Ερευνητικό υλικό ΕΚΠΑ

Observation of muon intensity variations by season with the MINOS far
detector

Αγγλικά

The temperature of the upper atmosphere affects the height of primary
cosmic ray interactions and the production of high-energy cosmic ray
muons which can be detected deep underground. The MINOS far detector at
Soudan, MN, has collected over 67 X 10(6) cosmic ray induced muons. The
underground muon rate measured over a period of five years exhibits a
4% peak-to-peak seasonal variation which is highly correlated with the
temperature in the upper atmosphere. The coefficient, alpha(T), relating
changes in the muon rate to changes in atmospheric temperature was found
to be alpha(T) 0: 873 +/- 0: 009(stat) +/- 0.010(syst). Pions and kaons
in the primary hadronic interactions of cosmic rays in the atmosphere
contribute differently to alpha(T) due to the different masses and
lifetimes. This allows the measured value of alpha(T) to be interpreted
as a measurement of the K/pi ratio for E-p greater than or similar to 7
TeV of 0.12(-0.05)(+0.07), consistent with the expectation from collider
experiments.

10

Adamson, P.
Andreopoulos, C.
Arms, K. E.
Armstrong, R. and
Auty, D. J.
Ayres, D. S.
Backhouse, C.
Barnett, J.
Barr,
G.
Barrett, W. L.
Becker, B. R.
Bishai, M.
Blake, A. and
Bock, B.
Bock, G. J.
Boehnlein, D. J.
Bogert, D.
Bower,
C.
Cavanaugh, S.
Chapman, J. D.
Cherdack, D.
Childress,
S.
Choudhary, B. C.
Cobb, J. H.
Coleman, S. J. and
Cronin-Hennessy, D.
Culling, A. J.
Danko, I. Z.
de Jong, J.
K.
Devenish, N. E.
Diwan, M. V.
Dorman, M.
Escobar, C.
O.
Evans, J. J.
Falk, E.
Feldman, G. J.
Fields, T. H.
and Frohne, M. V.
Gallagher, H. R.
Godley, A.
Goodman, M. C.
and Gouffon, P.
Gran, R.
Grashorn, E. W.
Grzelak, K. and
Habig, A.
Harris, D.
Harris, P. G.
Hartnell, J.
Hatcher,
R.
Heller, K.
Himmel, A.
Holin, A.
Hylen, J.
Irwin,
G. M.
Isvan, Z.
Jaffe, D. E.
James, C.
Jensen, D. and
Kafka, T.
Kasahara, S. M. S.
Koizumi, G.
Kopp, S. and
Kordosky, M.
Korman, K.
Koskinen, D. J.
Krahn, Z. and
Kreymer, A.
Lang, K.
Ling, J.
Litchfield, P. J. and
Loiacono, L.
Lucas, P.
Ma, J.
Mann, W. A.
Marshak, M. L.
and Marshall, J. S.
Mayer, N.
McGowan, A. M.
Mehdiyev, R.
and Meier, J. R.
Messier, M. D.
Metelko, C. J.
Michael, D.
G.
Miller, Kw. H.
Mishra, S. R.
Mitchell, J.
Moore, C.
D.
Morfin, J.
Mualem, L.
Mufson, S.
Musser, J. and
Naples, D.
Nelson, J. K.
Newman, H. B.
Nichol, R. J. and
Nicholls, T. C.
Ochoa-Ricoux, J. P.
Oliver, W. P.
Osiecki,
T.
Ospanov, R.
Osprey, S.
Paley, J.
Patterson, R. B. and
Patzak, T.
Pawloski, G.
Pearce, G. F.
Peterson, E. A. and
Pittam, R.
Plunkett, R. K.
Rahaman, A.
Rameika, R. A. and
Raufer, T. M.
Rebel, B.
Reichenbacher, J.
Rodrigues, P. A.
and Rosenfeld, C.
Rubin, H. A.
Ryabov, V. A.
Sanchez, M. C.
and Saoulidou, N.
Schneps, J.
Schreiner, P.
Shanahan, P. and
Smart, W.
Smith, C.
Sousa, A.
Speakman, B.
Stamoulis, P.
and Strait, M.
Tagg, N.
Talaga, R. L.
Thomas, J. and
Thomson, M. A.
Thron, J. L.
Tinti, G.
Toner, R.
Tsarev,
V. A.
Tzanakos, G.
Urheim, J.
Vahle, P.
Viren, B. and
Watabe, M.
Weber, A.
Webb, R. C.
West, N.
White, C. and
Whitehead, L.
Wojcicki, S. G.
Wright, D. M.
Yang, T. and
Zois, M.
Zhang, K.
Zwaska, R.
MINOS Collaboration

Physical Review D

AMER PHYSICAL SOC

81

1

https://doi.org/10.1103/PhysRevD.81.012001

10.1103/PhysRevD.81.012001

https://pergamos.lib.uoa.gr/uoa/dl/object/3144781