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Preparing an Isotopically Pure 229Th Ion Beam for Studies of 229mTh
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Published on: May 3, 2019

Search for B+-->D*+pi0 decay.

M Iwabuchi1, M Nakao, I Adachi

  • 1The Graduate University for Advanced Studies, Hayama.

Physical Review Letters
|September 4, 2008
PubMed
Summary
This summary is machine-generated.

Researchers searched for a rare B+ meson decay (B+-->D*+pi0) using Belle detector data. No significant signal was observed, leading to an upper limit on this decay

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Published on: November 15, 2013

Area of Science:

  • Particle Physics
  • High-Energy Physics
  • B-Physics

Background:

  • The B+ meson is a key probe for studying fundamental symmetries in particle physics.
  • Doubly Cabibbo-suppressed decays offer unique insights into quark mixing and CP violation.
  • Previous searches for B+-->D*+pi0 have not yielded significant results.

Purpose of the Study:

  • To search for the rare doubly Cabibbo-suppressed decay B+-->D*+pi0.
  • To set an upper limit on the branching fraction of this decay.
  • To constrain the ratio of decay amplitudes for B-->D*pi processes.

Main Methods:

  • Analysis of a large dataset (657x10^6 BB pairs) collected at the Upsilon(4S) resonance.
  • Utilized data from the Belle detector at the KEKB asymmetric-energy e+e- collider.
  • Statistical analysis to search for a signal and establish an upper limit.

Main Results:

  • No significant signal for the B+-->D*+pi0 decay was observed.
  • An upper limit on the branching fraction was set at B(B+-->D*+pi0) < 3.6x10^-6 at the 90% confidence level.
  • This result constrains the ratio of suppressed to favored decay amplitudes to r < 0.051 at the 90% confidence level.

Conclusions:

  • The search for the B+-->D*+pi0 decay yielded no significant signal.
  • The established upper limit provides valuable constraints on theoretical models of B meson decays.
  • This finding contributes to a better understanding of CKM matrix elements and flavor physics.