Report on ICHEP06 Moscow, Russian Federation

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Report on ICHEP06 Moscow, Russian Federation
Lee Pondrom, UW Madison, 25 Sept 2006
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Possible new c-cbar states

• Several new resonances have been seen at the B
  factories-daughters of B decays
• One prominent signature is X-gtJ/?????
• The X(3872) has been confirmed at the Tevatron.

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CP violation in the B sector

• This is a busy area, only a few things will be
  discussed

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Kobayashi-Maskawa Phase
l 0.22
CP violation is due to a complex phase in quark
mixing matrix
CP violation parameters (f1, f2, f3) (b, a, g )
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sin2f1 measurement
Vtd
Vtd
A0
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Principle of TCPV measurement
CP-side
m
J/y
m-
?(4S) resonance
B1
electron (8GeV)
KS/L
B0
positron (3.5GeV)
nm
B2
p-
bg 0.425 (Belle) 0.56 (BaBar)
K
p-
Flavor tag and vertex reconstruction
Dz 200mm (Belle)
m

1. Fully reconstruct one B-meson which decays to CP
   eigenstate
2. Tag-side determines its flavor
3. Proper time (Dt) is measured from decay-vertex
   difference (Dz)

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B0?J/y KS , KL
Belle preliminary
Belle preliminary
B0 ? J/y KS
B0 ? J/y KL
0
0
B0 tag
B0 tag
CP odd xCP-1
CP even xCP1
sin2f1 0.643 0.038 A - 0.001 0.028
sin2f1 0.641 0.057 A 0.045 0.033
stat error
stat error
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Constraint on the Unitarity Triangle
_
Time-dependent Dalitz analysisof B0 ? D KSpp-
h0 hep-ex/0605023 submitted to PRL
?

f170o
f120o
Disfavored at 98.3 C.L.
?
(_)
f1 20.0o 1.3o (Belle data only)
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The unitarity triangle a year ago
Already many observable quantities are
over-constraining the unitarity triangle.
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Electroweak Sector

• Here again only a few topics
• Charged currents at HERA
• Top mass
• Single top production

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Cosmic Rays

• Highest energies Auger detector
• Atmospheric neutrinos and Super K

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1 particle/km2/century
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Above Ethr 71019 eV, protons loose rapidly
energy via pion photoproduction. Interaction
length 6 Mpc
Energy loss 20 / interaction
p ? 2.7 K ? N p

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Auger hybrid detector

• Fluorescence Detector (FD)
• Longitudinal development of the shower
• Calorimetric measurement of the energy
• Calibration of the energy scale
• Direction of the shower
• 12 duty cycle !

• Surface Detector (SD)
• Front of shower at ground
• Direction of the shower
• High statistics

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The Auger Observatory
Total area 3000 km2 1600 Surface detectors
(water tanks) 24 fluorescence telescopes 6 in
each of 4 buildings
About ¾ installed and operational Completion in
2007
50 km
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Statistics is now about ½ year of full
Observatory (7000 km2 sr yr) Efficiency 100
above 3 EeV


Systematic error on the energy 25
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Lots more stuff of course

• The end