Об автоморфизмах сильно регулярных графов с параметрами (99, 42, 21, 15) и (99, 56, 28, 36)

an 2 00 0 CLNS 99 / 1655 CLEO 99 - 21

We report results of a search for the rare radiative decay B̄0 → Dγ. Using 9.66 × 10 BB̄ meson pairs collected with the CLEO detector at the Cornell Electron Storage Ring, we set an upper limit on the branching ratio for this decay of 5.0×10 at 90% CL. This provides evidence that anomalous enhancement is absent in W -exchange processes and that weak radiative B decays are dominated by the short-d...

INP MSU Preprint 99 – 42 / 600

1 99 7 CTP - TAMU - 42 / 97 ACT - 15 / 97 M - Phenomenology

Recent developments involving strongly coupled superstrings are discussed from a phenomenological point of view. In particular, strongly coupled E8 ×E′ 8 is described as an appropriate long-wavelength limit of M-theory, and some generic phenomenological implications are analyzed, including a long sought downward shift of the string unification scale and a novel way to break supersymmetry. A spe...

مفهوم نظارت در اصل 99 قانون اساسی

قانون اساسی مهمترین سند و میثاق مدون ملی است که عمل به آن در راستای تضمین منافع ملت و آحاد مردم با نظم و امنیتی که در رابطه افراد بایکدیگر، دولت نسبت به مردم و مردم نسبت به دولت ایجاد می‌نماید، ضروری و غیر قابل مناقشه است. از این جهت فهم دقیق اصول این قانون و مفاهیم به کار گرفته شده در آن ضرورتی بسیار می‌یابد. چه آنکه هر گونه برداشت و تفسیری که منطبق با روح و متن قانون اساسی نباشد تحقق آرمان نظ...

/ 99 04 36 6 v 2 1 9 A pr 1 99 9 OSU - HEP - 99 - 01 CTP - TAMU

In a recent paper, we showed that tree level up-down unification of fermion Yukawa couplings is a natural consequence of a large class of supersymmetric models. They can lead to viable quark masses and mixings for moderately large values of tanβ with interesting and testable predictions for CP violation in the hadronic sector. In this letter, we extend our discussion to the leptonic sector focu...