KL → π 0 ν¯ν at the AGS (E926) ∗
نویسنده
چکیده
A proposed experiment to measure KL → πνν̄ at the AGS (E926) is described. It adopts a unique but general strategy of rare decay measurements with two independent rejection criteria, which allows reliable measurements of background levels. The method employs hermetic veto and full kinematic reconstruction using kaon time of flight and kinematic reconstruction of π. Backgrounds are suppressed to a level well below an anticipated signal in the range 3± 2× 10. talk presented at the “International Workshop on CP Violation in K”, 18-19 December 1998, KEKTanashi, Tokyo For the E926 collaboration (BNL, INR(Moscow), Kyoto, U.N.M., U.B.C., Jefferson Lab., TRIUMF, V.P.I., Yale), Email address: [email protected]
منابع مشابه
PRELIMINARY RESULTS FOR EXCLUSIVE b → uℓν DECAYS FROM CLEO
A preliminary analysis of exclusive b → uℓν decays to the final states π ∓ ℓ ± ν, π 0 ℓ ± ν, ρ ∓ ℓ ± ν, ρ 0 ℓ ± ν and ωℓ ± ν based on 2.2 × 10 6 B ¯ B decays collected at CLEO is presented. We have measured the first exclusive b → uℓν branching fraction B(B 0 → π − ℓ + ν) =), with the ISGW (WSB) model used for efficiency determination. A 90% C.L. upper limit on B(B 0 → ρ − ℓ + ν) similar to the...
متن کاملnucleon ∗
Fixed-t subtracted dispersion relations are presented for Compton scattering off the nucleon at energies E γ ≤ 500 MeV, as a formalism to extract the nucleon polariz-abilities with a minimum of model dependence. The scalar polarizability difference α − β and the backward spin polarizability γ π enter directly as fit parameters in this formalism. Compton scattering off the nucleon is determined ...
متن کاملThe Real Zeros of the Derivatives of Cylinder Functions of Negative Order
We study the real x–zeros of the derivative C ν (x) of the cylinder function Cν(x) = Cν(x, α) = cosαJν(x) − sinαYν(x) for ν < 0. For fixed α, 0 ≤ α < π and n = 1, 2, . . ., we show the existence of a number νn in the interval −n+ α/π − 1 < ν < −n+ α/π such that the first positive zero of C ν (x) occurs after the first positive zero of Cν(x) when −n− 1 + α/π < ν < νn and before the first positiv...
متن کاملFlavor changing neutral current processes in B and K decays in the supergravity model
Flavor changing neutral current processes in B and K decays in the supergravity model 1 * Abstract Flavor changing neutral current processes such as b → s γ, b → s l + l − , b → s ν ν, ǫ K , ∆m B , K + → π + ν ν and K L → π 0 ν ν are calculated in the supersymmetric standard model based on supergravity. We consider two assumptions for the soft supersym-metry breaking terms. In the minimal case ...
متن کاملMultiple Point Interpolation in Nevanlinna Classes
has at most π positive (ν negative) squares, and that for some choice of n and z1, . . . , zn this upper bound is attained. If there is no upper bound for the number of positive (negative) squares of the forms (1) put π = ∞ (ν = ∞). We consider only such classes N πν where at least one index is finite. Denote by N ν the union N ν = ⋃ ∞ π=0 N π ν where ν is finite. A multiple point interpolation...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
عنوان ژورنال:
دوره شماره
صفحات -
تاریخ انتشار 1999