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Search for CP violation in Ξ and A hyperon decays: Status of the HyperCP experiment

✍ Scribed by Craig Dukes

Publisher
Elsevier Science
Year
1999
Tongue
English
Weight
504 KB
Volume
75
Category
Article
ISSN
0920-5632

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✦ Synopsis

HyperCP (E871), a Fermilab experiment searching for CP violation in ~. and A hyperon decays, finished its first data taking run at the end of 1997, and accumulated over one billion --and -~+ decays. A sensitivity of approximately 2x10 -4 in A-A = (a=_aA --a~a-K)/(a=_aA + a=--aX) is expected. A non-zero value of AEA would be unambiguous evidence for direct CP violation. A brief review of CP violation in hyperon decays is given, the HyperCP spectrometer is described, and the status of the analysis and future prospects are discussed.

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Search for direct CP violation in Λ and
Search for direct CP violation in Λ and Ξ hyperon decays
✍ C.G. White; R.A. Burnstein; M. Carmack; A. Chakravorty; A. Chan; Y.C. Chen; W.S. 📂 Article 📅 1999 🏛 Elsevier Science 🌐 English ⚖ 457 KB

A sensitive search for direct CP violation in E-(E+) and A (3,) decays is underway at FNAL. Experiment E871 (HyperCP) intends to perform a precision measurement of the angular distribution of protons (anti-protons) with respect to the helicity axis in the rest frame of the A (/k). The slopes of thes