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Title: Proposal to Participate in J-Parc KL Experiment

Abstract

During the previous grant period we have been working on the J-PARC KL E14 (KOTO) experiment with the goal to discover and measure the rate of the rare decay neutral kaons to a pion and two neutrinos. This CP-violating flavor changing neutral current decay proceeds through second-order weak interactions. Other, as yet undiscovered particles, which can mediate the decay could provide an enhancement to the branching ratio, which in the Standard Model predicted to be about 2.80 x 10-11. The experiment is expected to observe 100 events at the Standard Model branching ratio for a 10% measurement. The experiment is a follow-up to E391a at KEK and has been approved as experiment E14 at J-PARC. The main barrel vacuum vessel, the charged veto detectors, and the main barrel photon veto system will be reused from E391a. The main calorimeter has been replaced with Cesium Iodide crystals that are both smaller to provide improved shower reconstruction and longer to prevent energy leakage out of the back of the calorimeter. New trigger and data acquisitions electronics will be used.

Authors:
 [1];  [1]
  1. Univ. of Michigan, Ann Arbor, MI (United States)
Publication Date:
Research Org.:
Univ. of Michigan, Ann Arbor, MI (United States)
Sponsoring Org.:
USDOE Office of Science (SC), High Energy Physics (HEP)
OSTI Identifier:
1061477
Report Number(s):
DOE/SC0002644-1
DOE Contract Number:  
SC0002644
Resource Type:
Technical Report
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; Kaon; rare decay; koto jparc

Citation Formats

Campbell, Myron, and Tecchio, Monica. Proposal to Participate in J-Parc KL Experiment. United States: N. p., 2013. Web. doi:10.2172/1061477.
Campbell, Myron, & Tecchio, Monica. Proposal to Participate in J-Parc KL Experiment. United States. https://doi.org/10.2172/1061477
Campbell, Myron, and Tecchio, Monica. 2013. "Proposal to Participate in J-Parc KL Experiment". United States. https://doi.org/10.2172/1061477. https://www.osti.gov/servlets/purl/1061477.
@article{osti_1061477,
title = {Proposal to Participate in J-Parc KL Experiment},
author = {Campbell, Myron and Tecchio, Monica},
abstractNote = {During the previous grant period we have been working on the J-PARC KL E14 (KOTO) experiment with the goal to discover and measure the rate of the rare decay neutral kaons to a pion and two neutrinos. This CP-violating flavor changing neutral current decay proceeds through second-order weak interactions. Other, as yet undiscovered particles, which can mediate the decay could provide an enhancement to the branching ratio, which in the Standard Model predicted to be about 2.80 x 10-11. The experiment is expected to observe 100 events at the Standard Model branching ratio for a 10% measurement. The experiment is a follow-up to E391a at KEK and has been approved as experiment E14 at J-PARC. The main barrel vacuum vessel, the charged veto detectors, and the main barrel photon veto system will be reused from E391a. The main calorimeter has been replaced with Cesium Iodide crystals that are both smaller to provide improved shower reconstruction and longer to prevent energy leakage out of the back of the calorimeter. New trigger and data acquisitions electronics will be used.},
doi = {10.2172/1061477},
url = {https://www.osti.gov/biblio/1061477}, journal = {},
number = ,
volume = ,
place = {United States},
year = {Sun Feb 03 00:00:00 EST 2013},
month = {Sun Feb 03 00:00:00 EST 2013}
}