Measurement of the KL-KS mass difference using semileptonic decays of tagged neutral kaons

Adler, R.; Alhalel, T.; Angelopoulos, A.; Apostolakis, A.; Aslanides, E.; Backenstoss, G.; Bee, C. P.; Behnke, O.; Benelli, A.; Bennet, J.; Bertín, V.; Bienlein, J. K.; Blanc, F.; Bloch, P.; Bula, C.; Carlson, P.; Carroll, M.; Carvalho, J.; Cawley, E.; Charalambous, S.; Chardalas, M.; Chardin, G.; Chertok, M.; Cody, Ann Marie; Danielsson, Mats; Dedoussis, S.; Déjardin, M.; Derré, J.; Dodgson, M.; Duclos, J.; Ealet, A.; Eckart, B.; Eleftheriadis, C.; Evangelou, I.; Faravel, L.; Fassnacht, P.; Faure, J. L.; Felder, C.; Ferreira‐Marques, R.; Fetscher, W.; Fidecaro, M.; Filipčić, A.; Francis, D.; Fry, J. R.; Fuglesang, C.; Gabathuler, E.; Gamet, R.; Garreta, D.; Geralis, T.; Gerber, H.J.; Go, A.; Gumplinger, P.; Guyot, C.; Harrison, P. F.; Haselden, A.; Hayman, P.; Henry‐Couannier, F.; Heyes, W.G.; Hollander, R.W.; Hubert, E.; Jansson, Kjell; Johner, H.U.; Jon‐And, K.; Kettle, P. R.; Kochowski, C.; Kokkas, P.; Kreuger, R.; Lawry, T.; Gac, R. Le; Leimgruber, F.; Liolios, A.; Machado, E.; Maley, P.; Mandić, I.; Manthos, N.; Marel, G.; Mikuž, M.; Miller, J.; Montanet, F.; Nakada, T.; Onofre, A.; Pagels, B.; Papadopoulos, I.; Pavlopoulos, P.; Pelucchi, F.; Cunha, J. Pinto da; Policarpo, A.; Polivka, G.; Postma, H.; Rickenbach, R.; Roberts, B. L.; Rozaki, E.; Ruf, T.; Sacks, L.; Sakeliou, L.; Sanders, P.; Santoni, C.; Sarigiannis, K.; Schäfer, M.; Schaller, L.A.; Schietinger, T.; Schopper, A.; Schune, Ph.; Soares, A.; Tauscher, L.; Thibault, C.; Touchard, F.; Touramanis, C.; Triantis, F. A.; Tröster, D.; Beveren, Eef van; Eijk, C.W.E. van; Varner, G.; Vlachos, S.; Weber, Peter M.; Wigger, O.; Witzig, C.; Wolter, M. W.; Yèche, Ch; Zavrtanik, D.; Zimmerman, D.

doi:10.1016/0370-2693(95)01294-9

Cited by 28 publications

(8 citation statements)

References 8 publications

(1 reference statement)

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“…Improvement on the low energy experiments can also change the bounds. One of the low energy experiments published last year found ∆m LS = (0.5274 ± 0.0029 ± 0.0005) × 10 10h s −1 [24]; when fitted with the high energy experiments, a value of δg consistent with 0 at less than 1 standard deviation is obtained. On the other hand, without this new experiment, a similar fit of the other five experiments yields φδg = (1.38±0.77)×10 −21 (90/E av ) 2 .…”

Section: Introductionmentioning

confidence: 75%

“…The four other experiments [21,22,23,24] are at lower energy, with p K ≈ 5 GeV, or less with a weighted average ∆m LS = (0.5322 ± 0.0018)10 10h s −1 . A fit of equation (19) with the high and low energy value of ∆m LS gives : δm = (3.503 ± 0.012) × 10 −12 MeV and φδg = (8.0 ± 7.0) × 10 −22 × 90 Eav 2 , (where E av is the average energy for the high energy experiment).…”

Section: Introductionmentioning

confidence: 99%

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Test of special relativity from K physics

1998

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A violation of Local Lorentz Invariance (VLI) and hence the special theory of relativity or a violation of equivalence principle (VEP) in the Kaon system can, in principle, induce oscillations between K 0 andK 0 . We construct a general formulation in which simultaneous pairwise diagonalization of mass, momemtum, weak or gravitational eigenstates is not assumed. We discuss this problem in a general way and point out that, as expected, the VEP and VLI contributions are indistinguishable. We then insist on the fact that VEP or VLI can occur even when CPT is conserved. A possible CP violation of the superweak type induced by VEP or VLI is introduced and discussed. We show that the general VEP mechanism (or the VLI mechanism, but not both simultaneously), with or without conserved CPT, could be clearly tested experimentally through the energy dependence of the K L − K S mass difference and of η +− , η 00 , δ. Constraints imposed by present experiments are calculated. 1

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Section: Introductionmentioning

confidence: 75%

Section: Introductionmentioning

confidence: 99%

Test of special relativity from K physics

1998

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“…; > 0 and > 2 (2) Since these parameters would alter the time dependence of the neutral kaon state, they are best determined by studying the time evolution of neutral kaon decays, as measured by CPLEAR 12,13]. Measurements 3,14] at long lifetimes where the loss of quantum coherence is increased can be used as additional constraints.…”

Section: Introductionmentioning

confidence: 99%

Tests of CPT symmetry and quantum mechanics with experimental data from CPLEAR

Adler¹,

Angelopoulos²,

Apostolakis³

et al. 1995

Physics Letters B

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“…For the experimental value of the K L and K S mass difference we consider the CDF experiments [9,10], which were done at energies as high as 160 GeV. Although earlier low energy experiments [11,12,13] differ from these CDF values by 2 σ, a recent low energy experiment at CERN [14] gives a value close to the CDF values. Another advantage of CDF value is that it is done at higher energies.…”

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confidence: 99%

Constraints on background torsion field from K-physics

Mohanty

Sarkar

1998

Physics Letters B

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We point out that a background torsion field will produce an effective potential to the K andK with opposite signs. This allows us to constrain the background torsion field from the K L and K S mass difference, CP T violating K • andK • mass difference and the CP violating quantities ǫ and η +− . The most stringent bound on the cosmological background torsion T 0 < 10 −25 GeV comes from the direct measurement of the CP T violation.

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Measurement of the KL-KS mass difference using semileptonic decays of tagged neutral kaons

Abstract: We present a new measurement of the K L -K S mass difference (m) using semileptonic decays of neutral kaons. The measurement yields m = ( 0 : 5274 0:0029 stat: 0:0005 syst: ) 10 10 h=s.

Cited by 28 publications

References 8 publications

Test of special relativity from K physics

Test of special relativity from K physics

Tests of CPT symmetry and quantum mechanics with experimental data from CPLEAR

Constraints on background torsion field from K-physics

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