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Hamer, P; Frey, A; Abdesselam, A; Adachi, I; Aihara, H; Said, S Al; Arinstein, K; Asner, D M; Aushev, T
Physical review. D, 02/2016, Letnik: 93, Številka: 3Journal Article
We search for the process B super(0) arrow right pi super(-)tau super(+)nu sub(tau) using the full Belle data set of 711fb super(-1), corresponding to 772x10 super(6)BB pairs, collected at the Gamma(4S) resonance with the Belle detector at the KEKB asymmetric-energy e super(+)e super(-) collider. We reconstruct one B meson in a hadronic decay and search for the B super(0) arrow right pi super(-)tau super(+)nu sub(tau) process in the remainder of the event. No significant signal is observed and an upper limit of Bernoulli(B super(0) arrow right pi super(-)tau super(+) nu super(tau))<2.5x10 super(-4) is obtained at the 90% confidence level.
