LHCb experiment. The search is carried out in the region where the lowest of the two ${\mu}^{+}{\mu}^{-}$ mass combinations is below $980$MeV/c$^{2}$. The data are consistent with the background-only hypothesis and an upper limit of $1.6 \times 10^{-8}$ at 95% confidence level is set on the branching fraction in the stated kinematic region.
Published: 2019

8. Measurement of the $CP$-violating phase $φ_s$ from $B_{s}^{0}\to J/ψπ^+π^-$ decays in 13 TeV $pp$ collisions

Author: Collaboration, LHCb, Aaij, R, Beteta, C Abellán, Adeva, B, Adinolfi, M, Aidala, CA, Ajaltouni, Z, Akar, S, Albicocco, P, Albrecht, J, Alessio, F, Alexander, M, Albero, A Alfonso, Alkhazov, G, Cartelle, P Alvarez, Jr, AA Alves, Amato, S, Amhis, Y, An, L, Anderlini, L, Andreassi, G, Andreotti, M, Andrews, JE, Archilli, F, Romeu, J Arnau, Artamonov, A, Artuso, M, Arzymatov, K, Aslanides, E, Atzeni, M, Audurier, B, Bachmann, S, Back, JJ, Baker, S, Balagura, V, Baldini, W, Baranov, A, Barlow, RJ, Barrand, GC, Barsuk, S, Barter, W, Bartolini, M, Baryshnikov, F, Batozskaya, V, Batsukh, B, Battig, A, Battista, V, Bay, A, Bedeschi, F, Bediaga, I, Beiter, A, Bel, LJ, Belin, S, Beliy, N, Bellee, V, Belloli, N, Belous, K, Belyaev, I, Bencivenni, G, Ben-Haim, E, Benson, S, Beranek, S, Berezhnoy, A, Bernet, R, Berninghoff, D, Bertholet, E, Bertolin, A, Betancourt, C, Betti, F, Bettler, MO, Bezshyiko, Ia, Bhasin, S, Bhom, J, Bieker, MS, Bifani, S, Billoir, P, Birnkraut, A, Bizzeti, A, Bjørn, 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Mattioli, KR, Mauri, A, Maurice, E, Maurin, B, McCann, M, McNab, A, McNulty, R, Mead, JV, Meadows, B, Meaux, C, Meinert, N, Melnychuk, D, Merk, M, Merli, A, Michielin, E, Milanes, DA, Millard, E, Minard, M-N, Minzoni, L, Mitzel, DS, Mödden, A, Mogini, A, Moise, RD, Mombächer, T, Monroy, IA, Monteil, S, Morandin, M, Morello, G, Morello, MJ, Moron, J, Morris, AB, Mountain, R, Muheim, F, Mukherjee, M, Mulder, M, Müller, D, Müller, J, Müller, K, Müller, V, Murphy, CH, Murray, D, Naik, P, Nakada, T, Nandakumar, R, Nandi, A, Nanut, T, Nasteva, I, Needham, M, Neri, N, Neubert, S, Neufeld, N, Newcombe, R, Nguyen, TD, Nguyen-Mau, C, Nieswand, S, Niet, R, Nikitin, N, Nolte, NS, Oblakowska-Mucha, A, Obraztsov, V, Ogilvy, S, O'Hanlon, DP, Oldeman, R, Onderwater, CJG, Osborn, JD, Ossowska, A, Goicochea, JM Otalora, Ovsiannikova, T, Owen, P, Oyanguren, A, Pais, PR, Pajero, T, Palano, A, Palutan, M, Panshin, G, Papanestis, A, Pappagallo, M, Pappalardo, LL, Parker, W, Parkes, C, Passaleva, G, Pastore, A, Patel, M, Patrignani, C, Pearce, A, Pellegrino, A, Penso, G, Altarelli, M Pepe, Perazzini, S, Pereima, D, Perret, P, Pescatore, L, Petridis, K, Petrolini, A, Petrov, A, Petrucci, S, Petruzzo, M, Pietrzyk, B, Pietrzyk, G, Pikies, M, Pili, M, Pinci, D, Pinzino, J, Pisani, F, Piucci, A, Placinta, V, Playfer, S, Plews, J, Casasus, M Plo, Polci, F, Lener, M Poli, Poliakova, M, Poluektov, A, Polukhina, N, Polyakov, I, Polycarpo, E, Pomery, GJ, Ponce, S, Popov, A, Popov, D, Poslavskii, S, Price, E, Prouve, C, Pugatch, V, Navarro, A Puig, Pullen, H, Punzi, G, Qian, W, Qin, J, Quagliani, R, Quintana, B, Raab, NV, Rachwal, B, Rademacker, JH, Rama, M, Pernas, M Ramos, Rangel, MS, Ratnikov, F, Raven, G, Salzgeber, M Ravonel, Reboud, M, Redi, F, Reichert, S, Reiss, F, Alepuz, C Remon, Ren, Z, Renaudin, V, Ricciardi, S, Richards, S, Rinnert, K, Robbe, P, Robert, A, Rodrigues, AB, Rodrigues, E, Lopez, JA Rodriguez, Roehrken, M, Roiser, S, Rollings, A, Romanovskiy, V, Vidal, A Romero, Roth, JD, Rotondo, M, Rudolph, MS, Ruf, T, Vidal, J Ruiz, Silva, JJ Saborido, Sagidova, N, Saitta, B, Guimaraes, V Salustino, Gras, C Sanchez, Mayordomo, C Sanchez, Sedes, B Sanmartin, Santacesaria, R, Rios, C Santamarina, Santimaria, M, Santovetti, E, Sarpis, G, Sarti, A, Satriano, C, Satta, A, Saur, M, Savrina, D, Schael, S, Schellenberg, M, Schiller, M, Schindler, H, Schmelling, M, Schmelzer, T, Schmidt, B, Schneider, O, Schopper, A, Schreiner, HF, Schubiger, M, Schulte, S, Schune, MH, Schwemmer, R, Sciascia, B, Sciubba, A, Semennikov, A, Sepulveda, ES, Sergi, A, Serra, N, Serrano, J, Sestini, L, Seuthe, A, Seyfert, P, Shapkin, M, Shears, T, Shekhtman, L, Shevchenko, V, Shmanin, E, Siddi, BG, Coutinho, R Silva, Oliveira, L Silva de, Simi, G, Simone, S, Skiba, I, Skidmore, N, Skwarnicki, T, Slater, MW, Smeaton, JG, Smith, E, Smith, IT, Smith, M, Soares, M, Lavra, L Soares, Sokoloff, MD, Soler, FJP, Paula, B Souza De, Spaan, B, Norella, E Spadaro, Spradlin, P, Stagni, F, Stahl, M, Stahl, S, Stefko, P, Stefkova, S, Steinkamp, O, Stemmle, S, Stenyakin, O, Stepanova, M, Stevens, H, Stocchi, A, Stone, S, Stracka, S, Stramaglia, ME, Straticiuc, M, Straumann, U, Strokov, S, Sun, J, Sun, L, Sun, Y, Swientek, K, Szabelski, A, Szumlak, T, Szymanski, M, Tang, Z, Tekampe, T, Tellarini, G, Teubert, F, Thomas, E, Tilley, MJ, Tisserand, V, T'Jampens, S, Tobin, M, Tolk, S, Tomassetti, L, Tonelli, D, Tou, DY, Aoude, R Tourinho Jadallah, Tournefier, E, Traill, M, Tran, MT, Trisovic, A, Tsaregorodtsev, A, Tuci, G, Tully, A, Tuning, N, Ukleja, A, Usachov, A, Ustyuzhanin, A, Uwer, U, Vagner, A, Vagnoni, V, Valassi, A, Valat, S, Valenti, G, Beuzekom, M van, Hecke, H Van, Herwijnen, E van, Hulse, CB Van, Tilburg, J van, Veghel, M van, Gomez, R Vazquez, Regueiro, P Vazquez, Sierra, C Vázquez, Vecchi, S, Velthuis, JJ, Veltri, M, Venkateswaran, A, Vernet, M, Veronesi, M, Vesterinen, M, Barbosa, JV Viana, Vieira, D, Diaz, M Vieites, Viemann, H, Vilasis-Cardona, X, Vitkovskiy, A, Vitti, M, Volkov, V, Vollhardt, A, Bruch, D Vom, Voneki, B, Vorobyev, A, Vorobyev, V, Voropaev, N, Waldi, R, Walsh, J, Wang, J, Wang, M, Wang, Y, Wang, Z, Ward, DR, Wark, HM, Watson, NK, Websdale, D, Weiden, A, Weisser, C, Whitehead, M, Wilkinson, G, Wilkinson, M, Williams, I, Williams, M, Williams, MRJ, Williams, T, Wilson, FF, Winn, M, Wislicki, W, Witek, M, Wormser, G, Wotton, SA, Wyllie, K, Xiao, D, Xie, Y, Xing, H, Xu, A, Xu, M, Xu, Q, Xu, Z, Yang, Z, Yao, Y, Yeomans, LE, Yin, H, Yu, J, Yuan, X, Yushchenko, O, Zarebski, KA, Zavertyaev, M, Zeng, M, Zhang, D, Zhang, L, Zhang, WC, Zhang, Y, Zhelezov, A, Zheng, Y, Zhu, X, Zhukov, V, Zonneveld, JB, and Zucchelli, S
Subjects: Astrophysics::High Energy Astrophysical Phenomena, High Energy Physics::Experiment, Astrophysics::Earth and Planetary Astrophysics, Astrophysics::Galaxy Astrophysics
Abstract: Decays of $B_{s}^{0}$ and $\overline{B}{}_{s}^{0}$ mesons into $J/\psi\pi^+\pi^-$ final states are studied in a data sample corresponding to 1.9 fb$^{-1}$ of integrated luminosity collected with the LHCb detector in 13 TeV $pp$ collisions. A time-dependent amplitude analysis is used to determine the final-state resonance contributions, the $CP$-violating phase $\phi_s=-0.057\pm 0.060\pm 0.011$ rad, the decay-width difference between the heavier mass $B_{s}^{0}$ eigenstate and the $B^{0}$ meson of $-0.050\pm 0.004\pm 0.004$ ps$^{-1}$, and the $CP$-violating parameter $|\lambda|=1.01_{-0.06}^{+0.08}\pm0.03$, where the first uncertainty is statistical and the second systematic. These results are combined with previous LHCb measurements in the same decay channel using 7 TeV and 8 TeV $pp$ collisions obtaining $\phi_s =0.002\pm0.044\pm0.012$ rad, and $|\lambda| =0.949\pm0.036\pm0.019$.
Published: 2019

9. Amplitude analysis of $B^{0}_{s} \rightarrow K^{0}_{\textrm{S}} K^{\pm}π^{\mp}$ decays

Author: Collaboration, LHCb, Aaij, R, Beteta, C Abellán, Adeva, B, Adinolfi, M, Aidala, CA, Ajaltouni, Z, Akar, S, Albicocco, P, Albrecht, J, Alessio, F, Alexander, M, Albero, A Alfonso, Alkhazov, G, Cartelle, P Alvarez, Jr, AA Alves, Amato, S, Amerio, S, Amhis, Y, An, L, Anderlini, L, Andreassi, G, Andreotti, M, Andrews, JE, Archilli, F, Romeu, J Arnau, Artamonov, A, Artuso, M, Arzymatov, K, Aslanides, E, Atzeni, M, Audurier, B, Bachmann, S, Back, JJ, Baker, S, Balagura, V, Baldini, W, Baranov, A, Barlow, RJ, Barrand, GC, Barsuk, S, Barter, W, Bartolini, M, Baryshnikov, F, Batozskaya, V, Batsukh, B, Battig, A, Battista, V, Bay, A, Beddow, J, Bedeschi, F, Bediaga, I, Beiter, A, Bel, LJ, Belin, S, Beliy, N, Bellee, V, Belloli, N, Belous, K, Belyaev, I, Bencivenni, G, Ben-Haim, E, Benson, S, Beranek, S, Berezhnoy, A, Bernet, R, Berninghoff, D, Bertholet, E, Bertolin, A, Betancourt, C, Betti, F, Bettler, MO, Bezshyiko, Ia, Bhasin, S, Bhom, J, Bieker, MS, Bifani, S, Billoir, P, Birnkraut, A, Bizzeti, A, Bjørn, M, Blago, MP, Blake, T, Blanc, F, Blusk, S, Bobulska, D, Bocci, V, Garcia, O Boente, Boettcher, T, Bondar, A, Bondar, N, Borghi, S, Borisyak, M, Borsato, M, Boubdir, M, Bowcock, TJV, Bozzi, C, Braun, S, Brodski, M, Brodzicka, J, Gonzalo, A Brossa, Brundu, D, Buchanan, E, Buonaura, A, Burr, C, Bursche, A, Buytaert, J, Byczynski, W, Cadeddu, S, Cai, H, Calabrese, R, Calladine, R, Calvi, M, Gomez, M Calvo, Camboni, A, Campana, P, Perez, DH Campora, Capriotti, L, Carbone, A, Carboni, G, Cardinale, R, Cardini, A, Carniti, P, Akiba, K Carvalho, Casse, G, Cattaneo, M, Cavallero, G, Cenci, R, Chamont, D, Chapman, MG, Charles, M, Charpentier, Ph, Chatzikonstantinidis, G, Chefdeville, M, Chekalina, V, Chen, C, Chen, S, Chitic, S-G, Chobanova, V, Chrzaszcz, M, Chubykin, A, Ciambrone, P, Vidal, X Cid, Ciezarek, G, Cindolo, F, Clarke, PEL, Clemencic, M, Cliff, HV, Closier, J, Coco, V, Coelho, JAB, Cogan, J, Cogneras, E, Cojocariu, L, Collins, P, Colombo, T, Comerma-Montells, A, Contu, A, Coombs, G, Coquereau, S, Corti, G, Corvo, M, Sobral, CM Costa, Couturier, B, Cowan, GA, Craik, DC, Crocombe, A, Torres, M Cruz, Currie, R, Marinho, F Da Cunha, Silva, CL Da, Dall'Occo, E, Dalseno, J, D'Ambrosio, C, Danilina, A, d'Argent, P, Davis, A, Francisco, O De Aguiar, Bruyn, K De, Capua, S De, Cian, M De, Miranda, JM De, Paula, L De, Serio, M De, Simone, P De, Vries, JA de, Dean, CT, Dean, W, Decamp, D, Buono, L Del, Delaney, B, Dembinski, H-P, Demmer, M, Dendek, A, Derkach, D, Deschamps, O, Desse, F, Dettori, F, Dey, B, Canto, A Di, Nezza, P Di, Didenko, S, Dijkstra, H, Dordei, F, Dorigo, M, Reis, AC dos, Suárez, A Dosil, Douglas, L, Dovbnya, A, Dreimanis, K, Dufour, L, Dujany, G, Durante, P, Durham, JM, Dutta, D, Dzhelyadin, R, Dziewiecki, M, Dziurda, A, Dzyuba, A, Easo, S, Egede, U, Egorychev, V, Eidelman, S, Eisenhardt, S, Eitschberger, U, Ekelhof, R, Eklund, L, Ely, S, Ene, A, Escher, S, Esen, S, Evans, T, Falabella, A, Färber, C, Farley, N, Farry, S, Fazzini, D, Féo, M, Declara, P Fernandez, Prieto, A Fernandez, Ferrari, F, Lopes, L Ferreira, Rodrigues, F Ferreira, Ferro-Luzzi, M, Filippov, S, Fini, RA, Fiorini, M, Firlej, M, Fitzpatrick, C, Fiutowski, T, Fleuret, F, Fontana, M, Fontanelli, F, Forty, R, Lima, V Franco, Frank, M, Frei, C, Fu, J, Funk, W, Gabriel, E, Torreira, A Gallas, Galli, D, Gallorini, S, Gambetta, S, Gan, Y, Gandelman, M, Gandini, P, Gao, Y, Martin, LM Garcia, Pardiñas, J García, Plana, B Garcia, Tico, J Garra, Garrido, L, Gascon, D, Gaspar, C, Gavardi, L, Gazzoni, G, Gerick, D, Gersabeck, E, Gersabeck, M, Gershon, T, Gerstel, D, Ghez, Ph, Gibson, V, Girard, OG, Gironell, P Gironella, Giubega, L, Gizdov, K, Gligorov, VV, Göbel, C, Golubkov, D, Golutvin, A, Gomes, A, Gorelov, IV, Gotti, C, Govorkova, E, Grabowski, JP, Diaz, R Graciani, Cardoso, LA Granado, Graugés, E, Graverini, E, Graziani, G, Grecu, A, Greim, R, Griffith, P, Grillo, L, Gruber, L, Cazon, BR Gruberg, Grünberg, O, Gu, C, Gushchin, E, Guth, A, Guz, Yu, Gys, T, Hadavizadeh, T, Hadjivasiliou, C, Haefeli, G, Haen, C, Haines, SC, Hamilton, B, Han, X, Hancock, TH, Hansmann-Menzemer, S, Harnew, N, Harrison, T, Hasse, C, Hatch, M, He, J, Hecker, M, Heinicke, K, Heister, A, Hennessy, K, Henry, L, Heß, M, Heuel, J, Hicheur, A, Charman, R Hidalgo, Hill, D, Hilton, M, Hopchev, PH, Hu, J, Hu, W, Huang, W, Huard, ZC, Hulsbergen, W, Humair, T, Hushchyn, M, Hutchcroft, D, Hynds, D, Ibis, P, Idzik, M, Ilten, P, Inglessi, A, Inyakin, A, Ivshin, K, Jacobsson, R, Jalocha, J, Jans, E, Jashal, BK, Jawahery, A, Jiang, F, John, M, Johnson, D, Jones, CR, Joram, C, Jost, B, Jurik, N, Kandybei, S, Karacson, M, Kariuki, JM, Karodia, S, Kazeev, N, Kecke, M, Keizer, F, Kelsey, M, Kenzie, M, Ketel, T, Khairullin, E, Khanji, B, Khurewathanakul, C, Kim, KE, Kirn, T, Kirsebom, VS, Klaver, S, Klimaszewski, K, Klimkovich, T, Koliiev, S, Kolpin, M, Kopecna, R, Koppenburg, P, Kostiuk, I, Kotriakhova, S, Kozeiha, M, Kravchuk, L, Kreps, M, Kress, F, Krokovny, P, Krupa, W, Krzemien, W, Kucewicz, W, Kucharczyk, M, Kudryavtsev, V, Kuonen, AK, Kvaratskheliya, T, Lacarrere, D, Lafferty, G, Lai, A, Lancierini, D, Lanfranchi, G, Langenbruch, C, Latham, T, Lazzeroni, C, Gac, R Le, Lefèvre, R, Leflat, A, Lemaitre, F, Leroy, O, Lesiak, T, Leverington, B, Li, P-R, Li, Y, Li, Z, Liang, X, Likhomanenko, T, Lindner, R, Lionetto, F, Lisovskyi, V, Liu, G, Liu, X, Loh, D, Loi, A, Longstaff, I, Lopes, JH, Lovell, GH, Lucchesi, D, Martinez, M Lucio, Luo, Y, 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, MW, Malde, S, Malecki, B, Malinin, A, Maltsev, T, Malygina, H, Manca, G, Mancinelli, G, Marangotto, D, Maratas, J, Marchand, JF, Marconi, U, Benito, C Marin, Marinangeli, M, Marino, P, Marks, J, Marshall, PJ, Martellotti, G, Martinelli, M, Santos, D Martinez, Vidal, F Martinez, Massafferri, A, Materok, M, Matev, R, Mathad, A, Mathe, Z, Matteuzzi, C, Mauri, A, Maurice, E, Maurin, B, McCann, M, McNab, A, McNulty, R, Mead, JV, Meadows, B, Meaux, C, Meinert, N, Melnychuk, D, Merk, M, Merli, A, Michielin, E, Milanes, DA, Millard, E, Minard, M-N, Minzoni, L, Mitzel, DS, Mödden, A, Mogini, A, Moise, RD, Mombächer, T, Monroy, IA, Monteil, S, Morandin, M, Morello, G, Morello, MJ, Morgunova, O, Moron, J, Morris, AB, Mountain, R, Muheim, F, Mukherjee, M, Mulder, M, Müller, D, Müller, J, Müller, K, Müller, V, Murphy, CH, Murray, D, Naik, P, Nakada, T, Nandakumar, R, Nandi, A, Nanut, T, Nasteva, I, Needham, M, Neri, N, Neubert, S, Neufeld, N, Newcombe, R, Nguyen, TD, Nguyen-Mau, C, Nieswand, S, Niet, R, Nikitin, N, Nogay, A, Nolte, NS, Oblakowska-Mucha, A, Obraztsov, V, Ogilvy, S, O'Hanlon, DP, Oldeman, R, Onderwater, CJG, Ossowska, A, Goicochea, JM Otalora, Ovsiannikova, T, Owen, P, Oyanguren, A, Pais, PR, Pajero, T, Palano, A, Palutan, M, Panshin, G, Papanestis, A, Pappagallo, M, Pappalardo, LL, Parker, W, Parkes, C, Passaleva, G, Pastore, A, Patel, M, Patrignani, C, Pearce, A, Pellegrino, A, Penso, G, Altarelli, M Pepe, Perazzini, S, Pereima, D, Perret, P, Pescatore, L, Petridis, K, Petrolini, A, Petrov, A, Petrucci, S, Petruzzo, M, Pietrzyk, B, Pietrzyk, G, Pikies, M, Pili, M, Pinci, D, Pinzino, J, Pisani, F, Piucci, A, Placinta, V, Playfer, S, Plews, J, Casasus, M Plo, Polci, F, Lener, M Poli, Poluektov, A, Polukhina, N, Polyakov, I, Polycarpo, E, Pomery, GJ, Ponce, S, Popov, A, Popov, D, Poslavskii, S, Price, E, Prisciandaro, J, Prouve, C, Pugatch, V, Navarro, A Puig, Pullen, H, Punzi, G, Qian, W, Qin, J, Quagliani, R, Quintana, B, Raab, NV, Rachwal, B, Rademacker, JH, Rama, M, Pernas, M Ramos, Rangel, MS, Ratnikov, F, Raven, G, Salzgeber, M Ravonel, Reboud, M, Redi, F, Reichert, S, Reiss, F, Alepuz, C Remon, Ren, Z, Renaudin, V, Ricciardi, S, Richards, S, Rinnert, K, Robbe, P, Robert, A, Rodrigues, AB, Rodrigues, E, Lopez, JA Rodriguez, Roehrken, M, Roiser, S, Rollings, A, Romanovskiy, V, Vidal, A Romero, Roth, JD, Rotondo, M, Rudolph, MS, Ruf, T, Vidal, J Ruiz, Silva, JJ Saborido, Sagidova, N, Saitta, B, Guimaraes, V Salustino, Gras, C Sanchez, Mayordomo, C Sanchez, Sedes, B Sanmartin, Santacesaria, R, Rios, C Santamarina, Santimaria, M, Santovetti, E, Sarpis, G, Sarti, A, Satriano, C, Satta, A, Saur, M, Savrina, D, Schael, S, Schellenberg, M, Schiller, M, Schindler, H, Schmelling, M, Schmelzer, T, Schmidt, B, Schneider, O, Schopper, A, Schreiner, HF, Schubiger, M, Schulte, S, Schune, MH, Schwemmer, R, Sciascia, B, Sciubba, A, Semennikov, A, Sepulveda, ES, Sergi, A, Serra, N, Serrano, J, Sestini, L, Seuthe, A, Seyfert, P, Shapkin, M, Shcheglov, Y, Shears, T, Shekhtman, L, Shevchenko, V, Shmanin, E, Siddi, BG, Coutinho, R Silva, Oliveira, L Silva de, Simi, G, Simone, S, Skiba, I, Skidmore, N, Skwarnicki, T, Slater, MW, Smeaton, JG, Smith, E, Smith, IT, Smith, M, Soares, M, Lavra, L Soares, Sokoloff, MD, Soler, FJP, Paula, B Souza De, Spaan, B, Norella, E Spadaro, Spradlin, P, Stagni, F, Stahl, M, Stahl, S, Stefko, P, Stefkova, S, Steinkamp, O, Stemmle, S, Stenyakin, O, Stepanova, M, Stevens, H, Stocchi, A, Stone, S, Storaci, B, Stracka, S, Stramaglia, ME, Straticiuc, M, Straumann, U, Strokov, S, Sun, J, Sun, L, Sun, Y, Swientek, K, Szabelski, A, Szumlak, T, Szymanski, M, Tang, Z, Tekampe, T, Tellarini, G, Teubert, F, Thomas, E, Tilley, MJ, Tisserand, V, T'Jampens, S, Tobin, M, Tolk, S, Tomassetti, L, Tonelli, D, Tou, DY, Aoude, R Tourinho Jadallah, Tournefier, E, Traill, M, Tran, MT, Trisovic, A, Tsaregorodtsev, A, Tuci, G, Tully, A, Tuning, N, Ukleja, A, Usachov, A, Ustyuzhanin, A, Uwer, U, Vagner, A, Vagnoni, V, Valassi, A, Valat, S, Valenti, G, Beuzekom, M van, Herwijnen, E van, Tilburg, J van, Veghel, M van, Gomez, R Vazquez, Regueiro, P Vazquez, Sierra, C Vázquez, Vecchi, S, Velthuis, JJ, Veltri, M, Veneziano, G, Venkateswaran, A, Vernet, M, Veronesi, M, Vesterinen, M, Barbosa, JV Viana, Vieira, D, Diaz, M Vieites, Viemann, H, Vilasis-Cardona, X, Vitkovskiy, A, Vitti, M, Volkov, V, Vollhardt, A, Bruch, D Vom, Voneki, B, Vorobyev, A, Vorobyev, V, Voropaev, N, Waldi, R, Walsh, J, Wang, J, Wang, M, Wang, Y, Wang, Z, Ward, DR, Wark, HM, Watson, NK, Websdale, D, Weiden, A, Weisser, C, Whitehead, M, Wilkinson, G, Wilkinson, M, Williams, I, Williams, M, Williams, MRJ, Williams, T, Wilson, FF, Winn, M, Wislicki, W, Witek, M, Wormser, G, Wotton, SA, Wyllie, K, Xiao, D, Xie, Y, Xu, A, Xu, M, Xu, Q, Xu, Z, Yang, Z, Yao, Y, Yeomans, LE, Yin, H, Yu, J, Yuan, X, Yushchenko, O, Zarebski, KA, Zavertyaev, M, Zhang, D, Zhang, L, Zhang, WC, Zhang, Y, Zhelezov, A, Zheng, Y, Zhu, X, Zhukov, V, Zonneveld, JB, and Zucchelli, S
Abstract: The first untagged decay-time-integrated amplitude analysis of $B^{0}_{s} \rightarrow K^{0}_{\textrm{S}} K^{\pm}\pi^{\mp}$ decays is performed using a sample corresponding to $3.0\,$fb$^{-1}$ of $pp$ collision data recorded with the LHCb detector during 2011 and 2012. The data are described with an amplitude model that contains contributions from the intermediate resonances $K^{*}(892)^{0,+}$, $K^*_2(1430)^{0,+}$ and $K^*_0(1430)^{0,+}$, and their charge conjugates. Measurements of the branching fractions of the decay modes $B^{0}_{s} \rightarrow K^{*}(892)^{\pm}K^{\mp}$ and $B^{0}_{s} \rightarrow K^{*}(892)^{0}\kern 0.2em\overline{\kern -0.2em K}{}^{0}, \kern 0.2em\overline{\kern -0.2em K}{}^{*}(892)^{0}K^{0}$ are in agreement with, and more precise than, previous results. The decays $B^{0}_{s} \rightarrow K^*_0(1430)^{\pm} K^{\mp}$ and $B^{0}_{s} \rightarrow K^{*}_{0}(1430)^{0}\kern 0.2em\overline{\kern -0.2em K}{}^{0}, \kern 0.2em\overline{\kern -0.2em K}{}^{*}_{0}(1430)^{0}K^{0}$ are observed for the first time, each with significance over 10 standard deviations.
Published: 2019

10. Test of Lepton Flavor Universality by the measurement of the $B^0 \to D^{*-} τ^+ ν_τ$ branching fraction using three-prong $τ$ decays

Author: collaboration, LHCb, Aaij, R, Adeva, B, Adinolfi, M, Ajaltouni, Z, Akar, S, Albrecht, J, Alessio, F, Alexander, M, Albero, A Alfonso, Ali, S, Alkhazov, G, Cartelle, P Alvarez, Jr, AA Alves, Amato, S, Amerio, S, Amhis, Y, An, L, Anderlini, L, Andreassi, G, Andreotti, M, Andrews, JE, Appleby, RB, Archilli, F, d'Argent, P, Romeu, J Arnau, Artamonov, A, Artuso, M, Aslanides, E, Auriemma, G, Baalouch, M, Babuschkin, I, Bachmann, S, Back, JJ, Badalov, A, Baesso, C, Baker, S, Balagura, V, Baldini, W, Baranov, A, Barlow, RJ, 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, LJ, 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, Beuzekom, M van, 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, TJV, 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 Calvo, Camboni, A, Campana, P, Perez, DH Campora, Capriotti, L, Carbone, A, Carboni, G, Cardinale, R, Cardini, A, Carniti, P, Carson, L, Akiba, K Carvalho, Casse, G, Cassina, L, Garcia, L Castillo, Cattaneo, M, Cavallero, G, Cenci, R, Chamont, D, Chapman, MG, Charles, M, Charpentier, Ph, Chatzikonstantinidis, G, Chefdeville, M, Chen, S, Cheung, SF, Chitic, S-G, Chobanova, V, Chrzaszcz, M, Chubykin, A, Ciambrone, P, Vidal, X Cid, Ciezarek, G, Clarke, PEL, Clemencic, M, Cliff, HV, Closier, J, Coco, V, 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, CM Costa, Couturier, B, Cowan, GA, Craik, DC, Crocombe, A, Torres, M Cruz, Currie, R, D'Ambrosio, C, Marinho, F Da Cunha, Dall'Occo, E, Dalseno, J, Davis, A, Francisco, O De Aguiar, Bruyn, K De, Capua, S De, Cian, M De, Miranda, JM De, Paula, L De, Serio, M De, Simone, P De, Dean, CT, Decamp, D, Buono, L Del, Dembinski, H-P, Demmer, M, Dendek, A, Derkach, D, Deschamps, O, Dettori, F, Dey, B, Canto, A Di, Nezza, P Di, Dijkstra, H, Dordei, F, Dorigo, M, Suárez, A Dosil, Douglas, L, Dovbnya, A, Dreimanis, K, Dufour, L, Dujany, G, Dungs, K, Durante, P, Dzhelyadin, R, Dziewiecki, M, Dziurda, A, Dzyuba, A, Déléage, N, Easo, S, Ebert, M, Egede, U, Egorychev, V, Eidelman, S, Eisenhardt, S, Eitschberger, U, Ekelhof, R, Eklund, L, Ely, S, Esen, S, Evans, HM, Evans, T, Falabella, A, Farley, N, Farry, S, Fay, R, Fazzini, D, Federici, L, Ferguson, D, Fernandez, G, Declara, P Fernandez, Prieto, A Fernandez, Ferrari, F, Rodrigues, F Ferreira, Ferro-Luzzi, M, Filippov, S, Fini, RA, Fiore, M, Fiorini, M, Firlej, M, Fitzpatrick, C, Fiutowski, T, Fleuret, F, Fohl, K, Fontana, M, Fontanelli, F, Forshaw, DC, Forty, R, Lima, V Franco, Frank, M, Frei, C, Fu, J, Funk, W, Furfaro, E, Färber, C, Gabriel, E, Torreira, A Gallas, Galli, D, Gallorini, S, Gambetta, S, Gandelman, M, Gandini, P, Gao, Y, Martin, LM Garcia, Pardiñas, J García, Tico, J Garra, Garrido, L, Garsed, PJ, Gascon, D, Gaspar, C, Gavardi, L, Gazzoni, G, Gerick, D, Gersabeck, E, Gersabeck, M, Gershon, T, Ghez, Ph, Gianì, S, Gibson, V, Girard, OG, Giubega, L, Gizdov, K, Gligorov, VV, Golubkov, D, Golutvin, A, Gomes, A, Gorelov, IV, Gotti, C, Govorkova, E, Grabowski, JP, Diaz, R Graciani, Cardoso, LA Granado, Graugés, E, Graverini, E, Graziani, G, Grecu, A, Greim, R, Griffith, P, Grillo, L, Gruber, L, Cazon, BR Gruberg, Grünberg, O, Gushchin, E, Guz, Yu, Gys, T, Göbel, C, Hadavizadeh, T, Hadjivasiliou, C, Haefeli, G, Haen, C, Haines, SC, Hamilton, B, Han, X, Hancock, TH, Hansmann-Menzemer, S, Harnew, N, Harnew, ST, Harrison, J, Hasse, C, Hatch, M, He, J, Hecker, M, Heinicke, K, Heister, A, Hennessy, K, Henrard, P, Henry, L, Herwijnen, E van, Heß, M, Hicheur, A, Hill, D, Hombach, C, Hopchev, PH, Huard, ZC, 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, CR, Joram, C, Jost, B, Jurik, N, Kandybei, S, Karacson, M, Kariuki, JM, 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, AK, Kurek, K, Kvaratskheliya, T, Lacarrere, D, Lafferty, G, Lai, A, Lanfranchi, G, Langenbruch, C, Latham, T, Lazzeroni, C, Gac, R Le, Leerdam, J van, Leflat, A, Lefrançois, J, Lefèvre, R, Lemaitre, F, Cid, E Lemos, Leroy, O, Lesiak, T, Leverington, B, Li, P-R, Li, T, Li, Y, Li, Z, Likhomanenko, T, Lindner, R, Lionetto, F, Liu, X, Loh, D, Loi, A, Longstaff, I, Lopes, JH, Lucchesi, D, Martinez, M Lucio, Luo, 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, MW, Malde, S, Malinin, A, Maltsev, T, Manca, G, Mancinelli, G, Manning, P, Marangotto, D, Maratas, J, Marchand, JF, Marconi, U, Benito, C Marin, Marinangeli, M, Marino, P, Marks, J, Martellotti, G, Martin, M, Martinelli, M, Santos, D Martinez, Vidal, F Martinez, Tostes, D Martins, Massacrier, LM, 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, JV, Meadows, B, Meaux, C, Meier, F, Meinert, N, Melnychuk, D, Merk, M, Merli, A, Michielin, E, Milanes, DA, Millard, E, Minard, M-N, Minzoni, L, Mitzel, DS, Mogini, A, Rodriguez, J Molina, Mombächer, T, Monroy, IA, Monteil, S, Morandin, M, Morello, MJ, Morgunova, O, Moron, J, Morris, AB, Mountain, R, Muheim, F, Mulder, M, Mussini, 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, TD, Nguyen-Mau, C, Nieswand, S, Niet, R, Nikitin, N, Nikodem, T, Nogay, A, O'Hanlon, DP, Oblakowska-Mucha, A, Obraztsov, V, Ogilvy, S, Oldeman, R, Onderwater, CJG, Ossowska, A, Goicochea, JM Otalora, Owen, P, Oyanguren, A, Pais, PR, Palano, A, Palutan, M, Papanestis, A, Pappagallo, M, Pappalardo, LL, Parker, W, Parkes, C, Passaleva, G, Pastore, A, Patel, M, Patrignani, C, Pearce, A, Pellegrino, A, Penso, G, Altarelli, M Pepe, Perazzini, S, Perret, P, Pescatore, L, Petridis, K, Petrolini, A, Petrov, A, Petruzzo, M, Olloqui, E Picatoste, Pietrzyk, B, Pikies, M, Pinci, D, Pisani, F, Pistone, A, Piucci, A, Placinta, V, Playfer, S, Casasus, M Plo, Polci, F, Lener, M Poli, Poluektov, A, Polyakov, I, Polycarpo, E, Pomery, GJ, Ponce, S, Popov, A, Popov, D, Poslavskii, S, Potterat, C, Price, E, Prisciandaro, J, Prouve, C, Pugatch, V, Navarro, A Puig, Pullen, H, Punzi, G, Qian, W, Quagliani, R, Quintana, B, Rachwal, B, Rademacker, JH, Rama, M, Pernas, M Ramos, Rangel, MS, Raniuk, I, Ratnikov, F, Raven, G, Salzgeber, M Ravonel, Reboud, M, Redi, F, Reichert, S, Reis, AC dos, Alepuz, C Remon, Renaudin, V, Ricciardi, S, Richards, S, Rihl, M, Rinnert, K, Molina, V Rives, Robbe, P, Rodrigues, AB, Rodrigues, E, Lopez, JA Rodriguez, Perez, P Rodriguez, Rogozhnikov, A, Roiser, S, Rollings, A, Romanovskiy, V, Vidal, A Romero, Ronayne, JW, Rotondo, M, Rudolph, MS, Ruf, T, Valls, P Ruiz, Vidal, J Ruiz, Silva, JJ Saborido, Sadykhov, E, Sagidova, N, Saitta, B, Guimaraes, V Salustino, Mayordomo, C Sanchez, Sedes, B Sanmartin, Santacesaria, R, Rios, C Santamarina, Santimaria, M, Santovetti, E, Sarpis, G, Sarti, A, Satriano, C, Satta, A, Saunders, DM, Savrina, D, Schael, S, Schellenberg, M, Schiller, M, Schindler, H, Schlupp, M, Schmelling, M, Schmelzer, T, Schmidt, B, Schneider, O, Schopper, A, Schreiner, HF, Schubert, K, Schubiger, M, Schune, M-H, Schwemmer, R, Sciascia, B, Sciubba, A, Semennikov, A, Sergi, A, Serra, N, Serrano, J, Sestini, L, Seyfert, P, Shapkin, M, Shapoval, I, Shcheglov, Y, Shears, T, Shekhtman, L, Shevchenko, V, Siddi, BG, Coutinho, R Silva, Oliveira, L Silva de, Simi, G, Simone, S, Sirendi, M, Skidmore, N, Skwarnicki, T, Smith, E, Smith, IT, Smith, J, Smith, M, Lavra, L Soares, Sokoloff, MD, Soler, FJP, Paula, B Souza De, Spaan, 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, ME, 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, Tilburg, J van, Tilley, MJ, Tisserand, V, Tobin, M, Tolk, S, Tomassetti, L, Tonelli, D, Toriello, F, Aoude, R Tourinho Jadallah, Tournefier, E, Traill, M, Tran, MT, Tresch, M, Trisovic, A, Tsaregorodtsev, A, Tsopelas, P, Tully, A, Tuning, N, Ukleja, A, Ustyuzhanin, A, Uwer, U, Vacca, C, Vagner, A, Vagnoni, V, Valassi, A, Valat, S, Valenti, G, Gomez, R Vazquez, Regueiro, P Vazquez, Vecchi, S, Veghel, M van, Velthuis, JJ, Veltri, M, Veneziano, G, Venkateswaran, A, Verlage, TA, Vernet, M, Vesterinen, M, Barbosa, JV Viana, Viaud, B, Vieira, D, Diaz, M Vieites, Viemann, H, Vilasis-Cardona, X, Vitti, M, Volkov, V, Vollhardt, A, Voneki, B, Vorobyev, A, Vorobyev, V, Voß, C, Vries, JA de, Sierra, C Vázquez, Waldi, R, Wallace, C, Wallace, R, Walsh, J, Wang, J, Ward, DR, Wark, HM, Watson, NK, Websdale, D, Weiden, A, Whitehead, M, Wicht, J, Wilkinson, G, Wilkinson, M, Williams, M, Williams, MP, Williams, T, Wilson, FF, Wimberley, J, Winn, M, Wishahi, J, Wislicki, W, Witek, M, Wormser, G, Wotton, SA, Wraight, K, Wyllie, K, Xie, Y, Xu, Z, Yang, Z, Yao, Y, Yin, H, Yu, J, Yuan, X, Yushchenko, O, Zarebski, KA, Zavertyaev, M, Zhang, L, Zhang, Y, Zhelezov, A, Zheng, Y, Zhu, X, Zhukov, V, Zonneveld, JB, and Zucchelli, S
Subjects: High Energy Physics::Experiment
Abstract: The ratio of branching fractions ${\cal{R}}(D^{*-})\equiv {\cal{B}}(B^0 \to D^{*-} \tau^+ \nu_{\tau})/{\cal{B}}(B^0 \to D^{*-} \mu^+\nu_{\mu})$ is measured using a data sample of proton-proton collisions collected with the LHCb detector at center-of-mass energies of 7 and 8 TeV, corresponding to an integrated luminosity of 3$~$fb$^{-1}$. The $\tau$ lepton is reconstructed with three charged pions in the final state. A novel method is used that exploits the different vertex topologies of signal and backgrounds to isolate samples of semitauonic decays of $b$ hadrons with high purity. Using the $B^0 \to D^{*-}\pi^+\pi^-\pi^+$ decay as the normalization channel, the ratio ${\cal{B}}(B^0 \to D^{*-} \tau^+ \nu_{\tau})/{\cal{B}}(B^0 \to D^{*-}\pi^+\pi^-\pi^+)$ is measured to be $1.97 \pm 0.13 \pm 0.18$, where the first uncertainty is statistical and the second systematic. An average of branching fraction measurements for the normalization channel is used to derive ${\cal{B}}(B^0 \to D^{*-} \tau^+ \nu_{\tau}) = (1.42 \pm 0.094 \pm 0.129 \pm 0.054) \%$, where the third uncertainty is due to the limited knowledge of ${\cal{B}}(B^0\to D^{*-}\pi^+\pi^-\pi^+)$. A test of lepton flavor universality is performed using the well-measured branching fraction ${\cal{B}}(B^0 \to D^{*-} \mu^+\nu_{\mu})$ to compute ${\cal{R}}(D^{*-}) = 0.291 \pm 0.019 \pm 0.026 \pm 0.013$, where the third uncertainty originates from the uncertainties on ${\cal{B}}(B^0 \to D^{*-}\pi^+\pi^-\pi^+)$ and ${\cal{B}}(B^0 \to D^{*-} \mu^+\nu_{\mu})$. This measurement is in agreement with the Standard Model prediction and with previous measurements.
Published: 2018

11. Test of lepton flavor universality by the measurement of the B0→D*−τ+ντ branching fraction using three-prong τ decays

Author: collaboration, LHCb, Aaij, R, Adeva, B, Adinolfi, M, Ajaltouni, Z, Akar, S, Albrecht, J, Alessio, F, Alexander, M, Albero, A Alfonso, Ali, S, Alkhazov, G, Cartelle, P Alvarez, Jr, AA Alves, Amato, S, Amerio, S, Amhis, Y, An, L, Anderlini, L, Andreassi, G, Andreotti, M, Andrews, JE, Appleby, RB, Archilli, F, d'Argent, P, Romeu, J Arnau, Artamonov, A, Artuso, M, Aslanides, E, Auriemma, G, Baalouch, M, Babuschkin, I, Bachmann, S, Back, JJ, Badalov, A, Baesso, C, Baker, S, Balagura, V, Baldini, W, Baranov, A, Barlow, RJ, 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, LJ, 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, Beuzekom, M van, 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, TJV, 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 Calvo, Camboni, A, Campana, P, Perez, DH Campora, Capriotti, L, Carbone, A, Carboni, G, Cardinale, R, Cardini, A, Carniti, P, Carson, L, Akiba, K Carvalho, Casse, G, Cassina, L, Garcia, L Castillo, Cattaneo, M, Cavallero, G, Cenci, R, Chamont, D, Chapman, MG, Charles, M, Charpentier, Ph, Chatzikonstantinidis, G, Chefdeville, M, Chen, S, Cheung, SF, Chitic, S-G, Chobanova, V, Chrzaszcz, M, Chubykin, A, Ciambrone, P, Vidal, X Cid, Ciezarek, G, Clarke, PEL, Clemencic, M, Cliff, HV, Closier, J, Coco, V, 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, CM Costa, Couturier, B, Cowan, GA, Craik, DC, Crocombe, A, Torres, M Cruz, Currie, R, D'Ambrosio, C, Marinho, F Da Cunha, Dall'Occo, E, Dalseno, J, Davis, A, Francisco, O De Aguiar, Bruyn, K De, Capua, S De, Cian, M De, Miranda, JM De, Paula, L De, Serio, M De, Simone, P De, Dean, CT, Decamp, D, Buono, L Del, Dembinski, H-P, Demmer, M, Dendek, A, Derkach, D, Deschamps, O, Dettori, F, Dey, B, Canto, A Di, Nezza, P Di, Dijkstra, H, Dordei, F, Dorigo, M, Suárez, A Dosil, Douglas, L, Dovbnya, A, Dreimanis, K, Dufour, L, Dujany, G, Dungs, K, Durante, P, Dzhelyadin, R, Dziewiecki, M, Dziurda, A, Dzyuba, A, Déléage, N, Easo, S, Ebert, M, Egede, U, Egorychev, V, Eidelman, S, Eisenhardt, S, Eitschberger, U, Ekelhof, R, Eklund, L, Ely, S, Esen, S, Evans, HM, Evans, T, Falabella, A, Farley, N, Farry, S, Fay, R, Fazzini, D, Federici, L, Ferguson, D, Fernandez, G, Declara, P Fernandez, Prieto, A Fernandez, Ferrari, F, Rodrigues, F Ferreira, Ferro-Luzzi, M, Filippov, S, Fini, RA, Fiore, M, Fiorini, M, Firlej, M, Fitzpatrick, C, Fiutowski, T, Fleuret, F, Fohl, K, Fontana, M, Fontanelli, F, Forshaw, DC, Forty, R, Lima, V Franco, Frank, M, Frei, C, Fu, J, Funk, W, Furfaro, E, Färber, C, Gabriel, E, Torreira, A Gallas, Galli, D, Gallorini, S, Gambetta, S, Gandelman, M, Gandini, P, Gao, Y, Martin, LM Garcia, Pardiñas, J García, Tico, J Garra, Garrido, L, Garsed, PJ, Gascon, D, Gaspar, C, Gavardi, L, Gazzoni, G, Gerick, D, Gersabeck, E, Gersabeck, M, Gershon, T, Ghez, Ph, Gianì, S, Gibson, V, Girard, OG, Giubega, L, Gizdov, K, Gligorov, VV, Golubkov, D, Golutvin, A, Gomes, A, Gorelov, IV, Gotti, C, Govorkova, E, Grabowski, JP, Diaz, R Graciani, Cardoso, LA Granado, Graugés, E, Graverini, E, Graziani, G, Grecu, A, Greim, R, Griffith, P, Grillo, L, Gruber, L, Cazon, BR Gruberg, Grünberg, O, Gushchin, E, Guz, Yu, Gys, T, Göbel, C, Hadavizadeh, T, Hadjivasiliou, C, Haefeli, G, Haen, C, Haines, SC, Hamilton, B, Han, X, Hancock, TH, Hansmann-Menzemer, S, Harnew, N, Harnew, ST, Harrison, J, Hasse, C, Hatch, M, He, J, Hecker, M, Heinicke, K, Heister, A, Hennessy, K, Henrard, P, Henry, L, Herwijnen, E van, Heß, M, Hicheur, A, Hill, D, Hombach, C, Hopchev, PH, Huard, ZC, 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, CR, Joram, C, Jost, B, Jurik, N, Kandybei, S, Karacson, M, Kariuki, JM, 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, AK, Kurek, K, Kvaratskheliya, T, Lacarrere, D, Lafferty, G, Lai, A, Lanfranchi, G, Langenbruch, C, Latham, T, Lazzeroni, C, Gac, R Le, Leerdam, J van, Leflat, A, Lefrançois, J, Lefèvre, R, Lemaitre, F, Cid, E Lemos, Leroy, O, Lesiak, T, Leverington, B, Li, P-R, Li, T, Li, Y, Li, Z, Likhomanenko, T, Lindner, R, Lionetto, F, Liu, X, Loh, D, Loi, A, Longstaff, I, Lopes, JH, Lucchesi, D, Martinez, M Lucio, Luo, 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, MW, Malde, S, Malinin, A, Maltsev, T, Manca, G, Mancinelli, G, Manning, P, Marangotto, D, Maratas, J, Marchand, JF, Marconi, U, Benito, C Marin, Marinangeli, M, Marino, P, Marks, J, Martellotti, G, Martin, M, Martinelli, M, Santos, D Martinez, Vidal, F Martinez, Tostes, D Martins, Massacrier, LM, 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, JV, Meadows, B, Meaux, C, Meier, F, Meinert, N, Melnychuk, D, Merk, M, Merli, A, 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V., Voß, C., de Vries, J.A., Vázquez Sierra, C., Waldi, 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., and Zucchelli, S.
Subjects: Particles and field, Physics and Astronomy (miscellaneous), QCD, HEP, NO, LHCb, Branching fraction, Hadron-Hadron scattering (experiments), QCD, Hadron-Hadron scattering (experiments), Electroweak interaction, Physic, High Energy Physics::Experiment, Branching fraction, LHC, Leptonic, semileptonic and radiative decay
Abstract: The ratio of branching fractions \ud R\ud (\ud D\ud *\ud −\ud )\ud ≡\ud B\ud (\ud B\ud 0\ud →\ud D\ud *\ud −\ud τ\ud +\ud ν\ud τ\ud )\ud /\ud B\ud (\ud B\ud 0\ud →\ud D\ud *\ud −\ud μ\ud +\ud ν\ud μ\ud )\ud is measured using a data sample of proton-proton collisions collected with the LHCb detector at center-of-mass energies of 7 and 8 TeV, corresponding to an integrated luminosity of \ud 3\ud \ud \ud fb\ud −\ud 1\ud . The \ud τ\ud lepton is reconstructed with three charged pions in the final state. A novel method is used that exploits the different vertex topologies of signal and backgrounds to isolate samples of semitauonic decays of \ud b\ud hadrons with high purity. Using the \ud B\ud 0\ud →\ud D\ud *\ud −\ud π\ud +\ud π\ud −\ud π\ud +\ud decay as the normalization channel, the ratio \ud B\ud (\ud B\ud 0\ud →\ud D\ud *\ud −\ud τ\ud +\ud ν\ud τ\ud )\ud /\ud B\ud (\ud B\ud 0\ud →\ud D\ud *\ud −\ud π\ud +\ud π\ud −\ud π\ud +\ud )\ud is measured to be \ud 1.97\ud ±\ud 0.13\ud ±\ud 0.18\ud , where the first uncertainty is statistical and the second systematic. An average of branching fraction measurements for the normalization channel is used to derive \ud B\ud (\ud B\ud 0\ud →\ud D\ud *\ud −\ud τ\ud +\ud ν\ud τ\ud )\ud =\ud (\ud 1.42\ud ±\ud 0.094\ud ±\ud 0.129\ud ±\ud 0.054\ud )\ud %\ud , where the third uncertainty is due to the limited knowledge of \ud B\ud (\ud B\ud 0\ud →\ud D\ud *\ud −\ud π\ud +\ud π\ud −\ud π\ud +\ud )\ud . A test of lepton flavor universality is performed using the well-measured branching fraction \ud B\ud (\ud B\ud 0\ud →\ud D\ud *\ud −\ud μ\ud +\ud ν\ud μ\ud )\ud to compute \ud R\ud (\ud D\ud *\ud −\ud )\ud =\ud 0.291\ud ±\ud 0.019\ud ±\ud 0.026\ud ±\ud 0.013\ud , where the third uncertainty originates from the uncertainties on \ud B\ud (\ud B\ud 0\ud →\ud D\ud *\ud −\ud π\ud +\ud π\ud −\ud π\ud +\ud )\ud and \ud B\ud (\ud B\ud 0\ud →\ud D\ud *\ud −\ud μ\ud +\ud ν\ud μ\ud )\ud . This measurement is in agreement with the Standard Model prediction and with previous measurements.
Published: 2018

12. First measurement of the $CP$-violating phase $φ_s^{d\overline{d}}$ in $B_s^0\to(K^+π^-)(K^-π^+)$ decays

Author: collaboration, LHCb, Aaij, R, Adeva, B, Adinolfi, M, Ajaltouni, Z, Akar, S, Albrecht, J, Alessio, F, Alexander, M, Albero, A Alfonso, Ali, S, Alkhazov, G, Cartelle, P Alvarez, Jr, AA Alves, Amato, S, Amerio, S, Amhis, Y, An, L, Anderlini, L, Andreassi, G, Andreotti, M, Andrews, JE, Appleby, RB, Archilli, F, d'Argent, P, Romeu, J Arnau, Artamonov, A, Artuso, M, Aslanides, E, Atzeni, M, Auriemma, G, Baalouch, M, Babuschkin, I, Bachmann, S, Back, JJ, Badalov, A, Baesso, C, Baker, S, Balagura, V, Baldini, W, Baranov, A, Barlow, RJ, 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, LJ, 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, MO, Beuzekom, M van, Bezshyiko, Ia, Bifani, S, Billoir, P, Birnkraut, A, Bizzeti, A, Bjørn, M, Blake, T, Blanc, F, Blusk, S, Bocci, V, Boettcher, T, Bondar, A, Bondar, N, Bordyuzhin, I, Borghi, S, Borisyak, M, Borsato, M, Bossu, F, Boubdir, M, Bowcock, TJV, Bowen, E, Bozzi, C, Braun, S, 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 Calvo, Camboni, A, Campana, P, Perez, DH Campora, Capriotti, L, Carbone, A, Carboni, G, Cardinale, R, Cardini, A, Carniti, P, Carson, L, Akiba, K Carvalho, Casse, G, Cassina, L, Cattaneo, M, Cavallero, G, Cenci, R, Chamont, D, Chapman, MG, Charles, M, Charpentier, Ph, Chatzikonstantinidis, G, Chefdeville, M, Chen, S, Cheung, SF, Chitic, S-G, Chobanova, V, Chrzaszcz, M, Chubykin, A, Ciambrone, P, Vidal, X Cid, Ciezarek, G, Clarke, PEL, Clemencic, M, Cliff, HV, Closier, J, Coco, V, Cogan, J, Cogneras, E, Cogoni, V, Cojocariu, L, Collins, P, Colombo, T, Comerma-Montells, A, Contu, A, Coombs, G, Coquereau, S, Corti, G, Corvo, M, Sobral, CM Costa, Couturier, B, Cowan, GA, Craik, DC, Crocombe, A, Torres, M Cruz, Currie, R, D'Ambrosio, C, Marinho, F Da Cunha, Silva, CL Da, Dall'Occo, E, Dalseno, J, Davis, A, Francisco, O De Aguiar, Bruyn, K De, Capua, S De, Cian, M De, Miranda, JM De, Paula, L De, Serio, M De, Simone, P De, Dean, CT, Decamp, D, Buono, L Del, Dembinski, H-P, Demmer, M, Dendek, A, Derkach, D, Deschamps, O, Dettori, F, Dey, B, Canto, A Di, Nezza, P Di, Dijkstra, H, Dordei, F, Dorigo, M, Suárez, A Dosil, Douglas, L, Dovbnya, A, Dreimanis, K, Dufour, L, Dujany, G, Durante, P, Durham, JM, Dutta, D, Dzhelyadin, R, Dziewiecki, M, Dziurda, A, Dzyuba, A, Easo, S, Egede, U, Egorychev, V, Eidelman, S, Eisenhardt, S, Eitschberger, U, Ekelhof, R, Eklund, L, Ely, S, Esen, S, Evans, HM, Evans, T, Falabella, A, Farley, N, Farry, S, Fazzini, D, Federici, L, Ferguson, D, Fernandez, G, Declara, P Fernandez, Prieto, A Fernandez, Ferrari, F, Lopes, L Ferreira, Rodrigues, F Ferreira, Ferro-Luzzi, M, Filippov, S, Fini, RA, Fiorini, M, 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L, Zhang, Y, Zhelezov, A, Zheng, Y, Zhu, X, Zhukov, V, Zonneveld, JB, and Zucchelli, S
Abstract: A flavour-tagged decay-time-dependent amplitude analysis of $B_s^0\to(K^+\pi^-)(K^-\pi^+)$ decays is presented in the $K^{\pm}\pi^{\mp}$ mass range from 750 to 1600 MeV$/c^2$. The analysis uses $pp$ collision data collected with the LHCb detector at centre-of-mass energies of $7$ and $8$ TeV, corresponding to an integrated luminosity of $3.0$ fb$^{-1}$. Several quasi-two-body decay modes are considered, corresponding to $K^{\pm}\pi^{\mp}$ combinations with spin 0, 1 and 2, which are dominated by the $K_0^*(800)^0$ and $K_0^*(1430)^0$, the $K^*(892)^0$ and the $K_2^*(1430)^0$ resonances, respectively. The longitudinal polarisation fraction for the $B_s^0\to K^*(892)^0\overline{K}^*(892)^0$ decay is measured as $f_L=0.208 \pm 0.032 \pm 0.046$, where the first uncertainty is statistical and the second is systematic. The first measurement of the mixing-induced $CP$-violating phase, $\phi_s^{d\overline{d}}$, in $b\to d\overline{d}s$ transitions is performed, yielding a value of $\phi_s^{d\overline{d}}=-0.10$ $\pm$ $0.13$ (stat) $\pm$ $0.14$ (syst) rad.
Published: 2017

13. Updated branching fraction measurements of $B^0_{(s)} \to K_{\mathrm{\scriptscriptstyle S}}^0 h^+ h^{\prime -}$ decays

Author: collaboration, LHCb, Aaij, R, Adeva, B, Adinolfi, M, Ajaltouni, Z, Akar, S, Albrecht, J, Alessio, F, Alexander, M, Ali, S, Alkhazov, G, Cartelle, P Alvarez, Jr, AA Alves, Amato, S, Amerio, S, Amhis, Y, An, L, Anderlini, L, Andreassi, G, Andreotti, M, Andrews, JE, Appleby, RB, Archilli, F, d'Argent, P, Romeu, J Arnau, Artamonov, A, Artuso, M, Aslanides, E, Auriemma, G, Baalouch, M, Babuschkin, I, Bachmann, S, Back, JJ, Badalov, A, Baesso, C, Baker, S, Balagura, V, Baldini, W, Baranov, A, Barlow, RJ, Barschel, C, Barsuk, S, Barter, W, Baryshnikov, F, Baszczyk, M, Batozskaya, V, Batsukh, B, Battista, V, Bay, A, Beaucourt, L, Beddow, J, Bedeschi, F, Bediaga, I, Beiter, A, Bel, LJ, Bellee, V, Belloli, N, Belous, K, Belyaev, I, Ben-Haim, E, Bencivenni, G, Benson, S, Beranek, S, Berezhnoy, A, Bernet, R, Bertolin, A, Betancourt, C, Betti, F, Bettler, M-O, Beuzekom, M van, Bezshyiko, Ia, Bifani, S, Billoir, P, Birnkraut, A, Bitadze, A, Bizzeti, A, Blake, T, Blanc, F, Blouw, J, Blusk, S, 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Raven, G, Salzgeber, M Ravonel, Reboud, M, Redi, F, Reichert, S, Reis, AC dos, Alepuz, C Remon, Renaudin, V, Ricciardi, S, Richards, S, Rihl, M, Rinnert, K, Molina, V Rives, Robbe, P, Rodrigues, AB, Rodrigues, E, Lopez, JA Rodriguez, Perez, P Rodriguez, Rogozhnikov, A, Roiser, S, Rollings, A, Romanovskiy, V, Vidal, A Romero, Ronayne, JW, Rotondo, M, Rudolph, MS, Ruf, T, Valls, P Ruiz, Silva, JJ Saborido, Sadykhov, E, Sagidova, N, Saitta, B, Guimaraes, V Salustino, Gonzalo, D Sanchez, Mayordomo, C Sanchez, Sedes, B Sanmartin, Santacesaria, R, Rios, C Santamarina, Santimaria, M, Santovetti, E, Sarti, A, Satriano, C, Satta, A, Saunders, DM, Savrina, D, Schael, S, Schellenberg, M, Schiller, M, Schindler, H, Schlupp, M, Schmelling, M, Schmelzer, T, Schmidt, B, Schneider, O, Schopper, A, Schreiner, HF, Schubert, K, Schubiger, M, Schune, M-H, Schwemmer, R, Sciascia, B, Sciubba, A, Semennikov, A, Sergi, A, Serra, N, Serrano, J, Sestini, L, Seyfert, P, Shapkin, M, Shapoval, I, Shcheglov, Y, 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A, Valat, S, Valenti, G, Gomez, R Vazquez, Regueiro, P Vazquez, Vecchi, S, Veghel, M van, Velthuis, JJ, Veltri, M, Veneziano, G, Venkateswaran, A, Verlage, TA, Vernet, M, Vesterinen, M, Barbosa, JV Viana, Viaud, B, Vieira, D, Diaz, M Vieites, Viemann, H, Vilasis-Cardona, X, Vitti, M, Volkov, V, Vollhardt, A, Voneki, B, Vorobyev, A, Vorobyev, V, Voß, C, Vries, JA de, Sierra, C Vázquez, Waldi, R, Wallace, C, Wallace, R, Walsh, J, Wang, J, Ward, DR, Wark, HM, Watson, NK, Websdale, D, Weiden, A, Whitehead, M, Wicht, J, Wilkinson, G, Wilkinson, M, Williams, M, Williams, MP, Williams, T, Wilson, FF, Wimberley, J, Winn, MA, Wishahi, J, Wislicki, W, Witek, M, Wormser, G, Wotton, SA, Wraight, K, Wyllie, K, Xie, Y, Xing, Z, Xu, Z, Yang, Z, Yao, Y, Yin, H, Yu, J, Yuan, X, Yushchenko, O, Zarebski, KA, Zavertyaev, M, Zhang, L, Zhang, Y, Zhelezov, A, Zheng, Y, Zhu, X, Zhukov, V, Zonneveld, JB, Zucchelli, S, 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 l'Accélérateur Linéaire (LAL), Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-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 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), 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), LHCb, Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Clermont Auvergne (UCA)-Centre National de la Recherche Scientifique (CNRS), Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Aix Marseille Université (AMU), Laboratoire d'Annecy de Physique des Particules (LAPP/Laboratoire d'Annecy-le-Vieux de Physique des Particules), Centre National de la Recherche Scientifique (CNRS)-Université Savoie Mont Blanc (USMB [Université de Savoie] [Université de Chambéry])-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris Diderot - Paris 7 (UPD7)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS), Laboratoire de Physique de Clermont ( LPC ), Institut National de Physique Nucléaire et de Physique des Particules du CNRS ( IN2P3 ) -Université Clermont Auvergne ( UCA ) -Centre National de la Recherche Scientifique ( CNRS ), Laboratoire de l'Accélérateur Linéaire ( LAL ), Université Paris-Sud - Paris 11 ( UP11 ) -Institut National de Physique Nucléaire et de Physique des Particules du CNRS ( IN2P3 ) -Centre National de la Recherche Scientifique ( CNRS ), Centre de Physique des Particules de Marseille ( CPPM ), Centre National de la Recherche Scientifique ( CNRS ) -Institut National de Physique Nucléaire et de Physique des Particules du CNRS ( IN2P3 ) -Aix Marseille Université ( AMU ), Laboratoire d'Annecy de Physique des Particules ( LAPP/Laboratoire d'Annecy-le-Vieux de Physique des Particules ), 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 ), Laboratoire de Physique Nucléaire et de Hautes Énergies ( LPNHE ), Université Pierre et Marie Curie - Paris 6 ( UPMC ) -Institut National de Physique Nucléaire et de Physique des Particules du CNRS ( IN2P3 ) -Université Paris Diderot - Paris 7 ( UPD7 ) -Centre National de la Recherche Scientifique ( CNRS ), Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Sud - Paris 11 (UP11), and Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Université de Paris (UP)
Subjects: p p: scattering, +K0%28S%29+pi%2B+pi%22">B/s0 --> K0(S) pi+ pi, +K0%28S%29+K%2B+K%22">B0 --> K0(S) K+ K, FOS: Physical sciences, S086:Desig=63, B physics, +K0%28S%29+K%2B+pi%22">B0 --> K0(S) K+ pi, High Energy Physics - Experiment, High Energy Physics - Experiment (hep-ex), Flavor physics, [ PHYS.HEXP ] Physics [physics]/High Energy Physics - Experiment [hep-ex], Hadron-Hadron scattering (experiments), [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], S042:Desig=228, B0: hadronic decay, +K0%28S%29+K-+pi%2B%22">B0 --> K0(S) K- pi+, hep-ex, branching ratio: ratio: measured, S086.62, S086.63, phantom, S042:Desig=80, S086.61, S042:Desig=81, LHC-B, CERN LHC Coll, S086:Desig=61, S042.80, S086:Desig=62, B/s0: hadronic decay, S042.81, High Energy Physics::Experiment, Branching fraction, +K0%28S%29+pi%2B+pi%22">B0 --> K0(S) pi+ pi, p p: colliding beams, Particle Physics - Experiment, hadronization, S042.228, experimental results
Abstract: The charmless three-body decays $B^0_{(s)} \to K_{\mathrm{\scriptscriptstyle S}}^0 h^+ h^{\prime -}$ (where $h^{(\prime)} = ��, K$) are analysed using a sample of $pp$ collision data recorded by the LHCb experiment, corresponding to an integrated luminosity of $3\mbox{fb}^{-1}$. The branching fractions are measured relative to that of the $B^0 \to K_{\mathrm{\scriptscriptstyle S}}^0 ��^{+} ��^{-}$ decay, and are determined to be: \begin{eqnarray*} \frac{{\cal B}(B^0\rightarrow K^0_{\rm S}K^{\pm}��^{\mp})}{{\cal B}(B^0\rightarrow K^0_{\rm S}��^{+}��^{-})} = {} & 0.123 \pm 0.009 \; \mathrm{\,(stat)}\; \pm 0.015 \; \mathrm{\,(syst)}\,, \frac{{\cal B}(B^0\rightarrow K^0_{\rm S}K^{+}K^{-})} {{\cal B}(B^0\rightarrow K^0_{\rm S}��^{+}��^{-})} = {} & 0.549 \pm 0.018 \; \mathrm{\,(stat)}\; \pm 0.033 \; \mathrm{\,(syst)}\,, \frac{{\cal B}(B_{s}^0\rightarrow K^0_{\rm S}��^{+}��^{-})}{{\cal B}(B^0\rightarrow K^0_{\rm S}��^{+}��^{-})} = {} & 0.191 \pm 0.027 \; \mathrm{\,(stat)}\; \pm 0.031 \; \mathrm{\,(syst)}\; \pm 0.011 \; (f_s/f_d) \,, \frac{{\cal B}(B_{s}^0\rightarrow K^0_{\rm S}K^{\pm}��^{\mp})} {{\cal B}(B^0\rightarrow K^0_{\rm S}��^{+}��^{-})} = {} & 1.70\phantom{0} \pm 0.07\phantom{0} \; \mathrm{\,(stat)} \; \pm 0.11\phantom{0} \; \mathrm{\,(syst)}\; \pm 0.10\phantom{0} \; (f_s/f_d) \,, \frac{{\cal B}(B_{s}^0\rightarrow K^0_{\rm S}K^{+}K^{-})}{{\cal B}(B^0\rightarrow K^0_{\rm S}��^{+}��^{-})} \in {} & [0.008 - 0.051] \rm ~at~90\%~confidence~level, \end{eqnarray*} where $f_s/f_d$ represents the ratio of hadronisation fractions of the $B^0_s$ and $B^0$ mesons., 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-2017-010.html
Published: 2017

14. Measurement of the $B_{s}^{0} \rightarrow D_{s}^{()+}D_{s}^{()-}$ branching fractions

Author: collaboration, LHCb, Aaij, R, Beteta, C Abellán, Adeva, B, Adinolfi, M, Affolder, A, Ajaltouni, Z, Akar, S, Albrecht, J, Alessio, F, Alexander, M, Ali, S, Alkhazov, G, Cartelle, P Alvarez, Jr, AA Alves, Amato, S, Amerio, S, Amhis, Y, An, L, Anderlini, L, Andreassi, G, Andreotti, M, Andrews, JE, Appleby, RB, Gutierrez, O Aquines, Archilli, F, d'Argent, P, Artamonov, A, Artuso, M, Aslanides, E, Auriemma, G, Baalouch, M, Bachmann, S, Back, JJ, Badalov, A, Baesso, C, Baldini, W, Barlow, RJ, Barschel, C, Barsuk, S, Barter, W, Batozskaya, V, Battista, V, Bay, A, Beaucourt, L, Beddow, J, Bedeschi, F, Bediaga, I, Bel, LJ, Bellee, V, Belloli, N, Belyaev, I, Ben-Haim, E, Bencivenni, G, Benson, S, Benton, J, Berezhnoy, A, Bernet, R, Bertolin, A, Bettler, M-O, Beuzekom, M van, Bifani, S, Billoir, P, Bird, T, Birnkraut, A, Bizzeti, A, Blake, T, Blanc, F, Blouw, J, Blusk, S, Bocci, V, Bondar, A, Bondar, N, Bonivento, W, Borghi, S, Borisyak, M, Borsato, M, Bowcock, TJV, Bowen, E, Bozzi, C, 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Palutan, M, Panman, J, Papanestis, A, Pappagallo, M, Pappalardo, LL, Pappenheimer, C, Parker, W, Parkes, C, Passaleva, G, Patel, GD, Patel, M, Patrignani, C, Pearce, A, Pellegrino, A, Penso, G, Altarelli, M Pepe, Perazzini, S, Perret, P, Pescatore, L, Petridis, K, Petrolini, A, Petruzzo, M, Olloqui, E Picatoste, Pietrzyk, B, Pikies, M, Pinci, D, Pistone, A, Piucci, A, Playfer, S, Casasus, M Plo, Poikela, T, Polci, F, Poluektov, A, Polyakov, I, Polycarpo, E, Popov, A, Popov, D, Popovici, B, Potterat, C, Price, E, Price, JD, Prisciandaro, J, Pritchard, A, Prouve, C, Pugatch, V, Navarro, A Puig, Punzi, G, Qian, W, Quagliani, R, Rachwal, B, Rademacker, JH, Rama, M, Pernas, M Ramos, Rangel, MS, Raniuk, I, Rauschmayr, N, Raven, G, Redi, F, Reichert, S, Reis, AC dos, Renaudin, V, Ricciardi, S, Richards, S, Rihl, M, Rinnert, K, Molina, V Rives, Robbe, P, Rodrigues, AB, Rodrigues, E, Lopez, JA Rodriguez, Perez, P Rodriguez, Roiser, S, Romanovsky, V, Vidal, A Romero, Ronayne, JW, Rotondo, M, Ruf, T, Valls, P Ruiz, Silva, JJ Saborido, Sagidova, N, Saitta, B, Guimaraes, V Salustino, Mayordomo, C Sanchez, Sedes, B Sanmartin, Santacesaria, R, Rios, C Santamarina, Santimaria, M, Santovetti, E, Sarti, A, Satriano, C, Satta, A, Saunders, DM, Savrina, D, Schael, S, Schiller, M, Schindler, H, Schlupp, M, Schmelling, M, Schmelzer, T, Schmidt, B, Schneider, O, Schopper, A, Schubiger, M, Schune, M-H, Schwemmer, R, Sciascia, B, Sciubba, A, Semennikov, A, Sergi, A, Serra, N, Serrano, J, Sestini, L, Seyfert, P, Shapkin, M, Shapoval, I, Shcheglov, Y, Shears, T, Shekhtman, L, Shevchenko, V, Shires, A, Siddi, BG, Coutinho, R Silva, Oliveira, L Silva de, Simi, G, Sirendi, M, Skidmore, N, Skwarnicki, T, Smith, E, Smith, IT, Smith, J, Smith, M, Snoek, H, Sokoloff, MD, Soler, FJP, Soomro, F, Souza, D, Paula, B Souza De, Spaan, B, Spradlin, P, Sridharan, S, Stagni, F, Stahl, M, Stahl, S, Stefkova, S, Steinkamp, O, Stenyakin, O, Stevenson, S, Stoica, S, Stone, S, Storaci, B, Stracka, S, Straticiuc, M, Straumann, U, Sun, L, Sutcliffe, W, Swientek, K, Swientek, S, Syropoulos, V, Szczekowski, M, Szumlak, T, T'Jampens, S, Tayduganov, A, Tekampe, T, Tellarini, G, Teubert, F, Thomas, C, Thomas, E, Tilburg, J van, Tisserand, V, Tobin, M, Todd, J, Tolk, S, Tomassetti, L, Tonelli, D, Topp-Joergensen, S, Torr, N, Tournefier, E, Tourneur, S, Trabelsi, K, Traill, M, Tran, MT, Tresch, M, Trisovic, A, Tsaregorodtsev, A, Tsopelas, P, Tuning, N, Ukleja, A, Ustyuzhanin, A, Uwer, U, Vacca, C, Vagnoni, V, Valenti, G, Vallier, A, Gomez, R Vazquez, Regueiro, P Vazquez, Sierra, C Vázquez, Vecchi, S, Veghel, M van, Velthuis, JJ, Veltri, M, Veneziano, G, Vesterinen, M, Viaud, B, Vieira, D, Diaz, M Vieites, Vilasis-Cardona, X, Volkov, V, Vollhardt, A, Voong, D, Vorobyev, A, Vorobyev, V, Voß, C, Vries, JA de, Waldi, R, Wallace, C, Wallace, R, Walsh, J, Wang, J, Ward, DR, Watson, NK, Websdale, D, Weiden, A, Whitehead, M, Wicht, J, Wilkinson, G, Wilkinson, M, Williams, M, Williams, MP, Williams, T, Wilson, FF, Wimberley, J, Wishahi, J, Wislicki, W, Witek, M, Wormser, G, Wotton, SA, Wraight, K, Wright, S, Wyllie, K, Xie, Y, Xu, Z, Yang, Z, Yu, J, Yuan, X, Yushchenko, O, Zangoli, M, Zavertyaev, M, Zhang, L, Zhang, Y, Zhelezov, A, Zhokhov, A, Zhong, L, Zhukov, V, Zucchelli, S, Laboratoire de l'Accélérateur Linéaire (LAL), Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-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), 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), LHCb, and Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Sud - Paris 11 (UP11)
Subjects: High Energy Physics - Experiment (hep-ex), [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], FOS: Physical sciences, Particle Physics - Experiment, High Energy Physics - Experiment
Abstract: The branching fraction of the decay $B_{s}^{0} \rightarrow D_{s}^{(*)+}D_{s}^{(*)-}$ is measured using $pp$ collision data corresponding to an integrated luminosity of $1.0fb^{-1}$, collected using the LHCb detector at a centre-of-mass energy of $7$TeV. It is found to be \begin{align*} {\mathcal{B}}(B_{s}^{0}\rightarrow~D_{s}^{(*)+}D_{s}^{(*)-}) = (3.05 \pm 0.10 \pm 0.20 \pm 0.34)\%, \end{align*} where the uncertainties are statistical, systematic, and due to the normalisation channel, respectively. The branching fractions of the individual decays corresponding to the presence of one or two $D^{*\pm}_{s}$ are also measured. The individual branching fractions are found to be \begin{align*} {\mathcal{B}}(B_{s}^{0}\rightarrow~D_{s}^{*\pm}D_{s}^{\mp}) = (1.35 \pm 0.06 \pm 0.09 \pm 0.15)\%, \newline{\mathcal{B}}(B_{s}^{0}\rightarrow~D_{s}^{*+}D_{s}^{*-}) = (1.27 \pm 0.08 \pm 0.10 \pm 0.14)\%. \end{align*} All three results are the most precise determinations to date., 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-2015-053.html
Published: 2016

15. Observation of the $B_s^0 \rightarrow J/ψφφ$ decay

Author: collaboration, LHCb, Aaij, R, Adeva, B, Adinolfi, M, Affolder, A, Ajaltouni, Z, Akar, S, Albrecht, J, Alessio, F, Alexander, M, Ali, S, Alkhazov, G, Cartelle, P Alvarez, Jr, AA Alves, Amato, S, Amerio, S, Amhis, Y, An, L, Anderlini, L, Anderson, J, Andreassi, G, Andreotti, M, Andrews, JE, Appleby, RB, Gutierrez, O Aquines, Archilli, F, d'Argent, P, Artamonov, A, Artuso, M, Aslanides, E, Auriemma, G, Baalouch, M, Bachmann, S, Back, JJ, Badalov, A, Baesso, C, Baldini, W, Barlow, RJ, Barschel, C, Barsuk, S, Barter, W, Batozskaya, V, Battista, V, Bay, A, Beaucourt, L, Beddow, J, Bedeschi, F, Bediaga, I, Bel, LJ, Bellee, V, Belloli, N, Belyaev, I, Ben-Haim, E, Bencivenni, G, Benson, S, Benton, J, Berezhnoy, A, Bernet, R, Bertolin, A, Bettler, M-O, Beuzekom, M van, Bien, A, Bifani, S, Billoir, P, Bird, T, Birnkraut, A, Bizzeti, A, Blake, T, Blanc, F, Blouw, J, Blusk, S, Bocci, V, Bondar, A, Bondar, N, Bonivento, W, Borghi, S, Borsato, M, Bowcock, TJV, Bowen, E, Bozzi, C, Braun, S, Britsch, M, Britton, T, Brodzicka, J, Brook, NH, Bursche, A, Buytaert, J, Cadeddu, S, Calabrese, R, Calvi, M, Gomez, M Calvo, Campana, P, Perez, D Campora, Capriotti, L, Carbone, A, Carboni, G, Cardinale, R, Cardini, A, Carniti, P, Carson, L, Akiba, K Carvalho, Casse, G, Cassina, L, Garcia, L Castillo, Cattaneo, M, Cauet, Ch, Cavallero, G, Cenci, R, Charles, M, Charpentier, Ph, Chefdeville, M, Chen, S, Cheung, S-F, Chiapolini, N, Chrzaszcz, M, Vidal, X Cid, Ciezarek, G, Clarke, PEL, Clemencic, M, Cliff, HV, Closier, J, Coco, V, Cogan, J, Cogneras, E, Cogoni, V, Cojocariu, L, Collazuol, G, Collins, P, Comerma-Montells, A, Contu, A, Cook, A, Coombes, M, Coquereau, S, Corti, G, Corvo, M, Couturier, B, Cowan, GA, Craik, DC, Crocombe, A, Torres, M Cruz, Cunliffe, S, Currie, R, D'Ambrosio, C, Dall'Occo, E, Dalseno, J, David, PNY, Davis, A, Bruyn, K De, Capua, S De, Cian, M De, Miranda, JM De, Paula, L De, Simone, P De, Dean, C-T, Decamp, D, Deckenhoff, M, Buono, L Del, Déléage, N, Demmer, M, Derkach, D, Deschamps, O, Dettori, F, Dey, B, Canto, A Di, Ruscio, F Di, Dijkstra, H, Donleavy, S, Dordei, F, Dorigo, M, Suárez, A Dosil, Dossett, D, Dovbnya, A, Dreimanis, K, Dufour, L, Dujany, G, Dupertuis, F, Durante, P, Dzhelyadin, R, Dziurda, A, Dzyuba, A, Easo, S, Egede, U, Egorychev, V, Eidelman, S, Eisenhardt, S, Eitschberger, U, Ekelhof, R, Eklund, L, Rifai, I El, Elsasser, Ch, Ely, S, Esen, S, Evans, HM, Evans, T, Falabella, A, Färber, C, Farley, N, Farry, S, Fay, R, Ferguson, D, Albor, V Fernandez, Ferrari, F, Rodrigues, F Ferreira, Ferro-Luzzi, M, Filippov, S, Fiore, M, Fiorini, M, Firlej, M, Fitzpatrick, C, Fiutowski, T, Fohl, K, Fol, P, Fontana, M, Fontanelli, F, Forty, R, Francisco, O, Frank, M, Frei, C, Frosini, M, Fu, J, Furfaro, E, Torreira, A Gallas, Galli, D, Gallorini, S, Gambetta, S, Gandelman, M, Gandini, P, Gao, Y, Pardiñas, J García, Tico, J Garra, Garrido, L, Gascon, D, Gaspar, C, Gauld, R, Gavardi, L, Gazzoni, G, Geraci, A, Gerick, D, Gersabeck, E, Gersabeck, M, Gershon, T, Ghez, Ph, Gianelle, A, Gianì, S, Gibson, V, Girard, OG, Giubega, L, Gligorov, VV, Göbel, C, Golubkov, D, Golutvin, A, Gomes, A, Gotti, C, Gándara, M Grabalosa, Diaz, R Graciani, Cardoso, LA Granado, Graugés, E, Graverini, E, Graziani, G, Grecu, A, Greening, E, Gregson, S, Griffith, P, Grillo, L, Grünberg, O, Gui, B, Gushchin, E, Guz, Yu, Gys, T, Hadavizadeh, T, Hadjivasiliou, C, Haefeli, G, Haen, C, Haines, SC, Hall, S, Hamilton, B, Han, X, Hansmann-Menzemer, S, Harnew, N, Harnew, ST, Harrison, J, He, J, Head, T, Heijne, V, Hennessy, K, Henrard, P, Henry, L, Morata, JA Hernando, Herwijnen, E van, Heß, M, Hicheur, A, Hill, D, Hoballah, M, Hombach, C, Hulsbergen, W, Humair, T, Hussain, N, Hutchcroft, D, Hynds, D, Idzik, M, Ilten, P, Jacobsson, R, Jaeger, A, Jalocha, J, Jans, E, Jawahery, A, Jing, F, John, M, Johnson, D, Jones, CR, Joram, C, Jost, B, Jurik, N, Kandybei, S, Kanso, W, Karacson, M, Karbach, TM, Karodia, S, Kelsey, M, Kenyon, IR, Kenzie, M, Ketel, T, Khanji, B, Khurewathanakul, C, Klaver, S, Klimaszewski, K, Kochebina, O, Kolpin, M, Komarov, I, Koopman, RF, Koppenburg, P, Kozeiha, M, Kravchuk, L, Kreplin, K, Kreps, M, Krocker, G, Krokovny, P, Kruse, F, Krzemien, W, Kucewicz, W, Kucharczyk, M, Kudryavtsev, V, Kuonen, AK, Kurek, K, Kvaratskheliya, T, Lacarrere, D, Lafferty, G, Lai, A, Lambert, D, Lanfranchi, G, Langenbruch, C, Langhans, B, Latham, T, Lazzeroni, C, Gac, R Le, Leerdam, J van, Lees, J-P, Lefèvre, R, Leflat, A, Lefrançois, J, Cid, E Lemos, Leroy, O, Lesiak, T, Leverington, B, Li, Y, Likhomanenko, T, Liles, M, Lindner, R, Linn, C, Lionetto, F, Liu, B, Liu, X, Loh, D, Longstaff, I, Lopes, JH, Lucchesi, D, Martinez, M Lucio, Luo, H, Lupato, A, Luppi, E, Lupton, O, Lusardi, N, Machefert, F, Maciuc, F, Maev, O, Maguire, K, Malde, S, Malinin, A, Manca, G, Mancinelli, G, Manning, P, Mapelli, A, Maratas, J, Marchand, JF, Marconi, U, Benito, C Marin, Marino, P, Marks, J, Martellotti, G, Martin, M, Martinelli, M, Santos, D Martinez, Vidal, F Martinez, Tostes, D Martins, Massafferri, A, Matev, R, Mathad, A, Mathe, Z, Matteuzzi, C, Matthieu, K, Mauri, A, Maurin, B, Mazurov, A, McCann, M, McCarthy, J, McNab, A, McNulty, R, Meadows, B, Meier, F, Meissner, M, Melnychuk, D, Merk, M, Milanes, DA, Minard, M-N, Mitzel, DS, Rodriguez, J Molina, Monroy, IA, Monteil, S, Morandin, M, Morawski, P, Mordà, A, Morello, MJ, Moron, J, Morris, AB, Mountain, R, Muheim, F, Müller, J, Müller, K, Müller, V, Mussini, M, Muster, B, Naik, P, Nakada, T, Nandakumar, R, Nandi, A, Nasteva, I, Needham, M, Neri, N, Neubert, S, Neufeld, N, Neuner, M, Nguyen, AD, Nguyen, TD, Nguyen-Mau, C, Niess, V, Niet, R, Nikitin, N, Nikodem, T, Ninci, D, Novoselov, A, O'Hanlon, DP, Oblakowska-Mucha, A, Obraztsov, V, Ogilvy, S, Okhrimenko, O, Oldeman, R, Onderwater, CJG, Rodrigues, B Osorio, Goicochea, JM Otalora, Otto, A, Owen, P, Oyanguren, A, Palano, A, Palombo, F, Palutan, M, Panman, J, Papanestis, A, Pappagallo, M, Pappalardo, LL, Pappenheimer, C, Parkes, C, Passaleva, G, Patel, GD, Patel, M, Patrignani, C, Pearce, A, Pellegrino, A, Penso, G, Altarelli, M Pepe, Perazzini, S, Perret, P, Pescatore, L, Petridis, K, Petrolini, A, Petruzzo, M, Olloqui, E Picatoste, Pietrzyk, B, Pilař, T, Pinci, D, Pistone, A, Piucci, A, Playfer, S, Casasus, M Plo, Poikela, T, Polci, F, Poluektov, A, Polyakov, I, Polycarpo, E, Popov, A, Popov, D, Popovici, B, Potterat, C, Price, E, Price, JD, Prisciandaro, J, Pritchard, A, Prouve, C, Pugatch, V, Navarro, A Puig, Punzi, G, Qian, W, Quagliani, R, Rachwal, B, Rademacker, JH, Rama, M, Rangel, MS, Raniuk, I, Rauschmayr, N, Raven, G, Redi, F, Reichert, S, Reid, MM, Reis, AC dos, Ricciardi, S, Richards, S, Rihl, M, Rinnert, K, Molina, V Rives, Robbe, P, Rodrigues, AB, Rodrigues, E, Lopez, JA Rodriguez, Perez, P Rodriguez, Roiser, S, Romanovsky, V, Vidal, A Romero, Ronayne, JW, Rotondo, M, Rouvinet, J, Ruf, T, Valls, P Ruiz, Silva, JJ Saborido, Sagidova, N, Sail, P, Saitta, B, Guimaraes, V Salustino, Mayordomo, C Sanchez, Sedes, B Sanmartin, Santacesaria, R, Rios, C Santamarina, Santimaria, M, Santovetti, E, Sarti, A, Satriano, C, Satta, A, Saunders, DM, Savrina, D, Schiller, M, Schindler, H, Schlupp, M, Schmelling, M, Schmelzer, T, Schmidt, B, Schneider, O, Schopper, A, Schubiger, M, Schune, M-H, Schwemmer, R, Sciascia, B, Sciubba, A, Semennikov, A, Serra, N, Serrano, J, Sestini, L, Seyfert, P, Shapkin, M, Shapoval, I, Shcheglov, Y, Shears, T, Shekhtman, L, Shevchenko, V, Shires, A, Siddi, BG, Coutinho, R Silva, Simi, G, Sirendi, M, Skidmore, N, Skillicorn, I, Skwarnicki, T, Smith, E, Smith, IT, Smith, J, Smith, M, Snoek, H, Sokoloff, MD, Soler, FJP, Soomro, F, Souza, D, Paula, B Souza De, Spaan, B, Spradlin, P, Sridharan, S, Stagni, F, Stahl, M, Stahl, S, Stefkova, S, Steinkamp, O, Stenyakin, O, Stevenson, S, Stoica, S, Stone, S, Storaci, B, Stracka, S, Straticiuc, M, Straumann, U, Sun, L, Sutcliffe, W, Swientek, K, Swientek, S, Syropoulos, V, Szczekowski, M, Szczypka, P, Szumlak, T, T'Jampens, S, Tayduganov, A, Tekampe, T, Teklishyn, M, Tellarini, G, Teubert, F, Thomas, C, Thomas, E, Tilburg, J van, Tisserand, V, Tobin, M, Todd, J, Tolk, S, Tomassetti, L, Tonelli, D, Topp-Joergensen, S, Torr, N, Tournefier, E, Tourneur, S, Trabelsi, K, Tran, MT, Tresch, M, Trisovic, A, Tsaregorodtsev, A, Tsopelas, P, Tuning, N, Ukleja, A, Ustyuzhanin, A, Uwer, U, Vacca, C, Vagnoni, V, Valenti, G, Vallier, A, Gomez, R Vazquez, Regueiro, P Vazquez, Sierra, C Vázquez, Vecchi, S, Velthuis, JJ, Veltri, M, Veneziano, G, Vesterinen, M, Viaud, B, Vieira, D, Diaz, M Vieites, Vilasis-Cardona, X, Vollhardt, A, Volyanskyy, D, Voong, D, Vorobyev, A, Vorobyev, V, Voß, C, Vries, JA de, Waldi, R, Wallace, C, Wallace, R, Walsh, J, Wandernoth, S, Wang, J, Ward, DR, Watson, NK, Websdale, D, Weiden, A, Whitehead, M, Wilkinson, G, Wilkinson, M, Williams, M, Williams, MP, Williams, T, Wilson, FF, Wimberley, J, Wishahi, J, Wislicki, W, Witek, M, Wormser, G, Wotton, SA, Wright, S, Wyllie, K, Xie, Y, Xu, Z, Yang, Z, Yu, J, Yuan, X, Yushchenko, O, Zangoli, M, Zavertyaev, M, Zhang, L, Zhang, Y, Zhelezov, A, Zhokhov, A, Zhong, L, and Zucchelli, S
Subjects: High Energy Physics::Lattice, High Energy Physics::Phenomenology, High Energy Physics::Experiment
Abstract: The $B_s^0 \rightarrow J/\psi \phi \phi$ decay is observed in $pp$ collision data corresponding to an integrated luminosity of 3 fb$^{-1}$ recorded by the LHCb detector at centre-of-mass energies of 7 TeV and 8 TeV. This is the first observation of this decay channel, with a statistical significance of 15 standard deviations. The mass of the $B_s^0$ meson is measured to be $5367.08\,\pm \,0.38\,\pm\, 0.15$ MeV/c$^2$. The branching fraction ratio $\mathcal{B}(B_s^0 \rightarrow J/\psi \phi \phi)/\mathcal{B}(B_s^0 \rightarrow J/\psi \phi)$ is measured to be $0.0115\,\pm\, 0.0012\, ^{+0.0005}_{-0.0009}$. In both cases, the first uncertainty is statistical and the second is systematic. No evidence for non-resonant $B_s^0 \rightarrow J/\psi \phi K^+ K^-$ or $B_s^0 \rightarrow J/\psi K^+ K^- K^+ K^-$ decays is found.
Published: 2016

16. Measurement of the forward $Z$ boson production cross-section in $pp$ collisions at $\sqrt{s}$ = 7 TeV

Author: collaboration, LHCb, Aaij, R, Adeva, B, Adinolfi, M, Affolder, A, Ajaltouni, Z, Akar, S, Albrecht, J, Alessio, F, Alexander, M, Ali, S, Alkhazov, G, Cartelle, P Alvarez, Jr, AA Alves, Amato, S, Amerio, S, Amhis, Y, An, L, Anderlini, L, Anderson, J, Andreotti, M, Andrews, JE, Appleby, RB, Gutierrez, O Aquines, Archilli, F, d'Argent, P, Artamonov, A, Artuso, M, Aslanides, E, Auriemma, G, Baalouch, M, Bachmann, S, Back, JJ, Badalov, A, Baesso, C, Baldini, W, Barlow, RJ, Barschel, C, Barsuk, S, Barter, W, Batozskaya, V, Battista, V, Bay, A, Beaucourt, L, Beddow, J, Bedeschi, F, Bediaga, I, Bel, LJ, Belyaev, I, Ben-Haim, E, Bencivenni, G, Benson, S, Benton, J, Berezhnoy, A, Bernet, R, Bertolin, A, Bettler, M-O, Beuzekom, M van, Bien, A, Bifani, S, Bird, T, Birnkraut, A, Bizzeti, A, Blake, T, Blanc, F, Blouw, J, Blusk, S, Bocci, V, Bondar, A, Bondar, N, Bonivento, W, Borghi, S, Borgia, A, Borsato, M, Bowcock, TJV, Bowen, E, Bozzi, C, Brett, D, Britsch, M, Britton, T, Brodzicka, J, Brook, NH, Bursche, A, Buytaert, J, Cadeddu, S, Calabrese, R, Calvi, M, Gomez, M Calvo, Campana, P, Perez, D Campora, Capriotti, L, Carbone, A, Carboni, G, Cardinale, R, Cardini, A, Carniti, P, Carson, L, Akiba, K Carvalho, Mohr, R Casanova, Casse, G, Cassina, L, Garcia, L Castillo, Cattaneo, M, Cauet, Ch, Cavallero, G, Cenci, R, Charles, M, Charpentier, Ph, Chefdeville, M, Chen, S, Cheung, S-F, Chiapolini, N, Chrzaszcz, M, Vidal, X Cid, Ciezarek, G, Clarke, PEL, Clemencic, M, Cliff, HV, Closier, J, Coco, V, Cogan, J, Cogneras, E, Cogoni, V, Cojocariu, L, Collazuol, G, Collins, P, Comerma-Montells, A, Contu, A, Cook, A, Coombes, M, Coquereau, S, Corti, G, Corvo, M, Counts, I, Couturier, B, Cowan, GA, Craik, DC, Crocombe, A, Torres, M Cruz, Cunliffe, S, Currie, R, D'Ambrosio, C, Dalseno, J, David, PNY, Davis, A, Bruyn, K De, Capua, S De, Cian, M De, Miranda, JM De, Paula, L De, Silva, W De, Simone, P De, Dean, C-T, Decamp, D, Deckenhoff, M, Buono, L Del, Déléage, N, Derkach, D, Deschamps, O, Dettori, F, Dey, B, Canto, A Di, Ruscio, F Di, Dijkstra, H, Donleavy, S, Dordei, F, Dorigo, M, Suárez, A Dosil, Dossett, D, Dovbnya, A, Dreimanis, K, Dujany, G, Dupertuis, F, Durante, P, Dzhelyadin, R, Dziurda, A, Dzyuba, A, Easo, S, Egede, U, Egorychev, V, Eidelman, S, Eisenhardt, S, Eitschberger, U, Ekelhof, R, Eklund, L, Rifai, I El, Elsasser, Ch, Ely, S, Esen, S, Evans, HM, Evans, T, Falabella, A, Färber, C, Farinelli, C, Farley, N, Farry, S, Fay, R, Ferguson, D, Albor, V Fernandez, Ferrari, F, Rodrigues, F Ferreira, Ferro-Luzzi, M, Filippov, S, Fiore, M, Fiorini, M, Firlej, M, Fitzpatrick, C, Fiutowski, T, Fol, P, Fontana, M, Fontanelli, F, Forty, R, Francisco, O, Frank, M, Frei, C, Frosini, M, Fu, J, Furfaro, E, Torreira, A Gallas, Galli, D, Gallorini, S, Gambetta, S, Gandelman, M, Gandini, P, Gao, Y, Pardiñas, J García, Garofoli, J, Tico, J Garra, Garrido, L, Gascon, D, Gaspar, C, Gastaldi, U, Gauld, R, Gavardi, L, Gazzoni, G, Geraci, A, Gerick, D, Gersabeck, E, 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DM, Savrina, D, Schiller, M, Schindler, H, Schlupp, M, Schmelling, M, Schmelzer, T, Schmidt, B, Schneider, O, Schopper, A, Schune, M-H, Schwemmer, R, Sciascia, B, Sciubba, A, Semennikov, A, Sepp, I, Serra, N, Serrano, J, Sestini, L, Seyfert, P, Shapkin, M, Shapoval, I, Shcheglov, Y, Shears, T, Shekhtman, L, Shevchenko, V, Shires, A, Coutinho, R Silva, Simi, G, Sirendi, M, Skidmore, N, Skillicorn, I, Skwarnicki, T, Smith, E, Smith, J, Smith, M, Snoek, H, Sokoloff, MD, Soler, FJP, Soomro, F, Souza, D, Paula, B Souza De, Spaan, B, Spradlin, P, Sridharan, S, Stagni, F, Stahl, M, Stahl, S, Steinkamp, O, Stenyakin, O, Sterpka, F, Stevenson, S, Stoica, S, Stone, S, Storaci, B, Stracka, S, Straticiuc, M, Straumann, U, Stroili, R, Sun, L, Sutcliffe, W, Swientek, K, Swientek, S, Syropoulos, V, Szczekowski, M, Szczypka, P, Szumlak, T, T'Jampens, S, Tekampe, T, Teklishyn, M, Tellarini, G, Teubert, F, Thomas, C, Thomas, E, Tilburg, J van, Tisserand, V, Tobin, M, Todd, J, Tolk, S, Tomassetti, L, Tonelli, D, Topp-Joergensen, S, Torr, N, Tournefier, E, Tourneur, S, Trabelsi, K, Tran, MT, Tresch, M, Trisovic, A, Tsaregorodtsev, A, Tsopelas, P, Tuning, N, Garcia, M Ubeda, Ukleja, A, Ustyuzhanin, A, Uwer, U, Vacca, C, Vagnoni, V, Valenti, G, Vallier, A, Gomez, R Vazquez, Regueiro, P Vazquez, Sierra, C Vázquez, Vecchi, S, Velthuis, JJ, Veltri, M, Veneziano, G, Vesterinen, M, Viaud, B, Vieira, D, Diaz, M Vieites, Vilasis-Cardona, X, Vollhardt, A, Volyanskyy, D, Voong, D, Vorobyev, A, Vorobyev, V, Voß, C, Vries, JA de, Waldi, R, Wallace, C, Wallace, R, Walsh, J, Wandernoth, S, Wang, J, Ward, DR, Watson, NK, Websdale, D, Weiden, A, Whitehead, M, Wiedner, D, Wilkinson, G, Wilkinson, M, Williams, M, Williams, MP, Wilson, FF, Wimberley, J, Wishahi, J, Wislicki, W, Witek, M, Wormser, G, Wotton, SA, Wright, S, Wyllie, K, Xie, Y, Xu, Z, Yang, Z, Yuan, X, Yushchenko, O, Zangoli, M, Zavertyaev, M, Zhang, L, Zhang, Y, Zhelezov, A, Zhokhov, A, Zhong, L, Laboratoire de Physique Corpusculaire - Clermont-Ferrand (LPC), Université Blaise Pascal - Clermont-Ferrand 2 (UBP)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-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 de l'Accélérateur Linéaire (LAL), Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-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, and Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Sud - Paris 11 (UP11)
Subjects: High Energy Physics - Experiment (hep-ex), High Energy Physics::Phenomenology, [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], FOS: Physical sciences, High Energy Physics::Experiment, Nuclear Experiment, Particle Physics - Experiment, High Energy Physics - Experiment
Abstract: A measurement of the production cross-section for $Z$ bosons that decay to muons is presented. The data were recorded by the LHCb detector during $pp$ collisions at a centre-of-mass energy of 7 TeV, and correspond to an integrated luminosity of 1.0 fb$^{-1}$. The cross-section is measured for muons in the pseudorapidity range $2.0 < \eta < 4.5$ with transverse momenta $p_{T} > 20$ GeV/c. The dimuon mass is restricted to $60 < M_{\mu^{+}\mu^{-}} < 120$ GeV/c$^{2}$. The measured cross-section is $$\sigma_{Z\rightarrow\mu^{+}\mu^{-}} = (76.0 \pm 0.3 \pm 0.5 \pm 1.0 \pm 1.3) \, \text{pb}$$ where the uncertainties are due to the sample size, systematic effects, the beam energy and the luminosity. This result is in good agreement with theoretical predictions at next-to-next-to-leading order in perturbative quantum chromodynamics. The cross-section is also measured differentially as a function of kinematic variables of the $Z$ boson. Ratios of the production cross-sections of electroweak bosons are presented using updated LHCb measurements of $W$ boson production. A precise test of the Standard Model is provided by the measurement of the ratio $$\frac{\sigma_{W^{+}\rightarrow\mu^{+}\nu_{\mu}} + \sigma_{W^{-}\rightarrow\mu^{-}\bar{\nu}_{\mu}}}{\sigma_{Z\rightarrow\mu^{+}\mu^{-}}} = 20.63\pm0.09\pm0.12\pm0.05,$$ where the uncertainty due to luminosity cancels., Comment: New version in line with version accepted by JHEP. Small changes to the layout of figures. Results unchanged
Published: 2015

17. Search for time-dependent $CP$ violation in $D^0 \to K^+ K^-$ and $D^0 \to π^+ π^-$ decays

Author: collaboration, LHCb, Aaij, R, Beteta, C Abellán, Ackernley, T, Adeva, B, Adinolfi, M, Afsharnia, H, Aidala, CA, Aiola, S, Ajaltouni, Z, Akar, S, Albrecht, J, Alessio, F, Alexander, M, Albero, A Alfonso, Aliouche, Z, Alkhazov, G, Cartelle, P Alvarez, Amato, S, Amhis, Y, An, L, Anderlini, L, Andreianov, A, Andreotti, M, Archilli, F, Artamonov, A, Artuso, M, Arzymatov, K, Aslanides, E, Atzeni, M, Audurier, B, Bachmann, S, Bachmayer, M, Back, JJ, Baker, S, Rodriguez, P Baladron, Balagura, V, Baldini, W, Leite, J Baptista, Barlow, RJ, Barsuk, S, Barter, W, Bartolini, M, Baryshnikov, F, Basels, JM, Bassi, G, Batsukh, B, Battig, A, Bay, A, Becker, M, Bedeschi, F, Bediaga, I, Beiter, A, Belavin, V, Belin, S, Bellee, V, Belous, K, Belov, I, Belyaev, I, Bencivenni, G, Ben-Haim, E, Berezhnoy, A, Bernet, R, Berninghoff, D, Bernstein, HC, Bertella, C, Bertolin, A, Betancourt, C, Betti, F, Bezshyiko, Ia, Bhasin, S, Bhom, J, Bian, L, Bieker, MS, Bifani, S, Billoir, P, Birch, M, Bishop, FCR, Bitadze, A, Bizzeti, A, Bjørn, M, Blago, MP, Blake, T, Blanc, F, Blusk, S, Bobulska, D, Boelhauve, JA, Garcia, O Boente, Boettcher, T, Boldyrev, A, Bondar, A, Bondar, N, Borghi, S, Borisyak, M, Borsato, M, Borsuk, JT, Bouchiba, SA, Bowcock, TJV, Boyer, A, Bozzi, C, Bradley, MJ, Braun, S, Rodriguez, A Brea, Brodski, M, Brodzicka, J, Gonzalo, A Brossa, Brundu, D, Buonaura, A, Burr, C, Bursche, A, Butkevich, A, Butter, JS, Buytaert, J, Byczynski, W, Cadeddu, S, Cai, H, Calabrese, R, Calefice, L, Diaz, L Calero, Cali, S, Calladine, R, Calvi, M, Gomez, M Calvo, Magalhaes, P Camargo, Camboni, A, Campana, P, Quezada, AF Campoverde, Capelli, S, Capriotti, L, Carbone, A, Carboni, G, Cardinale, R, Cardini, A, Carli, I, Carniti, P, Carus, L, Akiba, K Carvalho, Vidal, A Casais, Casse, G, Cattaneo, M, Cavallero, G, Celani, S, Cerasoli, J, Chadwick, AJ, Chapman, MG, Charles, M, Charpentier, Ph, Chatzikonstantinidis, G, Barajas, CA Chavez, Chefdeville, M, Chen, C, Chen, S, Chernov, A, Chobanova, V, 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Zonneveld, JB, Zucchelli, S, Zuliani, D, and Zunica, G
Subjects: High Energy Physics::Experiment
Abstract: A search for time-dependent violation of the charge-parity symmetry in $D^0 \to K^+ K^-$ and $D^0 \to \pi^+ \pi^-$ decays is performed at the LHCb experiment using proton-proton collision data recorded from 2015 to 2018 at a centre-of-mass energy of 13 TeV, corresponding to an integrated luminosity of 6 fb$^{-1}$. The $D^0$ meson is required to originate from a $D^*(2010)^+ \to D^0 \pi^+$ decay, such that its flavour at production is identified by the charge of the accompanying pion. The slope of the time-dependent asymmetry of the decay rates of $D^0$ and $\bar{D}^0$ mesons into the final states under consideration is measured to be $\Delta Y_{K^+ K^-} = (-2.3 \pm 1.5 \pm 0.3) \times 10^{-4}$, $\Delta Y_{\pi^+ \pi^-} = (-4.0 \pm 2.8 \pm 0.4)\times 10^{-4}$, where the first uncertainties are statistical and the second are systematic. These results are compatible with the conservation of the charge-parity symmetry at the level of 2 standard deviations and improve the precision by nearly a factor of two.

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17 results on '"Vries, JA De"'

1. Observation of the suppressed $Λ_b^0\to D p K^-$ decay with $D\to K^+ π^-$ and measurement of its $C\!P$ asymmetry

2. Measurement of prompt charged-particle production in pp collisions at a centre-of-mass energy of 13 TeV

3. Search for the doubly charmed baryon $\itΩ_{cc}^{+}$

4. Measurement of the CKM angle $γ$ in $B^\pm\to D K^\pm$ and $B^\pm \to D π^\pm$ decays with $D \to K_\mathrm S^0 h^+ h^-$

5. Measurement of the $Λ^0_b\rightarrow J/ψΛ$ angular distribution and the $Λ^0_b$ polarisation in $pp$ collisions

6. Study of the $ψ_2(3823)$ and $χ_{c1}(3872)$ states in $B^+ \rightarrow \left( Jψπ^+π^-\right)K^+$ decays

7. Search for the rare decay $B^{+} \rightarrow μ^{+}μ^{-}μ^{+}ν_{μ}$

8. Measurement of the $CP$-violating phase $φ_s$ from $B_{s}^{0}\to J/ψπ^+π^-$ decays in 13 TeV $pp$ collisions

9. Amplitude analysis of $B^{0}_{s} \rightarrow K^{0}_{\textrm{S}} K^{\pm}π^{\mp}$ decays

10. Test of Lepton Flavor Universality by the measurement of the $B^0 \to D^{*-} τ^+ ν_τ$ branching fraction using three-prong $τ$ decays

11. Test of lepton flavor universality by the measurement of the B0→D*−τ+ντ branching fraction using three-prong τ decays

12. First measurement of the $CP$-violating phase $φ_s^{d\overline{d}}$ in $B_s^0\to(K^+π^-)(K^-π^+)$ decays

13. Updated branching fraction measurements of $B^0_{(s)} \to K_{\mathrm{\scriptscriptstyle S}}^0 h^+ h^{\prime -}$ decays

14. Measurement of the $B_{s}^{0} \rightarrow D_{s}^{()+}D_{s}^{()-}$ branching fractions

15. Observation of the $B_s^0 \rightarrow J/ψφφ$ decay

16. Measurement of the forward $Z$ boson production cross-section in $pp$ collisions at $\sqrt{s}$ = 7 TeV

17. Search for time-dependent $CP$ violation in $D^0 \to K^+ K^-$ and $D^0 \to π^+ π^-$ decays

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