Effects of Possible<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mi>Δ</mml:mi><mml:mi>B</mml:mi><mml:mo>=</mml:mo><mml:mo>−</mml:mo><mml:mi>Δ</mml:mi><mml:mi>Q</mml:mi></mml:math>Transitions in Neutral<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mi>B</mml:mi></mml:math>Meson Decays

Dass, G.V.; Sarma, K.V.L.

doi:10.1103/physrevlett.72.1573

Cited by 9 publications

(6 citation statements)

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“…For instance, in Ref. [11] CPT invariance has been used for checking the rule ∆B = ∆Q, whereas in Ref. [12] θ has been constrained by assuming the validity of this rule.…”

mentioning

confidence: 99%

Testing CPT invariance by using C-even neutral-meson-antimeson correlated states

Dass

Grimus

Lavoura³

2001

J. High Energy Phys.

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We consider the decays of a correlated neutral-meson-antimeson state with Cparity +1. We show that there is CPT noninvariance in the mixing of the neutral mesons if, for any two decay modes f and g, the decay rate has a component R A which is antisymmetric under the interchange of the decay times t 1 and t 2 . In particular, one may cleanly extract the CPT-noninvariance parameter with the help of R A by using opposite-sign dilepton events.

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“…For instance, in Ref. [11] CPT invariance has been used for checking the rule ∆B = ∆Q, whereas in Ref. [12] θ has been constrained by assuming the validity of this rule.…”

mentioning

confidence: 99%

Testing CPT invariance by using C-even neutral-meson-antimeson correlated states

Dass

Grimus

Lavoura³

2001

J. High Energy Phys.

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“…(19) and proceeding in a similar manner. As the p-wave amplitude in M changes sign relative to that of M (Eqs.…”

Section: Relation To Transversity Amplitudesmentioning

confidence: 99%

“…For example, violation of ∆B = ∆Q keeping CPT invariant would lead to some interesting time-integrated dilepton asymmetries [19]. While a systematic study of the inverse problem, (i.e.…”

Section: Introductionmentioning

confidence: 99%

CPTviolation and triple-product correlations inBdecays

Patra

Kundu

2013

Phys. Rev. D

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The T-odd triple product (TP) asymmetries in B decays to a pair of vector mesons are treated as a good probe of CP violation because of the CPT symmetry. If CPT is no longer a good symmetry, such correlations between T-odd and CP-odd observables do not exist, and one might get unexpected nonzero TP asymmetries as a signal for CPT violation. We give a general formalism of TP asymmetries in the presence of CPT violation, either in decay or in neutral meson mixing. We also discuss how the observables depending on the transversity amplitudes are modified, and compare our expressions with the LHCb results, showing that the study of TP asymmetries might turn out to be one of the best probes for CPT violation.

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“…Similarly, the search for ∆B = −∆Q amplitudes at the Υ(4S)-factories has been discussed assuming CPT invariance [23].…”

Section: About the Searches For ∆P = −∆Q Amplitudesmentioning

confidence: 99%

“…Measurements of CPT violation at the Υ(4S)-factories have been considered either assuming the ∆B = ∆Q rule [18,19,20], or making some simplifying assumptions about the nature of the ∆B = −∆Q amplitudes [21]. Conversely, the experimental search for ∆S = −∆Q amplitudes in neutral-kaon decays [22], and the theoretical discussion of a search for ∆B = −∆Q amplitudes at the Υ(4S)-factories [23], have been made assuming CPT invariance. Xing [24] has recently shown that it is impossible to disentangle the violation of CPT from ∆B = −∆Q transitions by using exclusively di-lepton decays of the Υ(4S); we confirm his result here.…”

Section: Introductionmentioning

confidence: 99%

Disentangling violations ofCPTfrom other new-physics effects

Lavoura¹,

Silva

1999

Phys. Rev. D

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We analyze the prospects for observing CPT violation using neutralmeson P 0 -P 0 systems. Before one can claim a measurement of CPT violation, one must be able to rule out the possibility that its result is due to simpler new-physics effects. In particular, one must be able to separate the CPT-violating quantities from parameters violating the ∆P = ∆Q rule of semileptonic decays, and from new-physics contributions to the production mechanism of the neutral mesons. One can isolate CPT violation using the semileptonic decays of single, tagged neutral mesons; unfortunately, this situation cannot be implemented at the Υ(4S). For P 0 P 0 pairs produced in a correlated parity-odd state we show that, by combining the di-lepton with the single-lepton decays, it is in principle possible to extract unambiguously one CPT-violating parameter. Finally, we develop the formalism necessary for describing new-physics effects in the production mechanism; this includes both cascade decays and violations of the rule of associated production.

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Effects of PossibleΔB=−ΔQTransitions in NeutralBMeson Decays

Cited by 9 publications

References 0 publications

Testing CPT invariance by using C-even neutral-meson-antimeson correlated states

Testing CPT invariance by using C-even neutral-meson-antimeson correlated states

CPTviolation and triple-product correlations inBdecays

Disentangling violations ofCPTfrom other new-physics effects

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