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Aaij, R, Beteta, C Abellan, Adeva, B, Adinol, M, Aidala, CA, Ajaltouni, Z, Akar, S, Albicocco, P, Albrecht, J, Alessio, F et al (show 860 more authors) , Alexander, M, Alfonso Albero, A, Alkhazov, G, Cartelle, P Alvarez, Alves Jr, AA, 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, 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, Belavin, V, Belin, S, Beliy, N, Bellee, V, 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, Bjorn, M, Blago, MP, Blake, T, Blanc, F, Blusk, S, Bobulska, D, Bocci, V, Boente Garcia, O, Boettcher, T, Boldyrev, A, Bondar, A, Bondar, N, Borghi, S, Borisyak, M, Borsato, M, Boubdir, M, Bowcock, TJV 
ORCID: 0000-0002-3505-6915, Bozzi, C, Braun, S, Brea Rodriguez, A, Brodski, M, Brodzicka, J, Gonzalo, A Brossa, Brundu, D, Buchanan, E, Buonaura, A, Burr, C, Bursche, A, Butter, JS, Buytaert, J, Byczynski, W, Cadeddu, S, Cai, H, Calabrese, R, Cali, S, Calladine, R, Calvi, M, Calvo Gomez, M, Camboni, A, Campana, P, Perez, DH Campora, Capriotti, L, Carbone, A, Carboni, G, Cardinale, R, Cardini, A, Carniti, P, Carvalho Akiba, K, Casais Vidal, A, Casse, G ORCID: 0000-0002-8516-237X, Cattaneo, M, Cavallero, G, Cenci, R, 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, Cid Vidal, X, 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, Comerma-Montells, A, Contu, A, Coombs, G, Coquereau, S, Corti, G, Sobral, CM Costa, Couturier, B, Cowan, GA, Craik, DC, Crocombe, A, Cruz Torres, M, Currie, R, Silva, CL, DallOcco, E, Dalseno, J, D'Ambrosio, C, Danilina, A, d'Argent, P, Davis, A, Francisco, O De Aguiar, De Bruyn, K, De Capua, S, De Cian, M, De Miranda, JM, De Paula, L, De Serio, M, De Simone, P, de Vries, JA, Dean, CT, Dean, W, Decamp, D, Del Buono, L, Delaney, B, Dembinski, H-P, Demmer, M, Dendek, A, Derkach, D, Deschamps, O, Desse, F, Dettori, F, Dey, B, Di Canto, A, Di Nezza, P, Didenko, S, Dijkstra, H, Dordei, F, Dorigo, M, dos Reis, AC, Suarez, 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, Ek-In, S, Eklund, L, Ely, S, Ene, A, Escher, S, Esen, S, Evans, T, Falabella, A, Farber, C, Farley, N, Farry, S ORCID: 0000-0001-5119-9740, Fazzini, D, Feo, MF, Declara, P Fernandez, Fernandez Prieto, A, Ferrari, F, Lopes, L Ferreira, Ferreira Rodrigues, F, Sole, S Ferreres, 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 ORCID: 0000-0002-3761-209X, Sevilla, M Franco, Frank, M, Frei, C, Fu, J, Funk, W, Gabriel, E, Gallas Torreira, A, Galli, D, Gallorini, S, Gambetta, S, Gan, Y, Gandelman, M, Gandini, P, Gao, Y, Garcia Martin, LM, Pardinas, J Garcia, Garcia Plana, B, Tico, J Garra, Garrido, L, Gascon, D, Gaspar, C, Gazzoni, G, Gerick, D, Gersabeck, E, Gersabeck, M, Gershon, T, Gerstel, D, Ghez, Ph, Gibson, V, Giovent, AU, Girard, OG, Gironella Gironell, P, Giubega, L, Gizdov, K, Gligorov, VV, Gobel, C, Golubkov, D, Golutvin, A, Gomes, A, Gorelov, IV, Gotti, C, Govorkova, E, Grabowski, JP, Graciani Diaz, R, Cardoso, LA Granado, Grauges, E, Graverini, E, Graziani, G, Grecu, A, Greim, R, Griffith, P, Grillo, L, Gruber, L, Cazon, BR Gruberg, Gu, C, Gushchin, E, Guth, A, Guz, Yu, Gys, T, Hadavizadeh, T, Hadjivasiliou, C, Haefeli, G, Haen, C, Haines, SC, Hamilton, PM, Han, Q, Han, X, Hancock, TH, Hansmann-Menzemer, S, Harnew, N, Harrison, T, Hasse, C, Hatch, M, He, J, Hecker, M, Heijho, K, Heinicke, K, Heister, A, Hennessy, K ORCID: 0000-0002-1529-8087, 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 ORCID: 0000-0002-4174-6509, Hynds, D, Ibis, P, Idzik, M, Ilten, P, Inglessi, A, Inyakin, A, Ivshin, K, Jacobsson, R, Jakobsen, S, 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, Khanji, B, Kharisova, A, Khurewathanakul, C, Kim, KE, Kirn, T, Kirsebom, VS, Klaver, S, Klimaszewski, K, Koliiev, S, Kolpin, M, Kondybayeva, A, Konoplyannikov, A, Kopciewicz, P, Kopecna, R, Koppenburg, P, Kostiuk, I, Kot, O, Kotriakhova, S, Kozeiha, M, Kravchuk, L, Kreps, M, Kress, F, Kretzschmar, S, Krokovny, P, Krupa, W, Krzemien, W, Kucewicz, W, Kucharczyk, M, Kudryavtsev, V, Kunde, GJ, Kuonen, AK, Kvaratskheliya, T, Lacarrere, D, Lacarrerty, G, Lai, A, Lancierini, D, Lanfranchi, G, Langenbruch, C, Latham, T, Lazzeroni, C, Le Gac, R, Lefevre, R, Leflat, A, Lemaitre, F, Leroy, O, Lesiak, T, Leverington, B, Li, H, Li, P-R, Li, X, Li, Y, Li, Z, Liang, X, Likhomanenko, T, Lindner, R, Lionetto, F, Lisovskyi, V, Liu, G, Liu, X, Loh, D, Loi, A, Castro, J Lomba, Longstaff, I, Lopes, JH, Loustau, G, Lovell, GH, Lucchesi, D, Lucio Martinez, M, 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, Maevskiy, A, 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, 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Ogilvy, S, O'Hanlon, DP, Oldeman, R, Onderwater, CJG, Osborn, JD, Ossowska, A, Otalora Goicochea, JM, 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, Prasanth, K, 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, Ramos Pernas, M, Rangel, MS, Ratnikov, F, Raven, G, Salzgeber, M Ravonel, Reboud, M, Redi, F, Reichert, S, Reiss, F, Remon Alepuz, C, Ren, Z, Renaudin, V, Ricciardi, S, Richards, S, Rinnert, K, Robbe, P, Robert, A, Rodrigues, AB, Rodrigues, E, Rodriguez Lopez, JA, Roehrken, M, Roiser, S, Rollings, A, Romanovskiy, V, Romero Vidal, A, Roth, JD, Rotondo, M, Rudolph, MS, Ruf, T, Ruiz Vidal, J, Saborido Silva, JJ, Sagidova, N, Saitta, B, Salustino Guimaraes, V, Gras, C Sanchez, Sanchez Mayordomo, C, Sanmartin Sedes, B, Santacesaria, R, Santamarina Rios, C, 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 ORCID: 0000-0002-2653-1366, Shekhtman, L, Shevchenko, V, Shmanin, E, Siddi, BG, Coutinho, R Silva, Silva de Oliveira, L, Simi, G, Simone, S, Skiba, I, Skidmore, N, Skwarnicki, T, Slater, MW, Smeaton, JG, Smith, E, Smith, IT, Smith, M, Soares, M, Soares Lavra, I, Sokoloff, MD, Soler, FJP, Souza De Paula, B, 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, 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, van Beuzekom, M, Van Hecke, H, van Herwijnen, E, Van 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Zonneveld, JB and Zucchelli, S
(2019)
Measurement of CP violation in the <i>B<sub>s</sub></i><SUP>0</SUP>→ φφ decay and search for the <i>B</i><SUP>0</SUP><i>→</i> φφ decay.
JOURNAL OF HIGH ENERGY PHYSICS, 2019 (12).
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Open Access link.
Abstract
<jats:title>A<jats:sc>bstract</jats:sc>
</jats:title>
<jats:p>A measurement of the time-dependent CP-violating asymmetry in <jats:inline-formula>
<jats:alternatives>
<jats:tex-math>$$ {B}_s^0\to \phi \phi $$</jats:tex-math>
<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML">
<mml:msubsup>
<mml:mi>B</mml:mi>
<mml:mi>s</mml:mi>
<mml:mn>0</mml:mn>
</mml:msubsup>
<mml:mo>→</mml:mo>
<mml:mi>ϕϕ</mml:mi>
</mml:math>
</jats:alternatives>
</jats:inline-formula> decays is presented. Using a sample of proton-proton collision data corresponding to an integrated luminosity of 5<jats:italic>.</jats:italic>0 fb<jats:sup>
<jats:italic>−</jats:italic>1</jats:sup> collected by the LHCb experiment at centre-of-mass energies <jats:inline-formula>
<jats:alternatives>
<jats:tex-math>$$ \sqrt{s} $$</jats:tex-math>
<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML">
<mml:msqrt>
<mml:mi>s</mml:mi>
</mml:msqrt>
</mml:math>
</jats:alternatives>
</jats:inline-formula> = 7 TeV in 2011, 8 TeV in 2012 and 13 TeV in 2015 and 2016, a signal yield of around 9000 <jats:inline-formula>
<jats:alternatives>
<jats:tex-math>$$ {B}_s^0\to \phi \phi $$</jats:tex-math>
<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML">
<mml:msubsup>
<mml:mi>B</mml:mi>
<mml:mi>s</mml:mi>
<mml:mn>0</mml:mn>
</mml:msubsup>
<mml:mo>→</mml:mo>
<mml:mi>ϕϕ</mml:mi>
</mml:math>
</jats:alternatives>
</jats:inline-formula> decays is obtained. The CP-violating phase <jats:inline-formula>
<jats:alternatives>
<jats:tex-math>$$ {\phi}_s^{s\overline{s}s} $$</jats:tex-math>
<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML">
<mml:msubsup>
<mml:mi>ϕ</mml:mi>
<mml:mi>s</mml:mi>
<mml:mrow>
<mml:mi>s</mml:mi>
<mml:mover>
<mml:mi>s</mml:mi>
<mml:mo>¯</mml:mo>
</mml:mover>
<mml:mi>s</mml:mi>
</mml:mrow>
</mml:msubsup>
</mml:math>
</jats:alternatives>
</jats:inline-formula> is measured to be <jats:italic>−</jats:italic>0<jats:italic>.</jats:italic>073 ± 0<jats:italic>.</jats:italic>115(stat) ± 0<jats:italic>.</jats:italic>027(syst) rad, under the assumption it is independent of the helicity of the <jats:italic>ϕϕ</jats:italic> decay. In addition, the CP-violating phases of the transverse polarisations under the assumption of CP conservation of the longitudinal phase are measured. The helicity-independent direct CP-violation parameter is also measured, and is found to be |λ| = 0<jats:italic>.</jats:italic>99 ± 0<jats:italic>.</jats:italic>05(stat) ± 0<jats:italic>.</jats:italic>01(syst). In addition, <jats:italic>T</jats:italic>-odd triple-product asymmetries are measured. The results obtained are consistent with the hypothesis of CP conservation in <jats:inline-formula>
<jats:alternatives>
<jats:tex-math>$$ \overline{b}\to \overline{s}s\overline{s}s $$</jats:tex-math>
<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML">
<mml:mover>
<mml:mi>b</mml:mi>
<mml:mo>¯</mml:mo>
</mml:mover>
<mml:mo>→</mml:mo>
<mml:mover>
<mml:mi>s</mml:mi>
<mml:mo>¯</mml:mo>
</mml:mover>
<mml:mi>s</mml:mi>
<mml:mover>
<mml:mi>s</mml:mi>
<mml:mo>¯</mml:mo>
</mml:mover>
<mml:mi>s</mml:mi>
</mml:math>
</jats:alternatives>
</jats:inline-formula> transitions. Finally, a limit on the branching fraction of the <jats:italic>B</jats:italic>
<jats:sup>0</jats:sup> → <jats:italic>ϕϕ</jats:italic> decay is determined to be <jats:inline-formula>
<jats:alternatives>
<jats:tex-math>$$ \mathcal{B}\left({B}^0\to \phi \phi \right)<2.7\times {10}^{-8} $$</jats:tex-math>
<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML">
<mml:mi>B</mml:mi>
<mml:mfenced>
<mml:mrow>
<mml:msup>
<mml:mi>B</mml:mi>
<mml:mn>0</mml:mn>
</mml:msup>
<mml:mo>→</mml:mo>
<mml:mi>ϕϕ</mml:mi>
</mml:mrow>
</mml:mfenced>
<mml:mo><</mml:mo>
<mml:mn>2.7</mml:mn>
<mml:mo>×</mml:mo>
<mml:msup>
<mml:mn>10</mml:mn>
<mml:mrow>
<mml:mo>−</mml:mo>
<mml:mn>8</mml:mn>
</mml:mrow>
</mml:msup>
</mml:math>
</jats:alternatives>
</jats:inline-formula> at 90 % confidence level.</jats:p>
Dimensions
Dimensions
