Search ForT,CP, andCPTViolation inB0

Abstract

We report the results of a search for T, CP, CPT, and violation in B0-B0 mixing using an inclusive dilepton sample collected by the BABAR experiment at the PEP-II factory. Using a sample of 232 x 10(6) BB pairs, we measure the T and CP violation parameter |q/p| - 1 = (-0.8 +/- 2.7(stat) +/- 1.9(syst) x 10(-3), and the CPT and CP parameters Imz = (13.9 +/- 7.3(stat) +/- 3.2(syst)) x 10(-3) and Delta Gamma x Rez = (7.1 +/- 3.9(stat) +/- 2.0(stat)) x 10(-3) ps(-1). The statistical correlation between the measurements of Imz and Delta Gamma x Rez is 76%.

Search forCPViolation inB0-B¯0Mixing Using Partial Reconst

“…D ÃÀ X' þ reconstruction and kaon tagging, we find Á CP ¼ ð0:29 AE 0:84 þ1:88 À1:61 Þ Â 10 À3 and A CP ¼ ð0:06 AE 0:17 þ0:38 À0:32 Þ%. These results are consistent with, and more precise than, dilepton-based results from B factories [4]. No deviation is observed from the SM expectation [3].…”

“…Experiments measure A CP from the dilepton asymmetry, A '' ¼½Nð' þ ' þ ÞÀNð' À ' À Þ=½Nð' þ ' þ ÞþNð' À ' À Þ, where an ' þ (' À ) tags a B 0 ( " B 0 ) meson, and ' refers to either an electron or a muon [4]. These measurements benefit from the large number of produced dilepton events.…”

Averages of b-hadron, c-hadron, and $$\tau $$ τ -lepton properties as of summer 2016

“…has been measured, either in decay-time-integrated analyses at CLEO [187,223], BaBar [224], CDF [225] and D0 [195], or in decay-time-dependent analyses at OPAL [168], ALEPH [226], BaBar [188,227,228] and Belle [229]. Note that the asymmetry of time-dependent decay rates in Eq.…”

Lorentz andCPTviolation in scalar-mediated potentials

“…Recent searches for Lorentz violation have included studies of matter-antimatter asymmetries for trapped charged particles [14][15][16] and bound state systems [17,18], measurements of muon properties [19,20], analyses of the behavior of spin-polarized matter [21], frequency standard comparisons [22][23][24][25], Michelson-Morley experiments with cryogenic resonators [26][27][28][29][30], Doppler effect measurements [31,32], measurements of neutral meson oscillations [33][34][35][36][37][38], polarization measurements on the light from cosmological sources [39][40][41][42], high-energy astrophysical tests [43][44][45][46][47], precision tests of gravity [48,49], and others. The results of these experiments set constraints on the various SME coefficients, and up-to-date information about most of these constraints may be found in Ref.…”