Publication

Study of B0 → D(*)0π+π- decays

Aurelio Bay
2003
Journal Articles

Abstract

We report on a study of B 0 → D()0 π+π- decays using 29.1 fb-1 of e+e- annihilation data recorded at the γ(4S) resonance with the Belle detector at the KEKB storage ring. Making no assumptions about the intermediate mechanism, the branching fractions for B 0 → D0π+π- and B 0 → D+π+π- are determined to be (8.0 ± 0.6 ± 1.5) x 10-4 and (6.2 ± 1.2 ± 1.8) × 10-4, respectively. An analysis of B 0 → D0π+π- candidates yields to the first observation of the color-suppressed hadronic decay B 0 → D0ρ0 with the branching fraction (2.9 ± 1.0 ± 0.4) × 10-4. We measure the ratio of branching fractions Β(B 0 → D0ρ0)/Β(B 0 → D0ω) = 1.6 ± 0.8. © 2002 Elsevier Science B.V. All rights reserved.

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https://infoscience.epfl.ch/entities/publication/215abe1b-2eb6-41c4-95f0-77a7563d0060

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Aurelio Bay
2003
Journal Articles

Abstract

Official source

https://infoscience.epfl.ch/entities/publication/215abe1b-2eb6-41c4-95f0-77a7563d0060

About this result

Related concepts (22)

Pion

In particle physics, a pion (or a pi meson, denoted with the Greek letter pi: _Pion) is any of three subatomic particles: _Pion0, _Pion+, and _Pion-. Each pion consists of a quark and an antiquark and is therefore a meson. Pions are the lightest mesons and, more generally, the lightest hadrons. They are unstable, with the charged pions _Pion+ and _Pion- decaying after a mean lifetime of 26.033 nanoseconds (2.6033e-8 seconds), and the neutral pion _Pion0 decaying after a much shorter lifetime of 85 attoseconds (8.

C parity

In physics, the C parity or charge parity is a multiplicative quantum number of some particles that describes their behavior under the symmetry operation of charge conjugation. Charge conjugation changes the sign of all quantum charges (that is, additive quantum numbers), including the electrical charge, baryon number and lepton number, and the flavor charges strangeness, charm, bottomness, topness and Isospin (I3). In contrast, it doesn't affect the mass, linear momentum or spin of a particle.

Belle experiment

The Belle experiment was a particle physics experiment conducted by the Belle Collaboration, an international collaboration of more than 400 physicists and engineers, at the High Energy Accelerator Research Organisation (KEK) in Tsukuba, Ibaraki Prefecture, Japan. The experiment ran from 1999 to 2010. The Belle detector was located at the collision point of the asymmetric-energy electron–positron collider, KEKB.

Related publications (2)

Study of B0 → D(*)0π+π- decays

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Measurement of the W Boson Decay Branching Fraction Ratio B(w → Cq)/b(w → Q(q)over-bar′) in Proton-proton Collisions at √s=13tev

Improved measurement of CP violation parameters in Bs0→J/ψK+K− decays in the vicinity of the ϕ(1020) resonance