[Todos] SEMINARIO IFLP/DEPARTAMENTO DE FÍSICA

[tierno]

ESTIMADOS: 

AGRADECEMOS LA DIFUSIÓN DEL ANUNCIO DEL PRÓXIMO SEMINARIO DEL CICLO DE
COLOQUIOS Y SEMINARIOS QUE SE ORGANIZAN EN EL INSTITUTO DE FÍSICA LA
PLATA/ DEPARTAMENTO DE FÍSICA. 

SE ADJUNTA MATERIAL PARA DIFUNDIR EN CARTELERAS. 

SALUDOS, 

ADMINISTRACIÓN IFLP 

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SEMINARIOS  DEL IFLP Y DEL DEPARTAMENTO 

JUEVES 31 DE MARZO – 15 HS 

AULA CHICA 

TÍTULO: "ENTROPY AND COSMIC RAYS: THE ORIGIN OF THE BROKEN POWER LAW
SPECTRUM AND RULING OUT LARGE EXTRA DIMENSIONS BEYOND LHC ENERGIES" 

EXPONE: JOHN SWAIN. NORTHEASTERN UNIVERSITY, BOSTON USA

 

RESUMEN:

 A LONG-STANDING PUZZLE IN COSMIC RAY PHYSICS HAS BEEN THE NATURE OF THE
SPECTRUM, 

WHICH IS VERY WELL MODELED BY A BROKEN POWER LAW 

WITH DIFFERING EXPONENTS, BOTH CLOSE TO -3, ABOVE AND BELOW THE "KNEE". 

WE SHOW THAT A RATHER SIMPLE HADRONIC EVAPORATION MODEL REPRODUCES 

THE CORRECT EXPONENTS, AND THE LOCATION OF THE KNEE WITHOUT ANY FREE 

PARAMETERS. THE MODEL IS PREDICTIVE, WITH SOME SUCCESSFUL PREDICTIONS 

ALREADY AND HAS BROADER IMPLICATIONS FOR NUCLEAR PHYSICS AND PARTICLE 

ASTROPHYSICS. SIMILAR REASONING IS ALSO APPLIED TO RULE OUT LARGE EXTRA 

DIMENSIONS BEYOND LHC ENERGIES USING UHECR DATA. 

  

  
 
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