Search for Time-Dependent CPT Violation in Hadronic and Semileptonic B Decays

Abstract

We report a new sensitive search for CPT violation, which includes improved measurements of the CPT-violating parameter z and the total decay-width difference normalized to the averaged width DeltaGamma_d/Gamma_d of the two Bd mass eigenstates. The results are based on a data sample of 535 x 10^6 BBbar pairs collected at the Upsilon(4S) resonance with the Belle detector at the KEKB asymmetric-energy e^+e^- collider. We obtain Re(z) = [+1.9 +/- 3.7 (stat) +/- 3.3 (syst)] x 10^{-2}, Im(z) = [-5.7 +/- 3.3 (stat) +/- 3.3 (syst)] x 10^{-3}, and DeltaGamma_d/Gamma_d = [-1.7 +/- 1.8 (stat) +/- 1.1 (syst)] x 10^{-2}, all of which are consistent with zero. This is the most precise single measurement of these parameters in the neutral B-meson system to date.

arXiv comment7 pages, 3 figures, 2 tables, LaTeX; addition of supplemental information, corrections of typos, results unchanged

References in corpus (19)

• Gravity, Lorentz Violation, and the Standard Model
• CP Violation and the CKM Matrix: Assessing the Impact of the Asymmetric B Factories
• CPT Violation Implies Violation of Lorentz Invariance
• Precise Measurements of Direct CP Violation, CPT Symmetry, and Other Parameters in the Neutral Kaon System
• Impact of tag-side interference on time-dependent CP asymmetry measurements using coherent B0 B0bar pairs
• Observation of Time-Dependent CP Violation in B0 -> eta' K0 Decays and Improved Measurements of CP Asymmetries in B0 -> phiK0, KsKsKs and B0 -> J/psi K0 Decays
• Neutral B Flavor Tagging for the Measurement of Mixing-induced CP Violation at Belle
• Improved Measurement of CP-Violation Parameters sin(2phi1) and |lambda|, B Meson Lifetimes, and B0-B0bar Mixing Parameter Delta m_d
• Search for T, CP and CPT Violation in B0-B0bar Mixing with Inclusive Dilepton Events
• Proper-time Resolution Function for Measurement of Time Evolution of B Mesons at the KEK B-Factory
• Limits on the Decay-Rate Difference of Neutral-B Mesons and on CP, T, and CPT Violation in B0-antiB0 Oscillations
• Measurement of Time-Dependent CP-Violating Asymmetries and Constraints on sin(2 beta+gamma) with Partial Reconstruction of B->D*-+pi+- Decays
• Studies of B0-B0bar Mixing Properties with Inclusive Dilepton Events
• Limits on the Decay-Rate Difference of Neutral B Mesons and on CP, T, and CPT Violation in B0-B0bar Oscillations
• Measurement of time-dependent CP asymmetries in B0->D(*)+-pi-+ and B0->D+-rho-+ decays
• Measurements of CP Violation in $B^0\to D^{\ast -}{\pi }^{+}$ and $B^0\to D^{-}{\pi }^{+}$ Decays
• Determination of CP and CPT violation parameters in the neutral kaon system using the Bell-Steinberger relation and data from the KLOE experiment
• Measurements of time-dependent CP asymmetries in $B\to D^{\ast \mp }{\pi }^{\pm }$ decays using a partial reconstruction technique
• Extraction of a Weak Phase from $B\to D^{(\ast )}\pi$

Cited by in corpus (25)

• Averages of $b$-hadron, $c$-hadron, and $\tau$-lepton properties as of summer 2016
• Averages of $b$-hadron, $c$-hadron, and $\tau$-lepton properties as of 2018
• Averages of $b$-hadron, $c$-hadron, and $\tau$-lepton properties as of 2021
• STCF Conceptual Design Report: Volume 1 -- Physics & Detector
• $B_{(s)}^0$-mixing matrix elements from lattice QCD for the Standard Model and beyond
• Measurements of the $B^{+}$, $B^0$, $B_s^0$ meson and ${\Lambda }_b^0$ baryon lifetimes
• Theoretical update of $B$-Mixing and Lifetimes
• Status and prospects for $CPT$ and Lorentz invariance violation searches in neutral meson mixing
• Measurement of the relative width difference of the $B^0$-${\bar{B}}^0$ system with the ATLAS detector
• Measurement of the mass difference between top and anti-top quarks in pp collisions at sqrt(s) = 7 TeV using the ATLAS detector
• CPT violation and triple-product correlations in B decays
• Using time-dependent indirect $CP$ asymmetries to measure $T$ and $CPT$ violation in $B^0$-${\bar{B}}^0$ mixing
• T Violation and CPT Tests in Neutral-Meson Systems
• $B_s\to D_{s}K$ as a Probe of CPT Violation
• Behaviour of observables for neutral meson decaying to two vectors in the presence of $T$, $CP$ and $CPT$ violation in mixing only
• The effect of z^prime boson on same-sign dimuon charge asymmetry in $b_q^0-bar{b}_q^0$ system
• Experimental prospects for C, P, T, CP, and CPT tests
• Experimental Status of the CKM Matrix
• Dealing with T and CPT violations in mixing as well as direct and indirect CP violations for neutral mesons decaying to two vectors
• Trapping Penguins with Entangled B Mesons
• Observability of`Cascade Mixing' in B0 --> J/psi K0
• A $b$-baryon sonata
• New constraints on CPT symmetry violation in charm mesons
• Experimental summary: step-by-step towards new physics
• Refined Applications of the "Collapse of the Wavefunction"