QCD corrections to [Formula presented]

Physical Review D - Particles, Fields, Gravitation and Cosmology

Volumn 56, Issue 3, 1997, Pages 1632-1637

  Soares, João M ^a   Torma, Tibor ^a  

^a UNIVERSITY OF MASSACHUSETTS   (United States)

Author keywords

[No Author keywords available]

Indexed keywords

EID: 0642273468     PISSN: 15507998     EISSN: 15502368     Source Type: Journal    
DOI: 10.1103/PhysRevD.56.1632     Document Type: Article

References (16)

1. G. T. Bodwin, E. Braaten, T. C. Yuan, and G. P. Lepage, Phys. Rev. D 46, R3703 (1992);
2. G. T. Bodwin, E. Braaten, and G. P. Lepage, 51, 1125 (1995).
3. P. Ko, J. Lee, and H. S. Song, Phys. Rev. D 53, 1409 (1996);
4. S. Fleming, O. F. Hernández, I. Maksymyk, and Hélène Nadeau, 55, 4098 (1997).
5. L. Bergström and P. Ernström, Phys. Lett. B 328, 153 (1994).
6. A. J. Buras, Nucl. Phys. B434, 606 (1995).
7. Particle Data Group, R. M. Barnett et al., Phys. Rev. D 54, 1 (1996).
8. J. M. Soares, Phys. Rev. D 53, 241 (1996). Here, we use a slightly different definition of the parameters (Formula presented)
9. J. M. Soares, Phys. Rev. D 52, 242 (1995). The expression in there for the absorptive part of the (Formula presented) amplitude can be simplified and written in the form of our Eq. (14). The imaginary part of the parameters (Formula presented) corresponds to what we have found here.
10. A. J. Buras and P. H. Weisz, Nucl. Phys. B333, 66 (1990).
11. N. Cabibbo and L. Maiani, Phys. Lett. 79B, 109 (1978).
12. The approximate formula for (Formula presented) can be found in G. Corbo, Nucl. Phys. B212, 99 (1983).
13. We have used instead the exact, but cumbersome, expression in Y. Nir, Phys. Lett. B 221, 184 (1989).
14. C. Greub, T. Hurth, and D. Wyler, Phys. Rev. D 51, 2217(1995) (see references therein).
15. A. Falk, M. Luke, and M. Savage, Phys. Rev. D 49, 3367 (1994).
16. Instead of the LLA result for the color-singlet contribution to (Formula presented) that appears in Ref. 2, one can now use our result of Eqs. (15) and (25), with (Formula presented) replaced by (Formula presented)