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Study of the D0 ---> K+ K- pi+ pi-

Description: Using data from the FOCUS (E831) experiment at Fermilab, the authors present a new measurement for the Cabibbo-suppressed decay mode D{sup 0} {yields} K{sup +}K{sup -}{pi}{sup +}{pi}{sup -}. They measure: {Lambda}(D{sup 0} {yields} K{sup +}K{sup -}{pi}{sup +}{pi}{sup -})/{Lambda}(D{sup 0} {yields} K{sup -}{pi}{sup -}{pi}{sup +}{pi}{sup +}) = 0.0295 {+-} 0.0011 {+-} 0.0008. An amplitude analysis has been performed in order to determine the resonant substructure of this decay mode. The dominant c… more
Date: November 1, 2004
Creator: Link, J. M.; Yager, P. M.; /UC, Davis; Anjos, J. C.; Bediaga, I.; Gobel, C. et al.
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Partner: UNT Libraries Government Documents Department
open access

Measurement of the doubly Cabibbo suppressed decay D0 ---> K+ pi- and a search for charm mixing

Description: The authors present an analysis of the decay D{sup 0} {yields} K{sup +}{pi}{sup -} based on FOCUS data. From a sample of 234 signal events, they find a branching ratio of {Lambda}(D{sup 0} {yields} K{sup +}{pi}{sup -})/{Lambda}(D{sup 0} {yields} K{sup -}{pi}{sup +}) = (0.429{sub -0.061}{sup +0-.063} {+-} 0.027)% under the assumptions of no mixing and no CP violation. Allowing for CP violation, the find a branching ratio of (0.435{sub -0.061}{sup +0.063} {+-} 0.028)% and a CP asymmetry of 0.178{… more
Date: December 1, 2004
Creator: Link, J. M.; Yager, P. M.; /UC, Davis; Anjos, J. C.; Bediaga, I.; Gobel, C. et al.
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Partner: UNT Libraries Government Documents Department
open access

Hadronic mass spectrum analysis of D+ ---> K- pi+ mu+ nu decay and measurement of the K*(892)0 mass and width

Description: We present a K{pi} mass spectrum analysis of the four-body semileptonic charm decay D{sup +} {yields} K{sup -}{pi}{sup +}{mu}{sup +}{nu} in the range of 0.65 GeV/c{sup 2} < m{sub K{pi}} < 1.5 GeV/c{sup 2}. We observe a non-resonant contribution of 5.30 {+-} 0.74{sub -0.51}{sup +0.99}% with respect to the total D{sup +} {yields} K{sup -} {pi}{sup +}{mu}{sup +}{nu} decay. For the K*(892){sup 0} resonance, we obtain a mass of 895.41 {+-} 0.32{sub -0.36}{sup +0.35} NeV/c{sup 2}, a width of 47… more
Date: March 1, 2005
Creator: Link, J. M.; Yager, P. M.; /UC, Davis; Anjos, J. C.; Bediaga, I.; Gobel, C. et al.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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