E-viri
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Adinolfi, Marco; Anderlini, Lucio; Baesso, Clarissa; Belyaev, Ivan; Berezhnoy, Alexander; Bertolin, Alessandro; Bordyuzhin, Igor; Calladine, Ryan; Calvi, Marta; Calvo Gomez, Miriam; Camboni, Alessandro; Cardini, Alessandro; Carvalho Akiba, Kazuyoshi; Cattaneo, Marco; Chapman, Matthew George; Chatzikonstantinidis, Georgios; Ciambrone, Paolo; Collins, Paula; Dalseno, Jeremy; De Bruyn, Kristof; De Cian, Michel; De Serio, Marilisa; Eisenhardt, Stephan; Ekelhof, Robert; Fazzini, Davide; Filippov, Sergey; Fitzpatrick, Conor; Franco Lima, Vinicius; Furfaro, Emiliano; Garsed, Philip John; Gavardi, Laura; Gersabeck, Marco; Gianì, Sebastiana; Gotti, Claudio; Graciani Diaz, Ricardo; Griffith, Peter; Hicheur, Adlène; Huard, Zachary; Hutchcroft, David; Kandybei, Sergii; Kosmyntseva, Alena; Kozeiha, Mohamad; Kruse, Florian; Kudryavtsev, Vasily; Lafferty, George; Li, Pei-Rong; Liu, Xuesong; Loh, David; Luppi, Eleonora; Machefert, Frederic; Maciuc, Florin; Marchand, Jean François; Massacrier, Laure Marie; Matteuzzi, Clara; Meadows, Brian; Merk, Marcel; Milanes, Diego Alejandro; Mogini, Andrea; Müller, Janine; Müller, Vanessa; Naik, Paras; Neri, Nicola; Oldeman, Rudolf; Pappagallo, Marco; Petridis, Konstantinos; Petrov, Aleksandr; Petruzzo, Marco; Pinci, Davide; Plo Casasus, Maximo; Pugatch, Valery; Qian, Wenbin; Quintana, Boris; Rodriguez Lopez, Jairo Alexis; Satta, Alessia; Saunders, Daniel Martin; Schael, Stefan; Schreiner, HF; Schwemmer, Rainer; Sergi, Antonino; Silva Coutinho, Rafael; Skidmore, Nicola; Smith, Iwan Thomas; Spradlin, Patrick; Stevens, Holger; Storaci, Barbara; Tellarini, Giulia; Teubert, Frederic; Trisovic, Ana; Tully, Alison; Uwer, Ulrich; Vecchi, Stefania; Van Veghel, Maarten; Velthuis, Jaap; Veneziano, Giovanni; Volkov, Vladimir; Wilkinson, Guy; Wishahi, Julian; Witek, Mariusz; Wotton, Stephen; Zucchelli, Stefano
2018Report
A search for B$^{+}$ → D$_{s}^{+}$ K$^{+}$K$^{−}$ decays is performed using pp collision data corresponding to an integrated luminosity of 4.8 fb$^{−1}$, collected at centre-of-mass energies of 7, 8 and 13 TeV with the LHCb experiment. A significant signal is observed for the first time and the branching fraction is determined to be $\mathcal{B}(B^+ \to D_{s}^+ K^+ K^-) = (7.1\pm 0.5\pm 0.6\pm 0.7) \times 10^{-6}$ where the first uncertainty is statistical, the second systematic and the third due to the uncertainty on the branching fraction of the normalisation mode $B^+ \to D^{+}_s \bar{D}^0$. A search is also performed for the pure annihilation decay $B^+ \to D_{s}^+ \phi$. No significant signal is observed and a limit of $\mathcal{B}(B^+ \to D_{s}^+ \phi) < 4.9 \times 10^{-7} (4.2 \times 10^{-7})$ is set on the branching fraction at 95% (90%) confidence level.
