Analysis of D0 -> K+ pi- pi0 Decays: Search for D0-D0bar Mixing, and Measurements of the Doubly Cabibbo-Suppressed Decay Rate and Resonance Contributions
Analyzing D{sup 0} {yields} K{sup +}{pi}{sup -}{pi}{sup 0} decays, herein are presented the methods and results of a search for D{sup 0}-{bar D}{sup 0} mixing, a measurement of the branching ratio R {equivalent_to} {Lambda}(D{sup 0} {yields} K{sup +}{pi}{sup -}{pi}{sup 0})/{Lambda}(D{sup 0} {yields} K{sup -}{pi}{sup +}{pi}{sup 0}), and measurements of the contributions from D{sup 0} {yields} K{sup +}{rho}{sup -}, K*{sup +}{pi}{sup -}, K*{sup 0}{pi}{sup 0}; 230.4 fb{sup -1} of data collected from the BABAR detector at the PEP-II collider during 2000-2004 (Runs 1-4) are analyzed. An event-level tagging technique is developed, which facilitates the accurate determination of doubly Cabibbo-suppressed resonance contributions by suppressing background from Cabibbo-favored decays. The branching ratio is measured as R = (0.214 {+-} 0.008 (stat) {+-} 0.008 (syst))%, with (46.1 {+-} 3.3 (stat) {+-} 2.9 (syst))% of D{sup 0} {yields} K{sup +}{pi}{sup -}{pi}{sup 0} decays proceeding through the channel D{sup 0} {yields} K*{sup +}{pi}{sup -}. The data are consistent with the null-D-mixing hypothesis at a confidence level of 10%, and the expected value of {+-} {radical}(x{sup 2} + y{sup 2}) is measured as -0.013 {+-} 0.010 (stat), indicating negative interference between mixing and doubly Cabibbo-suppressed decay. The expected value of the integrated mixing rate is (x{sup 2} + y{sup 2})/2 = (0.013 {+-} 0.013 (stat))%.
- Research Organization:
- Stanford Linear Accelerator Center (SLAC)
- Sponsoring Organization:
- USDOE
- DOE Contract Number:
- AC02-76SF00515
- OSTI ID:
- 877513
- Report Number(s):
- SLAC-R-792
- Country of Publication:
- United States
- Language:
- English
Similar Records
Search for D0 - anti-D0 Mixing and Branching-Ratio Measurement in the Decay D0 to K+ pi- pi0
Search for D{sup 0}-D{sup 0} Mixing and Branching-Ratio Measurement in the Decay D{sup 0}{yields}K{sup +}{pi}{sup -}{pi}{sup 0}
Study of b{yields}c interference in the decay B{sup -}{yields}[K{sup +}{pi}{sup -}]{sub D}K*{sup -}
Journal Article
·
Tue Sep 26 00:00:00 EDT 2006
· Physical Review Letters
·
OSTI ID:892615
Search for D{sup 0}-D{sup 0} Mixing and Branching-Ratio Measurement in the Decay D{sup 0}{yields}K{sup +}{pi}{sup -}{pi}{sup 0}
Journal Article
·
Thu Nov 30 23:00:00 EST 2006
· Physical Review Letters
·
OSTI ID:20861413
Study of b{yields}c interference in the decay B{sup -}{yields}[K{sup +}{pi}{sup -}]{sub D}K*{sup -}
Journal Article
·
Sat Oct 01 00:00:00 EDT 2005
· Physical Review. D, Particles Fields
·
OSTI ID:20713608