Observation of D⁺→K⁺η(') and Search for CP Violation in D⁺→π⁺η(') Decays
Journal Article
·
· Physical Review Letters
We report the first observation of the doubly Cabibbo-suppressed decays D⁺→K⁺η(') using a 791 fb⁻¹ data sample collected with the Belle detector at the KEKB asymmetric-energy e⁺e⁻ collider. The ratio of the branching fractions of doubly Cabibbo-suppressed relative to singly Cabibbo-suppressed D⁺→π⁺η(') decays are B(K⁺η)/B(D⁺→π⁺η)=(3.06±0.43±0.14)% and B(K⁺η('))/B(D⁺→π⁺η(')) = (3.77±0.39±0.10)%. From these, we find that the relative final-state phase difference between the tree and annihilation amplitudes in D⁺ decays, δTA, is (72±9)° or (288±9)°. We also report the most precise measurements of CP asymmetries to date: AD⁺CP=(+1.74±1.13±0.19)% and AD⁺→π+η'CP = (-0.12±1.12±0.17)%.
- Sponsoring Organization:
- USDOE
- OSTI ID:
- 1101218
- Journal Information:
- Physical Review Letters, Journal Name: Physical Review Letters Vol. 107 Journal Issue: 22; ISSN 0031-9007
- Publisher:
- American Physical SocietyCopyright Statement
- Country of Publication:
- United States
- Language:
- English
Cited by: 15 works
Citation information provided by
Web of Science
Web of Science
C P -Violation in the Renormalizable Theory of Weak Interaction
|
journal | February 1973 |
Search for Violation in the Decays and
|
journal | May 2010 |
Observation of the Doubly Cabibbo-Suppressed Decay
|
journal | June 2009 |
Search for Violation in the Decays
|
journal | May 2011 |
Charmed meson decays to two pseudoscalars
|
journal | January 2010 |
Review of Particle Physics
|
journal | July 2010 |
New physics and violation in singly Cabibbo suppressed decays
|
journal | February 2007 |
The EvtGen particle decay simulation package
|
journal | April 2001 |
Measurements of meson decays to two pseudoscalar mesons
|
journal | March 2010 |
Measurement of and branching ratios
|
journal | December 2009 |
Overview of the KEKB accelerators
|
journal | February 2003 |
A detailed test of the CsI(Tℓ) calorimeter for BELLE with photon beams of energy between 20 MeV and 5.4 GeV
|
journal | March 2000 |
Two-body hadronic charmed meson decays
|
journal | April 2010 |
Final-state phases in doubly Cabibbo-suppressed charmed meson nonleptonic decays
|
journal | January 2002 |
The Belle detector
|
journal | February 2002 |
Similar Records
Observation of and Search for Violation in Decays
Measurement of branching fractions and search for CP violation in $D^0 → π^+π^-η, D^0 → K^+K^-η$, and $D^0 → Φη$ at Belle
Observation of the Doubly Cabibbo-Suppressed Decay and Evidence for
Journal Article
·
Mon Nov 21 00:00:00 EST 2011
· Physical Review Letters
·
OSTI ID:1101218
+166 more
Measurement of branching fractions and search for CP violation in $D^0 → π^+π^-η, D^0 → K^+K^-η$, and $D^0 → Φη$ at Belle
Journal Article
·
Mon Sep 13 00:00:00 EDT 2021
· Journal of High Energy Physics (Online)
·
OSTI ID:1101218
+186 more
Observation of the Doubly Cabibbo-Suppressed Decay and Evidence for
Journal Article
·
Thu Oct 01 00:00:00 EDT 2020
· Physical Review Letters
·
OSTI ID:1101218
+491 more