Measurement of the Form-Factor Ratios for D{sup +}{r_arrow}{bar K}{sup {asterisk}0}e{sup +}{nu}{sub e}

Journal Article · Sat Jan 31 23:00:00 EST 1998 · Physical Review Letters

OSTI ID:615243

Amato, S; Anjos, J C; Bediaga, I; Carvalho, H S; de Mello Neto, J R; de Miranda, J M; dos Reis, A C; Santoro, A F; Solano, J ^[1]; Gagnon, G P; Leslie, J; OShaughnessy, K ^[2]; Meadows, B; dOliveira, A B; Perera, L P; Santha, A K; Sokoloff, M D ^[3]; Herrera, G; Sheaff, M ^[4]; Appel, J A ; Banerjee, S; Carter, T; Denisenko, K; Halling, A M; James, C; Kwan, S; Lundberg, B; Thorne, K ^[5]; Burnstein, R A; Kasper, P A; Peng, K C; Rubin, H A ^[6]; Mihalcea, D; Nguyen, A; Reay, N W; Sidwell, R A; Stanton, N R; Witchey, N; Yoshida, S; Zhang, C ^[7]; Blaylock, G ^[8]; Aitala, E M; Cremaldi, L M; Gounder, K; Quinn, B; Rafatian, A; Reidy, J J; Sanders, D A; Summers, D J; Yi, D ^[9]; Tripathi, A K ^[10]; Langs, D C; Schwartz, A J; Wiener, J ^[11]; Fernandez, A; dOliveira, A B ^[12]; Copty, N K; Fox, G; Purohit, M V ^[13]; Burchat, P R; Zaliznyak, R ^[14]; Ashery, D; Hurvits, G; MayTal-Beck, S; Weiss-Babai, R ^[15]; Bracker, S B ^[16]; Milburn, R H; Napier, A ^[17]

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1. Centro Brasileiro de Pesquisas Fisicas, Rio de Janeiro (Brazil)
2. University of California, Santa Cruz, California 95064 (United States)
3. University of Cincinnati, Cincinnati, Ohio 45221 (United States)
4. CINVESTAV (Mexico)
5. Fermilab, Batavia, Illinois 60510 (United States)
6. Illinois Institute of Technology, Chicago, Illinois 60616 (United States)
7. Kansas State University, Manhattan, Kansas 66506 (United States)
8. University of Massachusetts, Amherst, Massachusetts 01003 (United States)
9. University of Mississippi-Oxford, University, Mississippi 38677 (United States)
10. The Ohio State University, Columbus, Ohio 43210 (United States)
11. Princeton University, Princeton, New Jersey 08544 (United States)
12. Universidad Autonoma de Puebla (Mexico)
13. University of South Carolina, Columbia, South Carolina 29208 (United States)
14. Stanford University, Stanford, California 94305 (United States)
15. Tel Aviv University, Tel Aviv (Israel)
16. Box 1290, Enderby, BC, V0E 1V0 (Canada)
17. Tufts University, Medford, Massachusetts 02155 (United States)

We present a measurement of the form-factor ratios r{sub V}=V(0)/A{sub 1}(0) and r{sub 2}=A{sub 2}(0)/A{sub 1} (0) for the decay D{sup +}{r_arrow}{bar K}{sup {asterisk}0}e{sup +}{nu}{sub e}. The measurement is based on a signal of approximately 3000 D{sup +}{r_arrow}{bar K}{sup {asterisk}0}e{sup +}{nu}{sub e}, {bar K}{sup {asterisk}0}{r_arrow}K{sup {minus}}{pi}{sup +} decays reconstructed in data from charm hadroproduction experiment E791 at Fermilab. The results are r{sub V}=1.84{plus_minus}0.11{plus_minus}0.08 and r{sub 2}=0.71{plus_minus}0.08{plus_minus}0.09 . {copyright} {ital 1998} {ital The American Physical Society}

• OSTI ID: 615243
• Journal Information: Physical Review Letters, Journal Name: Physical Review Letters Journal Issue: 7 Vol. 80; ISSN 0031-9007; ISSN PRLTAO
• Country of Publication: United States
• Language: English

Related Subjects

66 PHYSICS
D MESONS
ELECTRON NEUTRINOS
ELECTRONS
FORM FACTORS
KAONS
KOBAYASHI-MASKAWA MATRIX
LORENTZ INVARIANCE
MASS
MIXING
SEMILEPTONIC DECAY