E787: a search for the rare decay K{sup +}

PDF Version Also Available for Download.

Description

Recent results from the first phase of the E787 experiment and an update on the current status are presented. From the first phase the limit on the K{sup +} {r_arrow} {pi}{sup +}{nu}{ovr {nu}} branching ratio is BR( K{sup +} {r_arrow} {pi}{sup +}{nu}{ovr {nu}}) < 2.4 x 10{sup -9}. An observation of the decay K{sup +} {r_arrow} {pi}{sup +}{mu}{sup +}{mu}{sup -} has been made using two separate techniques. An observation of the decay K{sup +} {r_arrow} {pi}{sup +}{gamma}{gamma} has been made and the distribution of two photon invariant mass is inconsistent with phase space but consistent with chiral perturbation theory. A ... continued below

Physical Description

10 p.

Creation Information

Kettell, S. December 31, 1996.

Context

This article is part of the collection entitled: Office of Scientific & Technical Information Technical Reports and was provided by UNT Libraries Government Documents Department to Digital Library, a digital repository hosted by the UNT Libraries. More information about this article can be viewed below.

Who

People and organizations associated with either the creation of this article or its content.

Author

Sponsor

Publisher

Provided By

UNT Libraries Government Documents Department

Serving as both a federal and a state depository library, the UNT Libraries Government Documents Department maintains millions of items in a variety of formats. The department is a member of the FDLP Content Partnerships Program and an Affiliated Archive of the National Archives.

Contact Us

What

Descriptive information to help identify this article. Follow the links below to find similar items on the Digital Library.

Description

Recent results from the first phase of the E787 experiment and an update on the current status are presented. From the first phase the limit on the K{sup +} {r_arrow} {pi}{sup +}{nu}{ovr {nu}} branching ratio is BR( K{sup +} {r_arrow} {pi}{sup +}{nu}{ovr {nu}}) < 2.4 x 10{sup -9}. An observation of the decay K{sup +} {r_arrow} {pi}{sup +}{mu}{sup +}{mu}{sup -} has been made using two separate techniques. An observation of the decay K{sup +} {r_arrow} {pi}{sup +}{gamma}{gamma} has been made and the distribution of two photon invariant mass is inconsistent with phase space but consistent with chiral perturbation theory. A description of recent upgrades to the detector follows. With the upgraded detector the K{sup +} {r_arrow} {pi}{sup +}{nu}{ovr {nu}} decay should soon be observable. A discussion of the expected sensitivity for K{sup +} {r_arrow} {pi}{sup +}{nu}{ovr {nu}} during the current running period is presented. Possible improvements, in order to make a significant measurement of {vert_bar}V{sub td}{vert_bar}, are discussed. One result from the upgraded detector is a measurement of the structure dependent part (SD{sup +}) of the decay K{sup +} {r_arrow} {mu}{sup +}{nu}{sub {mu}}{gamma} with a branching ratio of BR(SD{sup +}) = (1. 33 {+-} 0.12 {+-} 0.18) X 10{sup -5}.

Physical Description

10 p.

Notes

INIS; OSTI as DE97002905

Source

  • Workshop on heavy quarks at fixed target, St. Goar (Germany), 3-6 Oct 1996

Language

Item Type

Identifier

Unique identifying numbers for this article in the Digital Library or other systems.

  • Other: DE97002905
  • Report No.: BNL--63761
  • Report No.: CONF-9610257--1
  • Grant Number: AC02-76CH00016
  • Office of Scientific & Technical Information Report Number: 459742
  • Archival Resource Key: ark:/67531/metadc677568

Collections

This article is part of the following collection of related materials.

Office of Scientific & Technical Information Technical Reports

Reports, articles and other documents harvested from the Office of Scientific and Technical Information.

Office of Scientific and Technical Information (OSTI) is the Department of Energy (DOE) office that collects, preserves, and disseminates DOE-sponsored research and development (R&D) results that are the outcomes of R&D projects or other funded activities at DOE labs and facilities nationwide and grantees at universities and other institutions.

What responsibilities do I have when using this article?

When

Dates and time periods associated with this article.

Creation Date

  • December 31, 1996

Added to The UNT Digital Library

  • July 25, 2015, 2:21 a.m.

Description Last Updated

  • Nov. 6, 2015, 11:49 p.m.

Usage Statistics

When was this article last used?

Yesterday: 0
Past 30 days: 0
Total Uses: 2

Interact With This Article

Here are some suggestions for what to do next.

Start Reading

PDF Version Also Available for Download.

International Image Interoperability Framework

IIF Logo

We support the IIIF Presentation API

Kettell, S. E787: a search for the rare decay K{sup +}, article, December 31, 1996; Upton, New York. (digital.library.unt.edu/ark:/67531/metadc677568/: accessed May 27, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.