uu.seUppsala University Publications
Change search
ReferencesLink to record
Permanent link

Direct link
Measurement of the direct CP-violating parameter A(CP) in the decay D+ -> K-pi(+)pi(+)
Show others and affiliations
2014 (English)In: Physical Review D, ISSN 1550-7998, Vol. 90, no 11, 111102- p.Article in journal (Refereed) Published
Abstract [en]

We measure the direct CP-violating parameter A(CP) for the decay of the charged charm meson, D+ -> K-pi(+)pi(+)(and charge conjugate), using the full 10.4 fb(-1) sample of p (p) over bar collisions at root s = 1.96 TeV collected by the D0 detector at the Fermilab Tevatron collider. We extract the raw reconstructed charge asymmetry by fitting the invariant mass distributions for the sum and difference of charge-specific samples. This quantity is then corrected for detector-related asymmetries using data-driven methods and for possible physics asymmetries (from B. D processes) using input from Monte Carlo simulation. We measure A(CP) =[-0.16 +/- 0.15(stat) +/- 0.09(syst)] %, which is consistent with zero, as expected from the standard model prediction of CP conservation, and is the most precise measurement of this quantity to date.

Place, publisher, year, edition, pages
2014. Vol. 90, no 11, 111102- p.
National Category
Physical Sciences
URN: urn:nbn:se:uu:diva-241967DOI: 10.1103/PhysRevD.90.111102ISI: 000346377100001OAI: oai:DiVA.org:uu-241967DiVA: diva2:781977
Available from: 2015-01-19 Created: 2015-01-19 Last updated: 2015-01-19Bibliographically approved

Open Access in DiVA

No full text

Other links

Publisher's full text
By organisation
High Energy Physics
In the same journal
Physical Review D
Physical Sciences

Search outside of DiVA

GoogleGoogle Scholar

Altmetric score

Total: 195 hits
ReferencesLink to record
Permanent link

Direct link