Institute: MPI für Physik     Collection: YB 2016     Display Documents

ID: 716470.0, MPI für Physik / YB 2016
Evidence for the decay B0->eta pi^0
Authors:
Date of Publication (YYYY-MM-DD):2015
Title of Journal:Physical Review D
Journal Abbrev.:Phys.Rev.D
Issue / Number:92
Start Page:011101
Audience:Not Specified
Intended Educational Use:No
Abstract / Description:We report a search for the charmless hadronic decay $B^0\\to\\eta \\pi^0$ with a data sample corresponding to an integrated luminosity of 694 $\\rm fb^{-1}$ containing $753\\times10^6$ $B\\bar{B}$ pairs. The data were collected by the Belle experiment running on the $\\Upsilon(4S)$ resonance at the KEKB $e^+e^-$ collider. We measure a branching fraction $\\mathcal{B}(B^0\\to\\eta\\pi^0)=(4.1^{+1.7+0.5}_{-1.5-0.7})\\times 10^{-7}$, where the first uncertainty is statistical and the second is systematic. Our measurement gives an upper limit of $\\mathcal{B}(B^0\\to\\eta\\pi^0)<6.5\\times 10^{-7}$ at 90\\% confidence level. The signal has a significance of $3.0$ standard deviations and constitutes the first evidence for this decay mode.
Classification / Thesaurus:Belle II
Comment of the Author/Creator:11 pages, 3 figures, 2 tables, submitted to Physical Review D(R)
External Publication Status:published
Document Type:Article
Communicated by:MPI für Physik
Affiliations:
Identifiers:
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