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Physics of fundamental Symmetries and Interactions - PSI2010

10–14 Oct 2010
PSI
Europe/Zurich timezone

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Session

Session Mo - 2

1 - 2
11 Oct 2010, 11:00
Main Auditorium (WHGA/001) (PSI)

Main Auditorium (WHGA/001)

PSI

CH-5232 Villigen PSI

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  1. 133. Particle Physics Experiments with Slow Neutrons
    Torsten Soldner (ILL)
    11/10/2010, 11:00
    Oral
    Experiments with slow neutrons allow to test the Standard Model of particle physics and theories of gravitation. I will review recent experiments, in particular neutron decay studies, and compare cold and ultracold neutrons.
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  2. 47. UCN magnetic trapping and neutron lifetime measurements.
    Dr Victor Ezhov (Petersburg Nuclear Physics Institute RAS)
    11/10/2010, 11:30
    Fundamental physics with cold and ultracold neutrons
    Oral
    Precision measurements of the neutron lifetime provide stringent tests of the standard electroweak model as well as crucial inputs for tests of Big-Bang nucleosynthesis. The present world average of the neutron lifetime is dominated by results obtained using material bottles for UCNs. This average does not include a recent measurement performed at ILL which produced a value that is 6.5...
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  3. 10. PENELOPE, ON THE WAY TOWARDS A NEW PRECISE NEUTRON LIFETIME MEASUREMENT
    Dr Ruediger Picker (TU Muenchen Physik Department E18)
    11/10/2010, 11:50
    Precision measurements of fundamental constants
    Oral
    A precise knowledge of neutron lifetime opens the way to determine the coupling constants of weak interaction precisely and hence the element Vud of the Cabibbo-Kobayashi-Maskawa matrix. Hence, measurements of the lifetime provide direct tests of the standard model of particle physics. Moreover, the neutron lifetime is important for astrophysical models, especially Big Bang nucleosynthesis....
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  4. 34. The neutron lifetime from a new evaluation of UCN storage experiments
    Mr Alexey Fomin (Petersburg Nuclear Physics Institute)
    11/10/2010, 12:10
    Low energy precision tests of the Standard Model
    Oral
    The analysis of the data on measurements of the neutron lifetime is presented. A new most accurate result of the measurement of neutron lifetime [Phys. Lett. B 605, 72 (2005)] 878.5 ± 0.8 s differs from the world average value [Phys. Lett. B 667, 1 (2008)] 885.7 ± 0.8 s by 6.5 standard deviations. In this connection the analysis and Monte Carlo simulation of experiments [Phys. Lett. B 483, 15...
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  5. 90. COMMERCIAL WATER HOSES TO TRANSPORT ULTRACOLD AND VERY COLD NEUTRONS* AND THEIR APPLICATION IN A RECENT NEUTRON LIFETIME EXPERIMENT
    Dr Peter Geltenbort (Institut Laue-Langevin)
    11/10/2010, 12:30
    Fundamental physics with cold and ultracold neutrons
    Oral
    Commercial water hoses with 6 to 8 mm inner diameter (flexible tubes made of a polyvinyl chloride plastic up to 3 m length) transmit surprisingly well ultracold and very cold neutrons. When covered with a thin layer of a liquid fluorine polymer a transmission probability of up to 85% per meter has been measured. Those flexible tubes may be used to make portable sources of ultracold and thermal...
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