Negative pion and muon fluxes in atmospheric cascades at a depth of 5 g cm(-2)

被引：7

作者：

Brunetti, MT

Codino, A

Grimani, C

Menichelli, M

Miozza, M

Salvatori, I

Golden, RL

Kimbell, BL

Stephens, SA

Stochaj, SJ

Webber, WR

Brancaccio, FM

Papini, P

Piccardi, S

Spillantini, P

Basini, G

Bongiorno, F

Ricci, M

Ormes, JF

Streitmatter, RE

DePascale, MP

Morselli, A

Picozza, P

机构：

[1] UNIV PERUGIA,IST NAZL FIS NUCL,I-06100 PERUGIA,ITALY

[2] NEW MEXICO STATE UNIV,LAS CRUCES,NM 88003

[3] TATA INST FUNDAMENTAL RES,BOMBAY 400005,MAHARASHTRA,INDIA

[4] UNIV FLORENCE,DIPARTIMENTO FIS,FLORENCE,ITALY

[5] UNIV FLORENCE,IST NAZL FIS NUCL,FLORENCE,ITALY

[6] IST NAZL FIS NUCL,LAB NAZL FRASCATI,I-00044 FRASCATI,ROME,ITALY

[7] NASA,GODDARD SPACE FLIGHT CTR,GREENBELT,MD 20771

[8] UNIV ROMA TOR VERGATA,DIPARTIMENTO FIS,I-00173 ROME,ITALY

[9] UNIV ROMA TOR VERGATA,IST NAZL FIS NUCL,ROME,ITALY

来源：

JOURNAL OF PHYSICS G-NUCLEAR AND PARTICLE PHYSICS | 1996年 / 22卷 / 01期

关键词：

D O I：

10.1088/0954-3899/22/1/014

中图分类号：

O57 [原子核物理学、高能物理学];

学科分类号：

070202 ;

摘要：

This paper reports observations of the absolute momentum differential fluxes of negative pions and muons between 4 and 15 GeV/c and between 0.3 and 15 GeV/c, respectively, at an atmospheric depth of 5 g cm(-2). The data have been collected by the balloon-borne experiment MASS (matter-antimatter space spectrometer) launched from Prince Albert (Canada) where the geomagnetic cut-off is 650 MV/c. The instrument was flown on the 5th of September 1989, the duration of the flight was 5.5 hours at an altitude of more than 117000 ft. The measured fluxes are compared to calculations. The muon spectrum follows a power law in momentum with a spectral index of 2.36 above 2 GeV/c.

引用

页码：145 / 153

页数：9

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