Charm system tests of CPT and Lorentz invariance with FOCUS

Link, J. M.; Reyes, M.; Yager, P. M.; Anjos, J. C.; Bediaga, I.; Göbel, C.; Magnin, J.; Massafferri, A.; Miranda, J. M. De; Pepe, I. M.; Reis, A. C. dos; Carrillo, S.; Casimiro, E.; Cuautle, E.; Sánchez-Hernández, A.; Uribe, C.; Vázquez, F.; Agostino, L.; Cinquini, L.; Cumalat, J. P.; O’Reilly, B.; Vargas, J. E. Ramirez; Segoni, I.; Wahl, Michael; Butler, J. N.; Cheung, H. W. K.; Chiodini, G.; Gaines, I.; Garbincius, P. H.; Garren, L.; Gottschalk, E.; Kasper, P.; Kreymer, A.; Kutschke, R.; Benussi, L.; Bianco, S.; Fabbri, F. L.; Zallo, A.; Cawlfield, C.; Kim, D. Y.; Park, K. S.; Rahimi, A. M.; Wiss, J.; Gardner, R.; Kryemadhi, A.; Chang, Kang‐Tsung; Chung, Y. S.; Kang, J. S.; Ko, B. R.; Kwak, J. W.; Lee, K. B.; Cho, K.; Park, H.; Alimonti, G.; Barberis, S.; Boschini, M.; Cerutti, Agustín Cobos; D’Angelo, P.; DiCorato, M.; Dini, P.; Edera, L.; Erba, S.; Giammarchi, M.; Inzani, P.; Leveraro, F.; Malvezzi, S.; Menasce, D.; Mezzadri, M.; Moroni, L.; Pedrini, D.; Pontoglio, C.; Prelz, F.; Rovere, M.; Sala, S.; Davenport, T. F.; Arena, Vincenzo; Boca, G.; Bonomi, G.; Gianini, G.; Liguori, G.; Merlo, M. M.; Pantea, D.; Pegna, D. Lopes; Ratti, S. P.; Riccardi, C.; Vitulo, P.; Hernandez, H.; López, A.; Luiggi, E.; Méndez, H.; Paris, A.; Quinones, J.; Xiong, W.; Zhang, Y.; Wilson, J. R.; Handler, T.; Mitchell, R. E.; Engh, D.; Hosack, M.; Johns, W.; Nehring, M.; Sheldon, P.; Stenson, K.; Vaandering, Eric Wayne; Webster, M.; Sheaff, M.

doi:10.1016/s0370-2693(03)00103-5

Cited by 104 publications

(40 citation statements)

References 22 publications

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“…The scale required to generate a neutrino-oscillation signal at the LSND energies E ' 10 ÿ2 GeV was found to be of order 10 ÿ19 GeV for a L e and c L e E. This result is compatible with the dimensionless ratio ' 10 ÿ17 of electroweak to Planck scales that might be expected to control suppression of Planck-scale physics. The sensitivity achieved is comparable to other searches for Lorentz and CPT violation using interferometric techniques in high-energy physics involving K oscillations [23], D oscillations [24], and B d oscillations [25][26][27][28], including ones with sidereal variations [29]. More generally, the SME sensitivities attainable with various types of neutrino searches can be comparable [18] to those achieved in the numerous experiments in astrophysics, atomic physics, optical physics, nuclear physics, and particle physics [1,2].…”

Section: Introductionsupporting

confidence: 50%

Global three-parameter model for neutrino oscillations using Lorentz violation

2006

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A model of neutrino oscillations is presented that has only 3 degrees of freedom and appears compatible with existing data. The model is a subset of the renormalizable sector of the Standard-Model Extension (SME), and it offers a candidate alternative to the standard three-neutrino massive model. All classes of neutrino data are described, including solar, reactor, atmospheric, and LSND oscillations. The disappearance of solar neutrinos is obtained without matter-enhanced oscillations. Quantitative predictions are offered for the ongoing MiniBooNE experiment and for the future experiments OscSNS, NOvA, and T2K.

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Section: Introductionsupporting

confidence: 50%

Global three-parameter model for neutrino oscillations using Lorentz violation

2006

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“…These results can be compared to similar ones obtained in the B and D meson systems [16,17], where an accuracy on the Δa B,D μ parameters of O(10 −13 GeV) has been reached.…”

Section: Cpt and Lorentz Symmetry Test Using Entangled Neutral Kaonssupporting

confidence: 66%

Kaon Physics at KLOE/KLOE-2: recent results

Domenico

2014

EPJ Web of Conferences

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Abstract. The results of the most recent analyses using kaon data collected by the KLOE experiment at the Frascati φ-factory, DAΦNE, are presented: a new improved measurement of BR(K + → π + π − π + (γ)), a new improved search of the rare CP violating decay K S → 3π 0 , and new stringent limits on the CPT violating parameters Δa μ for neutral kaons in the context of the Standard Model Extension framework.

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“…In this Letter we place limits on ∆a ⊥ and ∆a T − C α S χ β D0 z ∆a Z . Past experiments and analyses have placed constraints on the flavor-dependent ∆a µ in other neutral meson oscillating systems: [10], and B 0 -B 0 [11], as well as indirect limits for B 0 s -B 0 s [5]. This article presents a search for CPT and Lorentz violation using the decay B 0 s → µ + D − s X, where D − s → φπ − and φ → K + K − (charge conjugate states are assumed in this article).…”

mentioning

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Search for Violation ofCPTand Lorentz Invariance inBs0Meson Oscillations

Abazov¹,

Abbott²,

Acharya³

et al. 2015

Phys. Rev. Lett.

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We present the first search for CPT-violating effects in the mixing of B 0 s mesons using the full Run II data set with an integrated luminosity of 10.4 fb −1 of proton-antiproton collisions collected using the D0 detector at the Fermilab Tevatron Collider. We measure the CPT-violating asymmetry in the decay B 0 s → µ ± D ± s as a function of celestial direction and sidereal phase. We find no evidence for CPT-violating effects and place limits on the direction and magnitude of flavor-dependent CPTand Lorentz-invariance violating coupling coefficients. We find 95% confidence intervals of ∆a ⊥ < 1.2 × 10 −12 GeV and (−0.8 < ∆aT − 0.396∆aZ < 3.9) × 10 −13 GeV.PACS numbers: 11.30. Cp, 13.20.He, 14.40.Nd Lorentz invariance requires that the description of a particle is independent of its direction of motion or boost velocity. The Standard Model Extension (SME) [1] provides a framework for potential Lorentz and CPT invariance violation (CPTV), suggesting that such violations can occur at the Planck scale but still result in potentially observable effects at currently available collider energies. The process of neutral meson oscillations is described by a 2 × 2 effective Hamiltonian with mass eigenvalues of the propagating particles having very small differences between them that drive the oscillation probability. For the B 0 s -B 0 s system, the fractional difference between the eigenvalues is of the order of 10 −12 . Due to this, B 0 s -B 0 s oscillations form an interferometric system that is very sensitive to small couplings between the valence quarks and a possible Lorentz-invariance violating field, making it an ideal place to search for new physics [2]. The measurement of the like-sign dimuon asymmetry by the D0 Collaboration [3] shows evidence of anomalously large CP-violating effects. This is currently one of the few significant deviations from the standard model of particle physics. One of the interpretations of this effect could be a CPT-invariant CP violation (CPV) in neutral B-meson mixing. The propagating "light" (L) and "heavy" (H) mass eigenvalues of the B 0 s -B 0 s system can be written as [4]:If the complex parameter ξ s is zero, CPT is conserved and CPV is due to |q/p| = 1 so that the oscillation probability). An alternative interpretation is that the asymmetry could arise from T-invariant CPV in B 0 s -B 0 s mixing [5] where |q/p| = 1, but ξ s is non-zero so that the probability of non-oscillation or oscillation back to the original state where ∆a µ is a four vector direction and magnitude in space-time characterizing Lorentz-invariance violation which in the SME is given by ∆a µ = r s a s µ −r b a b µ where a q µ are Lorentz-violating coupling constants for the two valence quarks in the B 0 s meson, and where the factors r q allow for quark-binding or other normalization effects. The four-velocity of the B 0 s meson is given by β µ = γ(1, β), β µ ∆a µ is the difference between the diagonal elements of the effective Hamiltonian, and the mass and decay rate differences of the mass eigenstates are...

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Charm system tests of CPT and Lorentz invariance with FOCUS

Cited by 104 publications

References 22 publications

Global three-parameter model for neutrino oscillations using Lorentz violation

Global three-parameter model for neutrino oscillations using Lorentz violation

Kaon Physics at KLOE/KLOE-2: recent results

Search for Violation ofCPTand Lorentz Invariance inBs0Meson Oscillations

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