(WFRF:(Mustafa H))
Search: (WFRF:(Mustafa H)) > (2015-2019) > Improved measuremen...
- 10 of 90
- Previous record
- Next record
- To hitlist
Improved measurement of the strong-phase difference delta(K pi )(D)in quantum-correlated D(D)over-bar decays
-
- Ablikim, M. (author)
- Inst High Energy Phys, Beijing 100049, Peoples R China
-
- Adlarson, Patrik (author)
- Uppsala universitet,Kärnfysik
-
- Johansson, Tord (author)
- Uppsala universitet,Kärnfysik
- show more...
- show less...
- (creator_code:org_t)
- 2022-11-09
- 2022
- English.
- In: European Physical Journal C. - : Springer Nature. - 1434-6044 .- 1434-6052. ; 82
- Journal article (peer-reviewed)
Abstract
Subject headings
Close
- The decay D -> K-pi(+) is studied in a sample of quantum-correlated D (D) over bar pairs, based on a data set corresponding to an integrated luminosity of 2.93 fb(-1) collected at the psi(3770) resonance by the BESIII experiment. The asym- metry between CP-odd and CP-even eigenstate decays into K-pi(+) is determined to be A(K pi) = 0.132 +/- 0.011 +/- 0.007, where the first uncertainty is statistical and the second is systematic. This measurement is an update of an earlier study exploiting additional tagging modes, including several decay modes involving a K-L(0) meson. The branching fractions of the K-L(0) modes are determined as input to the analysis in a manner that is independent of any strong phase uncertainty. Using the predominantly CP-even tag D -> pi(+)pi(-)pi(0) and the ensemble of CP-odd eigenstate tags, the observable A(K pi)(pi pi pi 0) is measured to be 0.130 +/- 0.012 +/- 0.008. The two asymmetries are sensitive to r(D)(K pi) delta(K)(pi)(D), where r(D)(K pi) and S-D(K pi) are the ratio of amplitudes and phase difference, respectively, between the doubly Cabibbo-suppressed and Cabibbofavoured decays. In addition, events containing D -> K-pi(+) tagged by D -> K-S,L(0) pi(+)pi(-) are studied in bins of phase space of the three-body decays. This analysis has sensitivity to both r(D)(K pi) cos delta(K)(pi)(D) and r(D)(K pi) sin delta(K)(pi)(D). A fit to A(K pi), A(K pi)(pi pi pi 0) and the phase-space distribution of the D -> K-S,L(0) pi(+)pi(-) tags yields delta(K)(pi)(D) = (187.6(-9.7-6.4)(+8.9+5.4))degrees , where external con- straints are applied for r(D)(K pi) and other relevant parameters. This is the most precise measurement of delta(K)(pi)(D) in quantumcorrelated D (D) over bar decays.
Subject headings
- NATURVETENSKAP -- Fysik -- Subatomär fysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Subatomic Physics (hsv//eng)
Publication and Content Type
- ref (subject category)
- art (subject category)
Find in a library
- European Physical Journal C (Search for host publication in LIBRIS)
To the university's database
- 10 of 90
- Previous record
- Next record
- To hitlist
Find more in SwePub
- By the author/editor
- Ablikim, M.
- Adlarson, Patrik
- Johansson, Tord
- Kupsc, Andrzej
- Pettersson, Joac ...
- Schönning, Karin ...
- show more...
- Thorén, Viktor
- Wolke, Magnus
- Zou, J. H.
- show less...
- About the subject
-
- NATURAL SCIENCES
- NATURAL SCIENCES
- and Physical Science ...
- and Subatomic Physic ...
- Articles in the publication
- European Physica ...
- By the university
- Uppsala University
Search outside SwePub
- Extend your search to:
- Google Book Search
- Google Scholar
Kungliga biblioteket hanterar dina personuppgifter i enlighet med EU:s dataskyddsförordning (2018), GDPR. Läs mer om hur det funkar här.
Så här hanterar KB dina uppgifter vid användning av denna tjänst.
- Copyright © LIBRIS - National Library Systems
- LIBRIS.kb.se
