Publication

Measurement of the branching fractions for B→ωK and B→ωπ

2004
Journal Articles

Abstract

We report improved measurements of branching fractions for charmless hadronic two-body B meson decays containing an ω meson in the final state. The results are based on a data sample of 78 fb-1 collected on the Y(4S) resonance by the Belle detector. We measure the branching fractions B(B+→ωK+) = (6.5-1.2 +1.3±0.6) × 10-6 and B(B +→ωπ+) = (5.7-1.3 +1.4±0.6) × 10-6. We give 90% confidence upper limits for B(B0→ωK0)

Official source

https://infoscience.epfl.ch/entities/publication/579ea6b8-34c0-44f2-9d3e-0c802f0a279c

About this result

This page is automatically generated and may contain information that is not correct, complete, up-to-date, or relevant to your search query. The same applies to every other page on this website. Please make sure to verify the information with EPFL's official sources.

Graph Chat

Chat with Graph Search

Ask any question about EPFL courses, lectures, exercises, research, news, etc. or try the example questions below.

DISCLAIMER: The Graph Chatbot is not programmed to provide explicit or categorical answers to your questions. Rather, it transforms your questions into API requests that are distributed across the various IT services officially administered by EPFL. Its purpose is solely to collect and recommend relevant references to content that you can explore to help you answer your questions.

2004
Journal Articles

Abstract

Official source

https://infoscience.epfl.ch/entities/publication/579ea6b8-34c0-44f2-9d3e-0c802f0a279c

About this result

Related concepts (25)

Rho meson

In particle physics, a rho meson is a short-lived hadronic particle that is an isospin triplet whose three states are denoted as _Rho+, _Rho0 and _Rho-. Along with pions and omega mesons, the rho meson carries the nuclear force within the atomic nucleus. After the pions and kaons, the rho mesons are the lightest strongly interacting particle, with a mass of 775.45MeV for all three states. The rho mesons have a very short lifetime and their decay width is about 145MeV with the peculiar feature that the decay widths are not described by a Breit–Wigner form.

Omega meson

The omega meson (_Omega meson) is a flavourless meson formed from a superposition of an up quark–antiquark and a down quark–antiquark pair. It is part of the vector meson nonet and mediates the nuclear force along with pions and rho mesons. The most common decay mode for the ω meson is _Pion+_Pion0_Pion- at 89.2±0.7%, followed by _Pion0_Gamma at 8.34±0.26%. The quark composition of the _Omega meson meson can be thought of as a mix between _up quark_up antiquark, _down quark_down antiquark and _strange quark_strange antiquark states, but it is very nearly a pure symmetric _up quark_up antiquark-_down quark_down antiquark state.

Meson

In particle physics, a meson (ˈmiːzɒn,_ˈmɛzɒn) is a type of hadronic subatomic particle composed of an equal number of quarks and antiquarks, usually one of each, bound together by the strong interaction. Because mesons are composed of quark subparticles, they have a meaningful physical size, a diameter of roughly one femtometre (10^−15 m), which is about 0.6 times the size of a proton or neutron. All mesons are unstable, with the longest-lived lasting for only a few tenths of a nanosecond.

Related publications (32)

Measurement of the branching fractions for B→ωK and B→ωπ

Chat with Graph Search

Measurement of γ using B± → DK± and B± → Dπ± decays with $ D\to {K}_{\mathrm{S}}^0{\pi}^{+}{\pi}^{-} $ and $ D\to {K}_{\mathrm{S}}^0{K}^{+}{K}^{-} $

Observation of Bc+ →Dh+h- Decays

𝐵-jet fragmentation with 𝐵± →𝐽/𝜓⁢𝐾± decays in √𝑠 =13 TeV 𝑝⁢𝑝 collisions at LHCb