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Amplitude analysis of B±→[pi]± K+K− decays

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The first amplitude analysis of the $B^\pm \to \pi^\pm K^+ K^-$ decay is reported based on a data sample corresponding to an integrated luminosity of 3.0 fb$^{-1}$ of $pp$ collisions recorded in 2011 and 2012 with the LHCb detector. The data is found to be best described by a coherent sum of five re...

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Autori principali: Aaij, Roel (Autore) , Bachmann, Sebastian (Autore) , Berninghoff, Daniel (Autore) , Borsato, Martino (Autore) , Braun, Svende (Autore) , Comerma-Montells, Albert (Autore) , D'Argent, Philippe (Autore) , Dziewiecki, Michal (Autore) , Gerick, David (Autore) , Grabowski, Jascha (Autore) , Han, Xiaoxue (Autore) , Hansmann-Menzemer, Stephanie (Autore) , Hu, Jiangqiao (Autore) , Kecke, Matthieu (Autore) , Klimkovich, Tatsiana (Autore) , Kolpin, Michael (Autore) , Kopecná, Renata (Autore) , Leverington, Blake (Autore) , Malygina, Hanna (Autore) , Marks, Jörg (Autore) , Mitzel, Dominik (Autore) , Neubert, Sebastian (Autore) , Piucci, Alessio (Autore) , Skidmore, Nicola (Autore) , Stahl, Marian (Autore) , Stemmle, Simon (Autore) , Waldi, Roland (Autore) , Zhelezov, Alexey (Autore)
Ente Autore: LHCb Collaboration (Autore)
Natura: Article (Journal)
Lingua:inglese
Pubblicazione: 6 December 2019
In: Physical review letters
Year: 2019, Volume: 123, Fascicolo: 23
ISSN:1079-7114
DOI:10.1103/PhysRevLett.123.231802
Accesso online:Verlag, lizenzpflichtig, Volltext: https://doi.org/10.1103/PhysRevLett.123.231802
Verlag, lizenzpflichtig, Volltext: http://arxiv.org/abs/1905.09244
Testo
Note sull'autore:LHCb Collaboration*
Descrizione
Riassunto:The first amplitude analysis of the $B^\pm \to \pi^\pm K^+ K^-$ decay is reported based on a data sample corresponding to an integrated luminosity of 3.0 fb$^{-1}$ of $pp$ collisions recorded in 2011 and 2012 with the LHCb detector. The data is found to be best described by a coherent sum of five resonant structures plus a nonresonant component and a contribution from $\pi\pi \leftrightarrow KK$ $S$-wave rescattering. The dominant contributions in the $\pi^\pm K^\mp$ and $K^{+}K^{-}$ systems are the nonresonant and the $B^\pm \to \rho(1450)^{0}\pi^{\pm}$ amplitudes, respectively, with fit fractions around $30\%$. For the rescattering contribution, a sizeable fit fraction is observed. This component has the largest $CP$ asymmetry reported to date for a single amplitude of $(-66 \pm 4 \pm 2)\%$, where the first uncertainty is statistical and the second systematic. No significant $CP$ violation is observed in the other contributions.
Descrizione del documento:Gesehen am 19.03.2020
Im Titel sind "±", "plus" und "minus" hochgestellt
*LHCb Collaboration: R. Aaij [und 844 weitere Personen]
Descrizione fisica:Online Resource
ISSN:1079-7114
DOI:10.1103/PhysRevLett.123.231802

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