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Report on ICHEP06 Moscow, Russian Federation. Lee Pondrom, UW Madison, 25 Sept 2006. Possible new c-cbar states. Several new resonances have been seen at the B factories-daughters of B decays One prominent signature is X-> J/ ψ  The X(3872) has been confirmed at the Tevatron.

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Report on ICHEP06 Moscow, Russian Federation

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Report on ichep06 moscow russian federation

Report on ICHEP06 Moscow, Russian Federation

Lee Pondrom, UW Madison, 25 Sept 2006


Possible new c cbar states

Possible new c-cbar states

  • Several new resonances have been seen at the B factories-daughters of B decays

  • One prominent signature is X->J/ψ

  • The X(3872) has been confirmed at the Tevatron.


Cp violation in the b sector

CP violation in the B sector

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


Kobayashi maskawa phase

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 )


Sin2 f 1 measurement

B0

_

fCP

_

_

_

c

q

p

_

J/y

_

d

b

b

B0

c

t

w

B0

B0

_

B0

w

w

t

s

b

d

d

K0

d

_

G(Dt ; B0J/yK0) -G(Dt ; B0J/yK0)

=

_

A

G(Dt ; B0J/yK0) +G(Dt ; B0J/yK0)

CP

= -xcpsin2f1 sin(DmDt) + A cos (DmDt)

Direct CPV (A = -C)

Mixing induced CPV

xCP: CP eigenvalue, +1 (-1) for CP even (odd)

sin2f1 measurement

V*td

V*td

A=0


Principle of tcpv measurement

_

B0

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+

  • Fully reconstruct one B-meson which decays to CP eigenstate

  • Tag-side determines its flavor

  • Proper time (Dt) is measured from decay-vertex difference (Dz)


B 0 j y k s k l

Belle preliminary

Sig

Sig+BG

_

_

B0 tag

B0 tag

Belle preliminary

B0J/y KS , KL

B0 J/y KS

0

B0 J/y KL

0

B0 tag

B0 tag

CP odd : xCP=-1

CP even : xCP=+1

sin2f1= +0.643 ±0.038

A = - 0.001 ±0.028

sin2f1= +0.641 ±0.057

A = +0.045 ±0.033

stat error

stat error


Constraint on the unitarity triangle

Constraint on the Unitarity Triangle

_

Time-dependent Dalitz analysisof B0  D[ KSp+p- ]h0

hep-ex/0605023 submitted to PRL

?

f1=70o

f1=20o

Disfavored at

98.3% C.L.

?

(^_^)

f1= 20.0o± 1.3o

(Belle data only)


The unitarity triangle a year ago

The unitarity triangle: a year ago

Already many observable

quantities are

over-constraining

the unitarity triangle.


Electroweak sector

Electroweak Sector

  • Here again only a few topics

  • Charged currents at HERA

  • Top mass

  • Single top production


Cosmic rays

Cosmic Rays

  • Highest energies – Auger detector

  • Atmospheric neutrinos and Super K


Report on ichep06 moscow russian federation

1 particle/km2/century


Report on ichep06 moscow russian federation

Above Ethr ≈ 7*1019 eV, protons loose rapidly energy via pion photoproduction. Interaction length ≈ 6 Mpc Energy loss ≈ 20 % / interaction

p + γ 2.7 K → N+ π


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 !

Auger hybrid detector

  • Surface Detector (SD)

  • Front of shower at ground

  • Direction of the shower

  • “High” statistics


Report on ichep06 moscow russian federation

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


Report on ichep06 moscow russian federation

Statistics is now about ½ year of full Observatory (~7000 km2 sr yr)

Efficiency =100% above 3 EeV

Systematic error on

the energy ±~ 25%


Lots more stuff of course

Lots more stuff of course

  • The end


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