Issues and recommendations for a STEP application protocol framework

Heavy quark and chiral symmetry predictions for semileptonic decaysB¯→D(D*)πℓCheng1, Cheung2, Dimm3 et al. 1993Phys. Rev. D24180View full textAdd to dashboardCite

“…We would like to comment on our work in relation to other recent studies on similar subjects [10,11,12]. Lee, Lu and Wise [10] have extended the earlier formalisms for the K ℓ4 and D ℓ4 decays [13] to D → Kπ lν, D → ππ lν, B → ππ lν, and B → Dπℓν.…”

“…They have calculated the decay rate in the region where chiral perturbation theory is expected to be valid. Kramer and Palmer [12] have discussed the decay B → D * ℓν → Dπℓν in the resonant region and calculated the rate and angular correlation parameters in the framework of chiral and heavy quark symmetry. Lee [11] has generalized the analysis of [10] to the decay B → D * πℓν and has considered only the decay rates with the D * polarizations summed over.…”

“…The definitions of resonanting Dπ (to be identified with D * ) and nonresonanting Dπ are given in Section V. Our results for B → D * ℓν for both charged and neutral B mesons agree with the available data (1.2) and (1.4). Our approach differs from those of [10] and [12]. In [10] it is suggested that the decay rates for B → Dπℓν can be used to fix the D * Dπ coupling constant.…”

A Systematic Approach for Product and Process Data Modeling Based on the Step Standard

“…The methodology that permits the transformation of product data models to generic models of STEP (integrated resources) is called the application protocol development methodology 18,22,32 (Fig. 16).…”

A conceptual architecture for a mechanical parts production system based on STEP

“…There will be many APs defined for STEP. Work is currently underway to ensure that AP development proceeds in a sensible way [Kra91]. APs are the STEP specifications establishing useful and testable product data exchange domains.…”