Published December 28, 2011 | Version v1
Journal article Metadata-only

Precision measurement of CP Violation in D0 → π+π−

Creators

  • 1. University of Siena, Via Roma 56, 53100 Siena (Italy)
  • 2. INFN of Pisa, Largo B. Pontecorvo, 56127 Pisa (Italy)

Description

We report a measurement of the CP violating asymmetry in D0 → π+π- decays using approximately 215,000 decays reconstructed in about 5.94 fb-1 of CDF data. We use the strong D*+ → D0π+ decay (D* tag) to identify the flavor of the charmed meson at production time and exploit CP-conserving strong c c-bar pair-production in p p-bar collisions. Higher statistic samples of Cabibbo-favored D0 → K-π+ decays with and without D* tag are used to highly suppress systematic uncertainties due to detector effects. The result is the world's most precise measurement to date and it is fully consistent with no CP violation.

Availability note (English)

Available from http://dx.doi.org/10.1088/1742-6596/335/1/012044

Additional details

Identifiers

DOI
10.1088/1742-6596/335/1/012044;

Publishing Information

Journal Title
Journal of Physics. Conference Series (Online)
Journal Volume
335
Journal Issue
1
Journal Page Range
[8 p.]
ISSN
1742-6596

Conference

Title
Symposium on prospects in the physics of discrete symmetries
Acronym
DISCRETE 2010
Dates
6-11 Dec 2010
Place
Rome (Italy)

INIS

Country of Publication
United Kingdom
Country of Input or Organization
International Atomic Energy Agency (IAEA)
INIS RN
43101560
Subject category
S72: PHYSICS OF ELEMENTARY PARTICLES AND FIELDS;
Resource subtype / Literary indicator
Conference
Descriptors DEI
ACCURACY; ANTIPROTONS; ASYMMETRY; CP INVARIANCE; D NEUTRAL MESONS; D*-2010 MESONS; FERMILAB COLLIDER DETECTOR; FLAVOR MODEL; KAONS MINUS; PAIR PRODUCTION; PIONS MINUS; PIONS PLUS; PROTON-PROTON INTERACTIONS
Descriptors DEC
ANTIBARYONS; ANTIMATTER; ANTINUCLEI; ANTINUCLEONS; ANTIPARTICLES; BARYON-BARYON INTERACTIONS; BARYONS; BOSONS; CHARM PARTICLES; CHARMED MESONS; COMPOSITE MODELS; D MESONS; ELEMENTARY PARTICLES; FERMIONS; HADRON-HADRON INTERACTIONS; HADRONS; INTERACTIONS; INVARIANCE PRINCIPLES; KAONS; MATHEMATICAL MODELS; MATTER; MEASURING INSTRUMENTS; MESONS; NUCLEI; NUCLEON-NUCLEON INTERACTIONS; NUCLEONS; PARTICLE INTERACTIONS; PARTICLE MODELS; PARTICLE PRODUCTION; PIONS; PROTON-NUCLEON INTERACTIONS; PROTONS; PSEUDOSCALAR MESONS; QUARK MODEL; RADIATION DETECTORS; STRANGE MESONS; STRANGE PARTICLES; VECTOR MESONS

Optional Information

Collaborations
CDF Collaboration