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BEGIN:VEVENT
DTSTAMP:20261021T123148Z
LAST-MODIFIED:20121116T203436Z
DTSTART:20090211T203000Z
DTEND:20090211T213000Z
UID:event389@bu.edu
URL:http://physics.bu.edu/internal/events/show/389
SUMMARY:CP violation in hadronic penguins at BABAR
DESCRIPTION:Featuring Jim Hirschauer\, University of Colorado\n\nPart of th
	e HEE Seminar Series.\n\nAbstract: Measurements of time-dependent CP asymme
	tries in B0 meson decays through b —> ccbar s amplitudes have provide
	d crucial tests of the mechanism of CP violation in the Standard Model (SM)
	. These amplitudes contain the leading b-quark couplings\, given by the Cab
	ibbo-Kobayashi-Maskawa (CKM) flavor mixing matrix\, for kinematically allow
	ed transitions. Decays to charmless final states such as eta'K0\, phiK0\, p
	i0K0$\, and omegaK0 are CKM-suppressed b —> qqbar s (q=u\,d\,s) proce
	sses dominated by a single loop (penguin) amplitude. This amplitude has the
	 same weak phase of the CKM mixing matrix as that measured in the b —
	> ccbar s transition\, but is sensitive to the possible presence of new hea
	vy particles in the loop. We describe the measurement of time-dependent CP-
	violation parameters in the decays B0 —> eta'K0S and B0 —> eta'
	K0L. This measurement is based on the full BABAR dataset of 467 million BBb
	ar pairs produced at the PEP-II asymmetric-energy $e^+e^-$ collider at the 
	Stanford Linear Accelerator Center. For the discussion of consistency of me
	asurements in b —> ccbar s and b —> qqbar s penguin decays\, we
	 also report recent BABAR measurements from other penguin modes: B0 —
	> phi K0S\, pi0K0S\, and omega K0S.
LOCATION:PRB 595\, 3 Cummington Mall\, 02215
STATUS:CONFIRMED
CLASS:PUBLIC
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