High energy cosmic ray physics with underground muons in MACRO .2. Primary spectra and composition
- Ambrosio M
- Antolini R
- Auriemma G
- Baker R
- Baldini A
- Barbarino GC
- Barish BC
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- Calicchio M
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- Carboni M
- Castellano M
- Cecchini S
- Cei F
- Chiarella V
- Corona A
- Coutu S
- DeCataldo G
- Dekhissi H
- DeMarzo C
- DeMitri I
- DeVincenzi M
- DiCredico A
- Erriquez O
- Fantini R
- Favuzzi C
- Forti C
- Fusco P
- Giacomelli G
- Giannini G
- Giglietto N
- Goretti M
- Grassi M
- Grillo A
- Guarino F
- Guarnaccia P
- Gustavino C
- Habig A
- Hanson K
- Hawthorne A
- Heinz R
- Hong JT
- Iarocci E
- Katsavounidis E
- Kearns E
- Kyriazopoulou S
- Lamanna E
- Lane C
- Levin DS
- Lipari P
- Longley NP
- Longo MJ
- Mancarella G
- Mandrioli G
- MargiottaNeri A
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- Martello D
- MarzariChiesa A
- Mazziotta MN
- Michael DG
- Mikheyev S
- Miller L
- Monacelli P
- Montaruli T
- Monteno M
- Mufson S
- Musser J
- Nicolo D
- Nolty R
- Okada C
- Orth C
- Osteria G
- Palamara O
- Parlati S
- Patera V
- Patrizii L
- Pazzi R
- Peck CW
- Petrera S
- Pistilli P
- Popa V
- Raino A
- Reynoldson J
- Ricciardi M
- Ronga F
- Rubizzo U
- Sanzgiri A
- Sartogo F
- Satriano C
- Satta L
- Scapparone E
- Scholberg K
- Sciubba A
- SerraLugaresi P
- Severi M
- Sitta R
- Spinelli P
- Spinetti M
- Spurio M
- Steinberg R
- Stone JL
- Sulak LR
- Surdo A
- Tarle G
- Togo V
- Valente V
- Walter CW
- Webb R.
- BUSSINO, Severino Angelo Maria
DOIAbstract
Multimuon data from the MACRO experiment at Gran Sasso have been analyzed using a new method, which allows one to estimate the primary cosmic ray fluxes. The estimated all-particle spectrum is higher and flatter than the one obtained from direct measurements but is consistent with EAS array measurements. The spectral indexes of the fitted energy spectrum are 2.56 +/- 0.05 for E 5000 TeV with a gradual change at intermediate energies. The average mass number shows little dependence on the primary energy below 1000 TeV, with a value of 10.1 +/- 2.5 at 100 TeV. At higher energies the best fit average mass shows a mild increase with energy, even though no definite conclusion can be reached taking into account errors. The fitted spectra cover a...
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