Published November 1987 | Version v1
Report Restricted

Observation of D/sub s/+ → eta πμ, and a new limit on D+ → μ+ nu/sub μ/ and f/sub D/

Creators

Description

We report two new results on charmed D+ and /sub s/+ decays, obtained using the Mark III detector at the e+e- storage ring SPEAR. We report the first observation of the decay D/sub s/+ → eta π+. The product branching fraction is measured to be σ(e+e- → D/sub s/+D/sub s/*- + c.c.) x B(D/sub s/+ → eta π+) = (74 +- 19 +- 25) pb. Second, we describe a search for the leptonic decay D+ → μ+ eta/sub μ/. A 90% confidence level upper limit on B)D+ → μ+ eta/sub μ/) of 7.2 x 10-4 is obtained, corresponding to an upper bound of 290 MeV/c2 on the pseudoscalar decay constant f/sub D/

Availability note (English)

Available from NTIS, PC A02; 3 as DE88003278.

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Additional details

Publishing Information

Imprint Pagination
7 p.
Report number
SLAC-PUB--4467

Conference

Title
International symposium on the production and decay of heavy flavors.
Dates
1-5 Sep 1987.
Place
Stanford, CA (USA).

INIS

Country of Publication
United States
Country of Input or Organization
United States
INIS RN
19048643
Subject category
S72: PHYSICS OF ELEMENTARY PARTICLES AND FIELDS;
Resource subtype / Literary indicator
Conference, Numerical Data
Descriptors DEI
BRANCHING RATIO; D MESONS; ELECTRON-POSITRON INTERACTIONS; EXPERIMENTAL DATA; LEPTONIC DECAY; LIMITING VALUES; MASS SPECTRA; PARTICLE DECAY
Descriptors DEC
BASIC INTERACTIONS; BOSONS; CHARM PARTICLES; CHARMED MESONS; DATA; DECAY; ELEMENTARY PARTICLES; HADRONS; INFORMATION; INTERACTIONS; LEPTON-LEPTON INTERACTIONS; MESONS; NUMERICAL DATA; PARTICLE INTERACTIONS; PSEUDOSCALAR MESONS; SPECTRA; WEAK INTERACTIONS; WEAK PARTICLE DECAY

Optional Information

Notes
Paper copy only, copy does not permit microfiche production. Original copy available until stock is exhausted.
Secondary number(s)
CONF-8709147--5.