HYPERON EFFECT IN THE HIGH-ENERGY $mu$-MESON SPECTRUM AT SEA LEVEL

Journal Article · Mon Jan 01 04:00:00 EST 1962 · J. Phys. Soc. Japan

OSTI ID:4753942

Babu, P; Pal, Y

Production ratios of strange particles in collisions of 25-Bev protons with light nuclei indicate that in 30% of the collisions the baryon carrying most of the energy may be a hyperon. The fraction of hyperons probably increases with energy in proportion to the multiplicity of the panticles produced, till it reaches a saturation value of about 0.8 at 10/sup 13/ ev. Among other effects, this will lead to the consequence that most of the pi mesons above an energy of a few hundred Bev found in the atmosphere will result from hyperon decay rather than from the pionization'' process. In this paper, the sea level flux and energy spectrum of muons arising via the hyperon process have been calculated. Starting from the known flux and energy spectrum of primary cosmic rays, it is shown that above 10/sup 12/ ev the flux and energy spectrum of muons agrees very well with the absolute flux and the spectrum measured directly in other experiments and as inferred from measurement of high energy gamma -ray spectrum in the atmosphere Below 10/sup 12/ ev the hyperon contribution to the mu -meson flux decreases progressively, as expected, till, at about 100 Bev, it becomes nearly half of the total flux of mu mesons as measured by various investigntors. (auth)

• Research Organization: Tata Inst. of Fundamental Research, Bombay
• NSA Number: NSA-17-013081
• OSTI ID: 4753942
• Journal Information: J. Phys. Soc. Japan, Journal Name: J. Phys. Soc. Japan Vol. Vol: 17: Suppl. A-III
• Country of Publication: Country unknown/Code not available
• Language: English

Related Subjects

ATMOSPHERE
COSMIC RADIATION
DECAY
ELEMENTARY PARTICLES
ENERGY
ENERGY RANGE
GAMMA RADIATION
HYPERONS
INTERACTIONS
MASS
MUONS
NUCLEI
PHYSICS
PIONS
PRODUCTION
PROTONS
SPECTRA
STRANGE PARTICLES