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

Autoria(s): ADAMSON, P.; ANDREOPOULOS, C.; ARMS, K. E.; ARMSTRONG, R.; AUTY, D. J.; AYRES, D. S.; BACKHOUSE, C.; BARNETT, J.; BARR, G.; BARRETT, W. L.; BECKER, B. R.; BISHAI, M.; BLAKE, A.; 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.; CRONIN-HENNESSY, D.; CULLING, A. J.; DANKO, I. Z.; JONG, J. K. de; DEVENISH, N. E.; DIWAN, M. V.; DORMAN, M.; ESCOBAR, C. O.; EVANS, J. J.; FALK, E.; FELDMAN, G. J.; FIELDS, T. H.; FROHNE, M. V.; GALLAGHER, H. R.; GODLEY, A.; GOODMAN, M. C.; Gouffon, Philippe; GRAN, R.; GRASHORN, E. W.; GRZELAK, K.; 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.; KAFKA, T.; KASAHARA, S. M. S.; KOIZUMI, G.; KOPP, S.; KORDOSKY, M.; KORMAN, K.; KOSKINEN, D. J.; KRAHN, Z.; KREYMER, A.; LANG, K.; LING, J.; LITCHFIELD, P. J.; LOIACONO, L.; LUCAS, P.; MA, J.; MANN, W. A.; MARSHAK, M. L.; MARSHALL, J. S.; MAYER, N.; MCGOWAN, A. M.; MEHDIYEV, R.; 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.; NAPLES, D.; NELSON, J. K.; NEWMAN, H. B.; NICHOL, R. J.; NICHOLLS, T. C.; OCHOA-RICOUX, J. P.; OLIVER, W. P.; OSIECKI, T.; OSPANOV, R.; OSPREY, S.; PALEY, J.; PATTERSON, R. B.; PATZAK, T.; PAWLOSKI, G.; PEARCE, G. F.; PETERSON, E. A.; PITTAM, R.; PLUNKETT, R. K.; RAHAMAN, A.; RAMEIKA, R. A.; RAUFER, T. M.; REBEL, B.; REICHENBACHER, J.; RODRIGUES, P. A.; ROSENFELD, C.; RUBIN, H. A.; RYABOV, V. A.; SANCHEZ, M. C.; SAOULIDOU, N.; SCHNEPS, J.; SCHREINER, P.; SHANAHAN, P.; SMART, W.; SMITH, C.; SOUSA, A.; SPEAKMAN, B.; STAMOULIS, P.; STRAIT, M.; TAGG, N.; TALAGA, R. L.; THOMAS, J.; THOMSON, M. A.; THRON, J. L.; TINTI, G.; TONER, R.; TSAREV, V. A.; TZANAKOS, G.; URHEIM, J.; VAHLE, P.; VIREN, B.; WATABE, M.; WEBER, A.; WEBB, R. C.; WEST, N.; WHITE, C.; WHITEHEAD, L.; WOJCICKI, S. G.; WRIGHT, D. M.; YANG, T.; ZOIS, M.; ZHANG, K.; ZWASKA, R.
Contribuinte(s)

UNIVERSIDADE DE SÃO PAULO
Data(s)

18/04/2012

18/04/2012

2010
Resumo

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.
Identificador

PHYSICAL REVIEW D, v.81, n.1, 2010

1550-7998

http://producao.usp.br/handle/BDPI/16013

10.1103/PhysRevD.81.012001

http://dx.doi.org/10.1103/PhysRevD.81.012001
Idioma(s)

eng
Publicador

AMER PHYSICAL SOC
Relação

Physical Review D
Direitos

restrictedAccess

Copyright AMER PHYSICAL SOC
Palavras-Chave #COLLISIONS #MACRO #Astronomy & Astrophysics #Physics, Particles & Fields
Tipo

article

original article

publishedVersion
Acesso ao item digital