Measurement of the Absolute Branching Fractions B to Dpi, D*pi, D**pi with a Missing Mass Method

TL;DR

This paper measures the absolute branching fractions of B meson decays to D pi, D* pi, and D** pi using a missing mass technique with a large data sample from the BaBar experiment.

Contribution

It introduces a missing mass method to accurately determine B decay branching fractions involving various charm mesons.

Findings

Branching fractions for B to D pi, D* pi, and D** pi were successfully measured.

The method provides a new way to analyze B decays with missing particles.

Results improve understanding of B decay channels and charm meson spectroscopy.

Abstract

We present branching fraction measurements of charged and neutral B decays to Dpi-, D*pi- and D**pi- with a missing mass method, based on a sample of 231 million Y(4S)-->BBar pairs collected by the BaBar detector at the PEP-II e+e- collider. One of the B mesons is fully reconstructed and the other one decays to a reconstructed charged pion and a companion charmed meson identified by its recoil mass, inferred by kinematics. Here D** refers to the sum of all the non-strange charm meson states with masses in the range 2.2-2.8 Gev/c2.