A study of the semimuonic decays of the D

Kodama, K.; Ushida, N.; Mokhtarani, A.; Paolone, V.; Volk, J.; Wilcox, J.; Yager, P. M.; Edelstein, R. M.; Freyberger, A.; Gibaut, D.; Lipton, R.; Nichols, W. R.; Potter, Douglas M.; Russ, J.; Zhang, C.; Zhang, Y.; Jang, H. I.; Kim, J.Y.; Kim, T.I.; Lim, I. T.; Pac, M. Y.; Baller, B.; Stefanski, R. J.; Nakazawa, Kimitaka; Chung, K.S.; Chung, S. H.; Kim, D.C.; Park, I.G.; Park, M.S.; Song, J.; Yoon, C. S.; Chikawa, M.; Abe, T.; Fujii, T.; Fujioka, G.; Fujiwara, K.; Fukushima, Hiroshi; Hara, T.; Takahashi, Yoshiki; Taruma, K.; Tsuzuki, Y.; Yokoyama, Chiaki; Chang, S. D.; Cheon, B. G.; Cho, J.H.; Kang, J. S.; Kim, C.O.; Kim, K.Y.; Kim, T.Y.; Lee, J.C.; Lee, S.B.; Lim, G. Y.; Nam, S.; Shin, T.; Sim, K. S.; Woo, Jong-Kwan; Isokane, Y.; Tsuneoka, Y.; Aoki, S.; Gauthier, A.; Hoshino, K.; Kitamura, Hirokazu; Kobayashi, M.; Miyanishi, M.; Nakamura, K.; Nakamura, Mitsuhiro; Nakamura, Yuya; Nakanishi, S.; Niu, K.; Niwa, K.; Nomura, M. A.; Tajima, H.; Yoshida, S.; Aryal, M.; Dunlea, J.; Frederiksen, S. G.; Kuramata, S.; Lundberg, B.; Oleynik, G.; Reay, N. W.; Reibel, K.; Sidwell, R. A.; Stanton, N. R.; Moriyama, K.; Shibata, Hiroyuki; Kalbfleisch, G.; Skubic, P.; Snow, J.; Willis, S.; Kusumoto, O.; Ohashi, Shinji; Okusawa, T.; Teranaka, M.; Tominaga, T.; Yoshida, T.; Yuuki, H.; Okabe, H.; Yokota, J.; Adachi, Minoru; Ikegami, Isamu; Kazuno, M.; Niu, E.; Shibuya, H.; Watanabe, Shuji; Sato, Y.; Seshimo, M.; Tezuka, I.; Bahk, S. Y.; Kim, S.K.

doi:10.1016/0370-2693(93)90965-k

Cited by 21 publications

(7 citation statements)

References 14 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…constrains the parameters x and y to an allowed domain of the x, y plane ( limited by x and y non-negative a suggested by all phenomenological models ). Such a domain can then be compared with the values of x and y already measured in the semileptonic modes [1,3,4]. We remind the reader that semileptonic data are analyzed with monopole q 2dependence for all form factors which is just one of the scenarios we discuss.…”

Section: Introductionmentioning

confidence: 99%

“…All positive values of x and y are allowed up to the boundary curve. Experiments [3,4] on semileptonic decays, D + s → φℓ + ν ℓ , have determined x and y using the assumptions of scenario I. We have plotted their points in Fig.…”

Section: Introductionmentioning

confidence: 99%

“…1 too. We note that the point from E-653 [3] is excluded by the constraint set by R h while the point from E-687 [4] has a small overlap with the domain determined from R h . In our analysis the two errors in (14) were added in quadrature and we used the leptonic decay constants f π + = 131.7 MeV and f ρ + = 212 MeV in Eqs.…”

Section: Introductionmentioning

confidence: 99%

“…Unfortunately, experimental measurement of the true q 2 -distribution of the semileptonic decays has not yet been possible because the momentum of the D + s decaying in flight is not known [14] which, in turn, implies that the q 2 for an event is not accurately known. However, two experiments, E-653 [3] and E-687 [4] have determined the parameters x and y, assuming scenario I for the q 2 -dependence of the form factors, from the semileptonic decay D + s → φℓ + ν ℓ . In the following we exploit this knowledge in absence of information on the q 2 -distribution dΓ/dq 2 .…”

Section: Introductionmentioning

confidence: 99%

“…which depends on x and y, and on the type of q 2 -variation of the hadronic form factors. We first construct an "experimental" X(t 2 ), denoted by X(t 2 ) in the following, using the experimental values of x and y obtained from a triple angular fit of the data [3,4] in the scenario I. We then compute the same quantity, X(t 2 ), for the values of x and y inside the allowed domains determined by us from R h and shown in Figs.…”

Section: Introductionmentioning

confidence: 99%

See 4 more Smart Citations

Implications of factorization for the determination of hadronic form factors in Ds+→φ transition

Gourdin¹,

Kamal²,

Keum³

et al. 1994

Physics Letters B

View full text Add to dashboard Cite

Using factorization we determine the allowed domains of the ratios of form factors, x = A 2 (0)/A 1 (0) and y = V (0)/A 1 (0), from the experimentally measured ratio R h ≡ Γ(D + s → φρ + )/Γ(D + s → φπ + ) assuming three different scenarios for the q 2 -dependence of the form factors. We find that the allowed domains overlap with those obtained by using the experimentally measured ratio R sℓ = Γ(D + s → φℓ + ν ℓ )/Γ(D + s → φπ + ) provided that the phenomenological parameter a 1 is 1.23. Such a comparison presents a genuine test of factorization. We calculate the longitudinal polarization fraction,, in the three scenarios for the q 2dependence of the form factors and emphasize the importance of measuring Γ L /Γ. Finally we discuss the q 2 -distribution of the semileptonic decay and find that it is rather insensitive to the scenarios for the q 2 -dependence of the form factors, and unless very accurate data can be obtained it is unlikely to discriminate between the different scenarios. Useful information on the value of x might be obtained by the magnitude of the q 2 -distribution near q 2 = 0. However the most precise information on x and y would come from the knowledge of the longitudinal and left-right transverse polarizations of the final vector mesons in hadronic and/or semileptonic decays.

show abstract

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Implications of factorization for the determination of hadronic form factors in Ds+→φ transition

Gourdin¹,

Kamal²,

Keum³

et al. 1994

Physics Letters B

View full text Add to dashboard Cite

show abstract

Charm semi-leptonic decays and measurements of the form factors

Perasso

1996

Nuov Cim A

View full text Add to dashboard Cite

Nonfactorization and the decaysD s +→φπ +,φρ + andφl + ν l

Kamal¹,

Santra²

1996

Z. Phys. C - Particles and Fields

View full text Add to dashboard Cite

In six chosen scenarios for the q 2 dependence of the form factors involved in D + s → φ transition, we have determined the allowed domain of x = A 2 (0)/A 1 (0) and y = V (0)/A 1 (0) from the experimentally measured ratiosin a scheme that uses the N c = 3 value of the phenomenological parameter a 1 and includes nonfactorized contribution. We find that the experimentally measured values of x and y from semileptonic decays of D + s favor solutions which have significant nonfactorized contribution, and, in particular, R sl favors solutions in scenarios where A 1 (q 2 ) is either flat or decreasing with q 2 .

show abstract

A study of the semimuonic decays of the D

Cited by 21 publications

References 14 publications

Implications of factorization for the determination of hadronic form factors in Ds+→φ transition

Implications of factorization for the determination of hadronic form factors in Ds+→φ transition

Charm semi-leptonic decays and measurements of the form factors

Nonfactorization and the decaysD s +→φπ +,φρ + andφl + ν l

Contact Info

Product

Resources

About