# THE INTERACTION AND DECAY OF K$sup -$ MESONS IN PHOTOGRAPHIC EMULSION. PART I. GENERAL CHARACTERISTICS OF K$sup -$-INTERACTIONS AND ANALYSIS OF EVENTS IN WHICH A CHARGED $pi$-MESON IS EMITTED

## Abstract

A total of 3,480 K/sup -/-mesons were observed. Of these, 445 interact in flight, at a mean energy of 40 Mev and only their general characteristics were studied. Little difference was observed between the number of unstable charged particles ( SIGMA plus or minus -hyperons and pi plus or minus -mesons) in these interactions and those in the 3,035 interactions at rest. The 3,035 K/sup - /-interactions at rest were studied in detail. The results on those interactions in which pi -mesons are emitted are given. An estimate of the SIGMA -hyperon nuclear potential is based on the energy spectrum of pi -mesons emitted in the K/ sup -/-interactions in which the only charged particles emitted are a pi meson and a SIGMA -hyperon. A detailed examination of ihe angular distribution of 2- pronged events, and of the sign ratio of the pi -mesons, the prong distribution and energy release in all events led to an estimate of the probabilities of absorption of positive and negative SIGMA hyperons in the parent nucleus, and to a partition of the events between the various primary reactions. (auth)

- Authors:

- Publication Date:

- Research Org.:
- H.H. Wills Physical Lab., Bristol, Eng.

- OSTI Identifier:
- 4197244

- NSA Number:
- NSA-14-000872

- Resource Type:
- Journal Article

- Journal Name:
- Nuovo Cimento (Italy) Divided into Nuovo Cimento A and Nuovo Cimento B

- Additional Journal Information:
- Journal Volume: Vol: (10) 13; Other Information: Orig. Receipt Date: 31-DEC-60

- Country of Publication:
- Country unknown/Code not available

- Language:
- English

- Subject:
- PHYSICS; ABSORPTION; ANGULAR DISTRIBUTION; CHARGED PARTICLES; DECAY; EMISSION; INTERACTIONS; KAONS; KAONS-MINUS; MEASURED VALUES; NUCLEAR EMULSIONS; NUCLEAR REACTIONS; PARTICLE TRACKS; PIONS; SIGMA PARTICLES; SPECTRA

### Citation Formats

```
Bhowmik, B, Evans, D, and Falla, D.
```*THE INTERACTION AND DECAY OF K$sup -$ MESONS IN PHOTOGRAPHIC EMULSION. PART I. GENERAL CHARACTERISTICS OF K$sup -$-INTERACTIONS AND ANALYSIS OF EVENTS IN WHICH A CHARGED $pi$-MESON IS EMITTED*. Country unknown/Code not available: N. p., 1959.
Web.

```
Bhowmik, B, Evans, D, & Falla, D.
```*THE INTERACTION AND DECAY OF K$sup -$ MESONS IN PHOTOGRAPHIC EMULSION. PART I. GENERAL CHARACTERISTICS OF K$sup -$-INTERACTIONS AND ANALYSIS OF EVENTS IN WHICH A CHARGED $pi$-MESON IS EMITTED*. Country unknown/Code not available.

```
Bhowmik, B, Evans, D, and Falla, D. Sun .
"THE INTERACTION AND DECAY OF K$sup -$ MESONS IN PHOTOGRAPHIC EMULSION. PART I. GENERAL CHARACTERISTICS OF K$sup -$-INTERACTIONS AND ANALYSIS OF EVENTS IN WHICH A CHARGED $pi$-MESON IS EMITTED". Country unknown/Code not available.
```

```
@article{osti_4197244,
```

title = {THE INTERACTION AND DECAY OF K$sup -$ MESONS IN PHOTOGRAPHIC EMULSION. PART I. GENERAL CHARACTERISTICS OF K$sup -$-INTERACTIONS AND ANALYSIS OF EVENTS IN WHICH A CHARGED $pi$-MESON IS EMITTED},

author = {Bhowmik, B and Evans, D and Falla, D},

abstractNote = {A total of 3,480 K/sup -/-mesons were observed. Of these, 445 interact in flight, at a mean energy of 40 Mev and only their general characteristics were studied. Little difference was observed between the number of unstable charged particles ( SIGMA plus or minus -hyperons and pi plus or minus -mesons) in these interactions and those in the 3,035 interactions at rest. The 3,035 K/sup - /-interactions at rest were studied in detail. The results on those interactions in which pi -mesons are emitted are given. An estimate of the SIGMA -hyperon nuclear potential is based on the energy spectrum of pi -mesons emitted in the K/ sup -/-interactions in which the only charged particles emitted are a pi meson and a SIGMA -hyperon. A detailed examination of ihe angular distribution of 2- pronged events, and of the sign ratio of the pi -mesons, the prong distribution and energy release in all events led to an estimate of the probabilities of absorption of positive and negative SIGMA hyperons in the parent nucleus, and to a partition of the events between the various primary reactions. (auth)},

doi = {},

journal = {Nuovo Cimento (Italy) Divided into Nuovo Cimento A and Nuovo Cimento B},

number = ,

volume = Vol: (10) 13,

place = {Country unknown/Code not available},

year = {1959},

month = {8}

}