Observation of B-->K(0)(S)pi(+)pi(-) and Evidence for B-->K(*+/-)pi(-/+)

Area of Science:

• High-energy particle physics
• Experimental particle physics
• B meson physics

Background:

• B mesons are crucial for testing the Standard Model of particle physics.
• Understanding B meson decays provides insights into fundamental interactions.
• Previous studies have explored various B meson decay modes.

Purpose of the Study:

• To search for specific charmless hadronic B decays.
• To measure the branching fractions of observed decays.
• To contribute experimental data to the field of particle physics.

Main Methods:

• Analysis of 13.5 fb(-1) of integrated luminosity data.
• Data collected by the CLEO detector near sqrt(s)=10.6 GeV.
• Identification of three-body final states: K(0)(S)h(+)pi(-), K(+)h(-)pi(0), and K(0)(S)h(+)pi(0).

Main Results:

• Observation of the decay B-->K0pi(+)pi(-) with a branching fraction of (50(+10)(-9)(stat.)+/-7(syst.))x10(-6).
• Observation of the decay B-->K(*+)(892)pi(-) with a branching fraction of (16(+6)(-5)(stat.)+/-2(syst.))x10(-6).
• Searched for other specified charmless hadronic B decays.

Conclusions:

• The study successfully observed two specific charmless hadronic B decays.
• Measured branching fractions provide valuable experimental data.
• These results enhance the understanding of B meson decay properties.