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4. Pion correlations and resonance effects in $$\bar pp$$ annihilation at rest to 2π+2π-π0

Author

Apostolakis, A., Aslanides, E., Backenstoss, G., Bargassa, P., Behnke, O., Benelli, A., Bertin, V., Blanc, F., Bloch, P., Carlson, P., Carroll, M., Cawley, E., Chertok, M. B., Danielsson, M., Dejardin, M., Derre, J., Ealet, A., Eleftheriadis, C., Farave, L., Fetscher, W., Fidecaro, M., Filipčič, A., Francis, D., Fry, J., Gabathuler, E., Garnet, R., Gerber, H. -J., Go, A., Haselden, A., Hayman, P. J., Henry-Couannier, F., Hollander, R. W., JonAnd, K., Kettle, P. -R., Kokkas, P., Kreuger, R., Le Gac, R., Leimgruber, F., Mandic, I., Manthos, N., Marel, G., Mikuz, M., Miller, J., Montanet, F., Muller, A., Nakada, T., Pagels, B., Papadopoulos, I., Pavlopoulos, P., Polivka, G., Rickenbach, R., Roberts, B. L., Ruf, T., Sakeliou, L., Schäfer, M., Schaller, L. A., Schietinger, T., Schopper, A., Tauscher, L., Thibault, C., Touchard, F., Touramanis, C., Van Eijk, C. W. E., Vlachos, S., Weber, P., Wigger, O., Wolter, M., Zavrtanik, D., Zimmerman, D., Locher, M. P., Markushin, V. E., and CPLEAR Collaboration

Published
1999
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6. Direct determination of two-pion correlations for pp→ 2π+2π− annihilation at rest

Author

Angelopoulos, A., Apostolakis, A., Aslanides, E., Backenstoss, G., Bargassa, P., Behnke, O., Benelli, A., Bertin, V., Blanc, F., Bloch, P., Carlson, P., Carroll, M., Carvalho, J., Cawley, E., Charalambous, S., Chardin, G., Chertok, M. B., Cody, A., Danielsson, M., Dejardin, M., Derre, J., Ealet, A., Eleftheriadis, C., Evangelou, I., Faravel, L., Ferreira-Marques, R., Fetscher, W., Fidecaro, M., Filipčič, A., Francis, D., Fry, J., Gabathuler, E., Gamet, R., Garreta, D., Gerber, H. -J., Go, A., Haselden, A., Hayman, P. J., Henry-Couannier, F., Hollander, R. W., Hubert, E., Jon-And, K., Kettle, P. -R., Kokkas, P., Kreuger, R., Le Gac, R., Leimgruber, F., Liolios, A., Locher, M. P., Machado, E., Mandić, I, Manthos, N., Marel, G., Markushin, V. E., Mikuž, M., Miller, J., Montanet, F., Muller, A., Nakada, T., Pagels, B., Papadopoulos, I., Pavlopoulos, P., Pinto da Cunha, J., Policarpo, A., Polivka, G., Rickenbach, R., Roberts, B. L., Ruf, T., Sakeliou, L., Sanders, P., Schäfer, M., Schaller, L. A., Schietinger, T., Schopper, A., Soares, A., Tauscher, L., Thibault, C., Touchard, F., Touramanis, C., Triantis, F., Van Beveren, E., Van Eijk, C. W. E., Vlachos, S., Weber, P., Wigger, O., Wolter, M., Yeche, C., Zavrtanik, D., Zimmerman, D., and CPLEAR Collaboration

Published
1998
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8. Measurement ofCP violation parameters and test ofCPT invariance with $$\overline {K^0 } $$ and K0 at LEARand K0 at LEAR

Author

Adler, R., Alhalel, T., Angelopoulos, A., Apostolakis, A., Aslanides, E., Backenstoss, G., Bee, C. P., Behnke, O., Benelli, A., Bertin, V., Blanc, F., Bloch, P., Bula, Ch., Carlson, P., Carroll, M., Carvalho, J., Cawley, E., Charalambous, S., Chardalas, M., Chardin, G., Chertok, M. B., Cody, A., Danielsson, M., Dedoussis, S., Dejardin, M., Derre, J., 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., Filipčič, A., Francis, D., Fry, J., Gabathuler, E., Gamet, R., Garreta, D., Gerber, H. -J., Go, A., Guyot, C., Haselden, A., Hayman, P. J., Henry-Couannier, F., Hollander, R. W., Hubert, E., Jon-And, K., Kettle, P. -R., Kochowski, C., Kokkas, P., Kreuger, R., Le Gac, R., Leimgruber, F., Liolios, A., Machado, E., Mandić, I., Manthos, N., Marel, G., Mikuz, M., Miller, J., Montanet, F., Nakada, T., Onofre, A., Pagels, B., Papadopoulos, I., Pavlopoulos, P., Pinto da Cunha, J., Policarpo, A., Polivka, G., Rickenbach, R., Roberts, B. L., Rozaki, E., Ruf, T., Sakeliou, L., Sanders, P., Santoni, C., Sarigiannis, K., Schäfer, M., Schaller, L. A., Schopper, A., Schune, P., Soares, A., Tauscher, L., Thibault, C., Touchard, F., Touramanis, C., Triantis, F., Van Beveren, E., Van Eijk, C. W. E., Varner, G., Vlachos, S., Weber, P., Wigger, O., Wolter, M., Yèche, C., Zavrtanik, D., Zimmerman, D., and CPLEAR Collaboration

Published
1996
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9. Inclusive measurement of $$\bar p$$ annihilation at rest in gaseous hydrogen to final states containingρ andf 2

Author

Adler, R., Alhalel, T., Angelopoulos, A., Apostolakis, A., Aslanides, E., Backenstoss, G., Bee, C. P., Behnke, O., Bennet, J., Bertin, V., Bienlein, J. K., Bloch, P., Bula, Ch., Carlson, P., Carvalho, J., Cawley, E., Charalambous, S., Chardalas, M., Chardin, G., Chertok, M. B., Danielsson, M., Cody, A., Dedoussis, S., Dejardin, M., Derre, J., Dodgson, M., Dousse, J. C., 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., Filipčič, A., Francis, D., Fry, J., Fuglesang, C., Gabathuler, E., Gamet, R., Garreta, D., Geralis, T., Gerber, H. -J., Go, A., Gumplinger, P., Guyot, C., Harrisch, P. F., Haselden, A., Hayman, P. J., Henry-Couannier, F., Heyes, W. G., Hollander, R. W., Jansson, K., Johner, H. U., Jon-And, K., Kerek, A., Kern, J., Kettle, P. R., Kochowski, C., Kokkas, P., Kreuger, R., Lawry, T., Le Gac, R., Liolios, A., Machado, E., Maley, P., Mandić, I., Manthos, N., Marel, G., Mikuž, M., Miller, J., Montanet, F., Nakada, T., Onofre, A., Pagels, B., Pavlopoulos, P., Pelucchi, F., Pinto da Cunha, J., Policarpo, A., Polivka, G., Postma, H., Richkenbach, R., Roberts, B. L., Rozaki, E., Ruf, T., Sacks, L., Sakeliou, L., Sanders, P., Santoni, C., Sarigiannis, K., Schäfer, M., Schaller, L. A., Schopper, A., Schune, P., Soares, A., Tauscher, L., Thibault, C., Touchard, F., Touramanis, C., Triantis, F., Tröster, D. A., Van Beveren, E., Van Eijk, C. W. E., Varner, G., Vlachos, S., Weber, P., Wigger, O., Witzig, C., Wolter, M., Yeche, C., Zavrtanik, D., Zimmerman, D., and CPLEAR Collaboration

Published
1995
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10. Bose-Einstein correlations in $$\bar p$$ p annihilations at rest

Author

Adler, R., Alhalel, T., Angelopoulos, A., Apostolakis, A., Aslanides, E., Backenstoss, G., Bee, C. P., Behnke, O., Bennet, J., Bertin, V., Bienlein, J. K., Bloch, P., Bula, Ch., Carlson, P., Carvalho, J., Cawley, E., Charalambous, S., Chardalas, M., Chardin, G., Chertok, M. B., Danielsson, M., Cody, A., Dedoussis, S., Dejardin, M., Derre, J., Dodgson, M., Dousse, J. C., 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., Filipčič, A., Francis, D., Fry, J., 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. J., Henry-Couannier, F., Heyes, W. G., Hollander, R. W., Jansson, K., Johner, H. U., Jon-And, K., Kerek, A., Kern, J., Kettle, P. R., Kochowski, C., Kokkas, P., Kreuger, R., Lawry, T., Le Gac, R., Liolios, A., Machado, E., Maley, P., Mandić, I., Manthos, N., Marel, G., Mikuž, M., Miller, J., Montanet, F., Nakada, T., Onofre, A., Pagels, B., Pavlopoulos, P., Pelucchi, F., Pinto da Cunha, J., 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., Schopper, A., Schune, P., Soares, A., Tauscher, L., Thibault, C., Touchard, F., Touramanis, C., Triantis, F., Troster, D. A., Van Beveren, E., Van Eijk, C. W. E., Varner, G., Vlachos, S., Weber, P., Wigger, O., Witzig, C., Wolter, M., Yeche, C., Zavrtanik, D., Zimmerman, D., and CPLEAR Collaboration

Published
1994
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11. T-violation and CPT-invariance measurements in the CPLEAR experiment: a detailed description of the analysis of neutral-kaon decays to e pi nu

Author

Angelopoulos, A Aslanides, E Backenstoss, G Bargassa, P and Behnke, O Benelli, A Bertin, V Blanc, F Bloch, P and Carlson, P Carroll, M Cawley, E Chertok, MB Danielsson, M Dejardin, M Derre, J Ealet, A Eleftheriadis, C and Fetscher, W Fidecaro, M Filipcic, A Francis, D Fry, J and Gabathuler, E Gamet, R Gerber, HJ Go, A Haselden, A and Hayman, PJ Henry-Couannier, F Hollander, RW Jon-And, K and Kettle, PR Kokkas, P Kreuger, R Le Gac, R and Leimgruber, F Mandic, I Manthos, N Marel, G Mikuz, M and Miller, J Montanet, F Muller, A Nakada, T Pagels, B and Papadopoulos, I Pavlopoulos, P Polivka, G Rickenbach, R and Roberts, BL Ruf, T Sakeliou, L Schafer, M Schaller, LA and Schietinger, T Schopper, A Tauscher, L Thibault, C and Touchard, F Touramanis, C Van Eijk, CWE Vlachos, S and Weber, P Wigger, O Wolter, M Zavrtanik, D Zimmerman, D and CPLEAR Collaboration

Subjects
High Energy Physics::Experiment
Abstract

A detailed description of the analysis of neutral kaons decaying to e pi nu is given, based on the complete set of data collected with the CPLEAR experiment, Using a novel approach involving initially strangeness-tagged K-0 and (K) over bar (0), time-dependent decay-rate asymmetries were measured, These asymmetries enabled T- and CPT-violation parameters to be measured in the context of a systematic study. The highlights of this study arc the first direct observation of T violation and the direct determination of the CPT parameter Re(delta) with an accuracy improved by two orders of magnitude with respect to the current value.

Published
2001

12. T-violation and CPT-invariance measurements in the CPLEAR experiment: a detailed description of the analysis of neutral-kaon decays to e pi nu

Author

Angelopoulos, A., Aslanides, E., Backenstoss, G., Bargassa, P., Behnke, O., Benelli, A., Bertin, V., Blanc, F., Bloch, P., Carlson, P., Carroll, M., Cawley, E., Chertok, M. B., Danielsson, M., Dejardin, M., Derre, J., Ealet, A., Eleftheriadis, C., Fetscher, W., Fidecaro, M., Filipcic, A., Francis, D., Fry, J., Gabathuler, E., Gamet, R., Gerber, H. J., Go, A., Haselden, A., Hayman, P. J., Henry-Couannier, F., Hollander, R. W., Jon-And, K., Kettle, P. R., Kokkas, P., Kreuger, R., Le Gac, R., Leimgruber, F., Mandic, I., Manthos, N., Marel, G., Mikuz, M., Miller, J., Montanet, F., Muller, A., Nakada, T., Pagels, B., Papadopoulos, I., Pavlopoulos, P., Polivka, G., Rickenbach, R., Roberts, B. L., Ruf, T., Sakeliou, L., Schafer, M., Schaller, L. A., Schietinger, T., Schopper, A., Tauscher, L., Thibault, C., Touchard, F., Touramanis, C., Van Eijk, C. W. E., Vlachos, S., Weber, P., Wigger, O., Wolter, M., Zavrtanik, D., Zimmerman, D., and CPLEAR Collaboration

Subjects
s mass difference, semileptonic decays, tests, particle physics, system, parameter eta(+-)
Abstract

A detailed description of the analysis of neutral kaons decaying to e pi nu is given, based on the complete set of data collected with the CPLEAR experiment, Using a novel approach involving initially strangeness-tagged K-0 and (K) over bar (0), time-dependent decay-rate asymmetries were measured, These asymmetries enabled T- and CPT-violation parameters to be measured in the context of a systematic study. The highlights of this study arc the first direct observation of T violation and the direct determination of the CPT parameter Re(delta) with an accuracy improved by two orders of magnitude with respect to the current value. European Physical Journal C

Published
2001

13. K-0 reversible arrow (K)over-bar(0) transitions monitored by strong interactions: a new determination of the K-L-K-S mass difference

Author

Angelopoulos, A., Aslanides, E., Backenstoss, G., Bargassa, P., Behnke, O., Benelli, A., Bertin, V., Blanc, F., Bloch, P., Carlson, P., Carroll, M., Cawley, E., Chertok, M. B., Danielsson, M., Dejardin, M., Derre, J., Ealet, A., Eleftheriadis, C., Fetscher, W., Fidecaro, M., Filipcic, A., Francis, D., Fry, J., Gabathuler, E., Gamet, R., Gerber, H. J., Go, A., Haselden, A., Hayman, P. J., Henry-Couannier, F., Hollander, R. W., Jon-And, K., Kettle, P. R., Kokkas, P., Kreuger, R., Le Gac, R., Leimgruber, F., Mandic, I., Manthos, N., Marel, G., Mikuz, M., Miller, J., Montanet, F., Muller, A., Nakada, T., Pagels, B., Papadopoulos, I., Pavlopoulos, P., Polivka, G., Rickenbach, R., Roberts, B. L., Ruf, T., Sakeliou, L., Schafer, M., Schaller, L. A., Schietinger, T., Schopper, A., Tauscher, L., Thibault, C., Touchard, F., Touramanis, C., Van Eijk, C. W. E., Vlachos, S., Weber, P., Wigger, O., Wolter, M., Zavrtanik, D., Zimmerman, D., and CPLEAR Collaboration

Abstract

The CPLEAR set-up (modified) has been used to determine the K-L-K-S mass difference by a method where neutral-kaon strangeness oscillations are monitored through kaon strong interactions, rather than semileptonic decays, thus requiring no assumptions on CPT invariance for the decay amplitudes. The result, Deltam = (0.5343 +/- 0.0063(stat) +/- 0.0025(syst)) x 10(10)h/s, provides a valuable input for CPT tests. (C) 2001 Published by Elsevier Science B.V. Physics Letters B

Published
2001

14. Measurement of the energy dependence of the form factor f(+) in K-e3(0) decay

Author

Apostolakis, A., Aslanides, E., Backenstoss, G., Bargassa, P., Behnke, O., Benelli, A., Bertin, V., Blanc, F., Bloch, P., Carlson, P., Carroll, M., Cawley, E., Chertok, M. B., Danielsson, M., Dejardin, M., Derre, J., Ealet, A., Eleftheriadis, C., Fetscher, W., Fidecaro, M., Filipcic, A., Francis, D., Fry, J., Gabathuler, E., Gamet, R., Gerber, H. J., Go, A., Haselden, A., Hayman, P. J., Henry-Couannier, F., Hollander, R. W., Jon-And, K., Kettle, P. R., Kokkas, P., Kreuger, R., Le Gac, R., Leimgruber, F., Mandic, I., Manthos, N., Marel, G., Mikuz, M., Miller, J., Montanet, F., Muller, A., Nakada, T., Pagels, B., Papadopoulos, I., Pavlopoulos, P., Polivka, G., Rickenbach, R., Roberts, B. L., Ruf, T., Schafer, M., Schaller, L. A., Schietinger, T., Schopper, A., Tauscher, L., Thibault, C., Touchard, F., Touramanis, C., Van Eijk, C. W. E., Vlachos, S., Weber, P., Wigger, O., Wolter, M., Zavrtanik, D., Zimmerman, D., and CPLEAR Collaboration

Abstract

Neutral-kaon decays to pi e nu were analysed to determine the q(2) dependence of the K-e3(0), electroweak form factor f(+). Based on 365612 events, this form factor was found to have a linear dependence on q(2) with a slope lambda(+) = 0.0245 +/- 0.0012(stat) +/- 0.0022(syst). (C) 2000 Published by Elsevier Science B.V. All rights reserved. Physics Letters B

Published
2000

15. Measurement of the energy dependence of the form factor f(+) in K-e3(0) decay

Author

Apostolakis, A Aslanides, E Backenstoss, G Bargassa, P and Behnke, O Benelli, A Bertin, V Blanc, F Bloch, P and Carlson, P Carroll, M Cawley, E Chertok, MB Danielsson, M Dejardin, M Derre, J Ealet, A Eleftheriadis, C and Fetscher, W Fidecaro, M Filipcic, A Francis, D Fry, J and Gabathuler, E Gamet, R Gerber, HJ Go, A Haselden, A and Hayman, PJ Henry-Couannier, F Hollander, RW Jon-And, K and Kettle, PR Kokkas, P Kreuger, R Le Gac, R and Leimgruber, F Mandic, I Manthos, N Marel, G Mikuz, M and Miller, J Montanet, F Muller, A Nakada, T Pagels, B and Papadopoulos, I Pavlopoulos, P Polivka, G Rickenbach, R and Roberts, BL Ruf, T Schafer, M Schaller, LA Schietinger, T Schopper, A Tauscher, L Thibault, C Touchard, F and Touramanis, C Van Eijk, CWE Vlachos, S Weber, P Wigger, O Wolter, M Zavrtanik, D Zimmerman, D CPLEAR Collaboration

Abstract

Neutral-kaon decays to pi e nu were analysed to determine the q(2) dependence of the K-e3(0), electroweak form factor f(+). Based on 365612 events, this form factor was found to have a linear dependence on q(2) with a slope lambda(+) = 0.0245 +/- 0.0012(stat) +/- 0.0022(syst). (C) 2000 Published by Elsevier Science B.V. All rights reserved.

Published
2000

16. A detailed description of the analysis of the decay of neutral kaons to pi(+)pi(-) in the CPLEAR experiment

Author

Apostolakis, A., Aslanides, E., Backenstoss, G., Bargassa, P., Behnke, O., Benelli, A., Bertin, V., Blanc, F., Bloch, P., Carlson, P., Carroll, M., Cawley, E., Chertok, M. B., Danielsson, M., Dejardin, M., Derre, J., Ealet, A., Eleftheriadis, C., Fetscher, W., Fidecaro, M., Filipcic, A., Francis, D., Fry, J., Gabathuler, E., Gamet, R., Gerber, H. J., Go, A., Haselden, A., Hayman, P. J., Henry-Couannier, F., Hollander, R. W., Jon-And, K., Kettle, P. R., Kokkas, P., Kreuger, R., Le Gac, R., Leimgruber, F., Mandic, I., Manthos, N., Marel, G., Mikuz, M., Miller, J., Montanet, F., Muller, A., Nakada, T., Pagels, B., Papadopoulos, I., Pavlopoulos, P., Polivka, G., Rickenbach, R., Roberts, B. L., Ruf, T., Sakeliou, L., Schafer, M., Schaller, L. A., Schietinger, T., Schopper, A., Tauscher, L., Thibault, C., Touchard, F., Touramanis, C., Van Eijk, C. W. E., Vlachos, S., Weber, P., Wigger, O., Wolter, M., Yeche, C., Zavrtanik, D., Zimmerman, D., and CPLEAR Collaboration

Subjects
s mass difference, semileptonic decays, tests, system, violation parameter eta(+-)
Abstract

A detailed description is given of the analysis of neutral kaons decaying to pi (+)pi (-), based on the complete set of data collected with the CPLEAR experiment. Using a novel approach involving initially strangeness-tagged K-0 and (K) over bar (0), the time-dependent decay-rate asymmetry has been measured. This asymmetry, resulting from the interference between the K-S and K-L decay amplitudes, has enabled both the magnitude and phase of the CP-violation parameter, eta (+-), to be measured, with a precision comparable to that of the current world-average values. European Physical Journal C

Published
2000

17. Dispersion relation analysis of the neutral kaon regeneration amplitude in carbon

Author

Angelopoulos, A Apostolakis, A Aslanides, E Backenstoss, G and Bargassa, P Behnke, O Benelli, A Bertin, V Blanc, F and Bloch, P Carlson, P Carroll, M Cawley, E Chertok, MB and Danielsson, M Dejardin, M Derre, J Ealet, A and Eleftheriadis, C Faravel, L Fetscher, W Fidecaro, M and Filipcic, A Francis, D Fry, J Gabathuler, E Gamet, R and Gerber, HJ Go, A Haselden, A Hayman, PJ Henry-Couannier, F Hollander, RW Jon-And, K Kettle, PR Kokkas, P and Kreuger, R Le Gac, R Leimgruber, F Mandic, I Manthos, N and Marel, G Mikuz, M Miller, J Montanet, F Muller, A and Nakada, T Pagels, B Papadopoulos, I Pavlopoulos, P and Polivka, G Rickenbach, R Roberts, BL Ruf, T Schafer, M and Schaller, LA Schietinger, T Schopper, A Tauscher, L and Thibault, C Touchard, F Touramanis, C Van Eijk, CWE and Vlachos, S Weber, P Wigger, O Wolter, M Zavrtanik, D and Zimmerman, D Locher, MP Markushin, VE CPLEAR Collaboration

Abstract

We apply a forward dispersion relation to the regeneration amplitude for kaon scattering on C-12 using all available data. The CPLEAR data at low energies allow the determination of the net contribution from the subthreshold region which turns out to be much smaller than earlier evaluations, solving a long standing puzzle.

Published
1999

18. K-0-(K)over-bar(0) mass and decay-width differences: CPLEAR evaluation

Author

Angelopoulos, A Apostolakis, A Aslanides, E Backenstoss, G and Bargassa, P Behnke, O Benelli, A Bertin, V Blanc, F and Bloch, P Carlson, P Carroll, M Cawley, E Chertok, MB and Danielsson, M Dejardin, M Derre, J Ealet, A and Eleftheriadis, C Fetscher, W Fidecaro, M Filipcic, A and Francis, D Fry, J Gabathuler, E Gamet, R Gerber, HJ and Go, A Haselden, A Hayman, PJ Henry-Couannier, F and Hollander, RW Jon-And, K Kettle, PR Kokkas, P Kreuger, R and Le Gac, R Leimgruber, F Mandic, I Manthos, N Marel, G Mikuz, M Miller, J Montanet, F Muller, A Nakada, T and Pagels, B Papadopoulos, I Pavlopoulos, P Polivka, C and Rickenbach, R Roberts, BL Ruf, T Schafer, M Schaller, LA and Schietinger, T Schopper, A Tauscher, L Thibault, C and Touchard, F Touramanis, C Van Eijk, CWE Vlachos, S and Weber, P Wigger, O Wolter, M Zavrtanik, D Zimmerman, D and CPLEAR Collaboration

Subjects
High Energy Physics::Phenomenology, High Energy Physics::Experiment
Abstract

The CPT-violation parameters Re(delta) and Im(delta) determined recently by CPLEAR are used to evaluate the K-0-(K) over bar(0) mass and decay-width differences, as given by the difference between the diagonal elements of the neutral-kaon mixing matrix (M - i Gamma/2). The results - (M-K0K0 - M0 ($) over bar 0)) = (- 1.5 +/- 2.0) x 10(-18) GeV and (Gamma(K0K0) - Gamma(($) over bar 0 ($) over bar 0)) = (3.9 +/- 4.2) x 10(-18) GeV - are consistent with CPT invariance. The CPT invariance is also shown to hold within a few times 10(-3)-10(-4) for many of the amplitudes describing neutral-kaon decays to different final states. (C) 1999 Elsevier Science B.V. All rights reserved.

Published
1999

19. Contribution of CPLEAR to the physics of the neutral-kaon system

Author

Weber, P Angelopoulos, A Apostolakis, A Aslanides, E and Backenstoss, G Bargassa, P Behnke, O Benelli, A Bertin, V Blanc, F Bloch, P Carlson, P Carroll, M Cawley, E and Chertok, MB Danielsson, M Dejardin, M Derre, J and Ealet, A Eleftheriadis, CA Faravel, L Fetscher, W and Fidecaro, M Filipcic, A Francis, D Fry, J Gabathuler, E and Gamet, R Gerber, HJ Go, A Haselden, A Hayman, PJ and Henry-Couannier, F Hollander, RW Jon-And, K Kettle, PR and Kokkas, P Kreuger, R Le Gac, R Leimgruber, F Mandic, I and Manthos, N Marel, G Mikuz, M Miller, J Montanet, F and Muller, A Nakada, T Pagels, B Papadopoulos, I and Pavlopoulos, P Polivka, G Rickenbach, R Roberts, BL Ruf, T Schafer, M Schaller, LA Schietinger, T Schopper, A and Tauscher, L Thibault, C Touchard, F Touramanis, C Van Eijk, CWE Vlachos, S Weber, P Wigger, O Wolter, M and Zavrtanik, D Zimmerman, D CPLEAR Collaboration

Subjects
High Energy Physics::Phenomenology, High Energy Physics::Experiment
Abstract

We report the results of the CPLEAR experiment on CP-, T-, and CPT-symmetries in the neutral kaon system. CP-violation parameters are given for the K-0, (K) over bar(0) –> 2 pi, 3 pi decay channels. For the first time, T-violation is measured by a direct method using semileptonic decays. The CPT symmetry is tested through the parameters Im(delta) with a precision of 10(-5) and Re(delta) with a precision of a few 10(-4). With these two measurements, the difference in mass and width of K-0 and (K) over bar(0) are bound to within 10(-18) GeV. In the limit of CPT invariance in the neutral kaon decays, the K-0 and (K) over bar(0) masses are equal within 10(-19) GeV.

Published
1999

20. Pion correlations and resonance effects in (p)over-barp annihilation at rest

Author

Weber, P CPLEAR Collaboration

Abstract

We study pi pi correlations in the exclusive reactions (p) over bar p –> 2 pi(+)2 pi(-) and (p) over bar p –> 2 pi(+)2 pi(-)pi(0) at rest with complete reconstruction of the kinematics for each event. A new analysis technique has been developed which is model independent. With this new technique, which relies on double-differential distributions, no reference sample is needed to extract the correlation signal. The correlations are studied as a function of the four-pion invariant mass.

Published
1999

21. Tests of the Equivalence Principle with neutral kaons

Author

Apostolakis, A., Aslanides, E., Backenstoss, G., Bargassa, P., Behnke, O., Benelli, A., Bertin, V., Blanc, F., Bloch, P., Carlson, P., Carroll, M., Cawley, E., Chardin, G., Chertok, M. B., Danielsson, M., Dejardin, M., Derre, J., Ealet, A., Eleftheriadis, C., Faravel, L., Fetscher, W., Fidecaro, M., Filipcic, A., Francis, D., Fry, J., Gabathuler, E., Gamet, R., Gerber, H. J., Go, A., Haselden, A., Hayman, P. J., Henry-Couannier, F., Hollander, R. W., Jon-And, K., Kettle, P. R., Kokkas, P., Kreuger, R., Le Gac, R., Leimgruber, F., Mandic, I., Manthos, N., Marel, G., Mikuz, M., Miller, J., Montanet, F., Muller, A., Nakada, T., Pagels, B., Papadopoulos, I., Pavlopoulos, P., Polivka, G., Rickenbach, R., Roberts, B. L., Ruf, T., Sakeliou, L., Schafer, M., Schaller, L. A., Schietinger, T., Schopper, A., Tauscher, L., Thibault, C., Touchard, F., Touramanis, C., Van Eijk, C. W. E., Vlachos, S., Weber, P., Wigger, O., Wolter, M., Zavrtanik, D., Zimmerman, D., Ellis, J., Mavromatos, N. E., Nanopoules, D. V., and CPLEAR Collaboration

Subjects
antigravity, cplear, special relativity, quantum-mechanics, antiproton, system, cp violation, k-physics, symmetry, gravity
Abstract

We test the Principle of Equivalence for particles and antiparticles, using CPLEAR data on tagged K-0 and (K) over bar(0) decays into pi(+) pi(-). For the first time, we search for possible annual, monthly and diurnal modulations of the observables \eta(+-)\ and phi(+-), that could be correlated with variations in astrophysical potentials. Within the accuracy of CPLEAR, the measured values of \eta(+-)\ and phi(+-) are found not to be correlated with changes of the gravitational potential. We analyze data assuming effective scalar, vector and tensor interactions, and we conclude that the Principle of Equivalence between particles and antiparticles holds to a level of 6.5, 4.3 and 1.8 X 10(-9), respectively, for scalar, vector and tensor potentials originating from the Sun with a range much greater than the distance Earth-Sun. We also study energy-dependent effects that might arise from vector or tensor interactions. Finally, we compile upper limits on the gravitational coupling difference between K-0 and (K) over bar(0) as a function of the scalar, vector and tensor interaction range. (C) 1999 Elsevier Science B.V. All rights reserved. Physics Letters B

Published
1999

22. K-0-(K)over-bar(0) mass and decay-width differences: CPLEAR evaluation

Author

Angelopoulos, A., Apostolakis, A., Aslanides, E., Backenstoss, G., Bargassa, P., Behnke, O., Benelli, A., Bertin, V., Blanc, F., Bloch, P., Carlson, P., Carroll, M., Cawley, E., Chertok, M. B., Danielsson, M., Dejardin, M., Derre, J., Ealet, A., Eleftheriadis, C., Fetscher, W., Fidecaro, M., Filipcic, A., Francis, D., Fry, J., Gabathuler, E., Gamet, R., Gerber, H. J., Go, A., Haselden, A., Hayman, P. J., Henry-Couannier, F., Hollander, R. W., Jon-And, K., Kettle, P. R., Kokkas, P., Kreuger, R., Le Gac, R., Leimgruber, F., Mandic, I., Manthos, N., Marel, G., Mikuz, M., Miller, J., Montanet, F., Muller, A., Nakada, T., Pagels, B., Papadopoulos, I., Pavlopoulos, P., Polivka, C., Rickenbach, R., Roberts, B. L., Ruf, T., Schafer, M., Schaller, L. A., Schietinger, T., Schopper, A., Tauscher, L., Thibault, C., Touchard, F., Touramanis, C., Van Eijk, C. W. E., Vlachos, S., Weber, P., Wigger, O., Wolter, M., Zavrtanik, D., Zimmerman, D., and CPLEAR Collaboration

Subjects
cpt violation, phase, neutral kaon system
Abstract

The CPT-violation parameters Re(delta) and Im(delta) determined recently by CPLEAR are used to evaluate the K-0-(K) over bar(0) mass and decay-width differences, as given by the difference between the diagonal elements of the neutral-kaon mixing matrix (M - i Gamma/2). The results - (M-K0K0 - M0 ($) over bar 0)) = (- 1.5 +/- 2.0) x 10(-18) GeV and (Gamma(K0K0) - Gamma(($) over bar 0 ($) over bar 0)) = (3.9 +/- 4.2) x 10(-18) GeV - are consistent with CPT invariance. The CPT invariance is also shown to hold within a few times 10(-3)-10(-4) for many of the amplitudes describing neutral-kaon decays to different final states. (C) 1999 Elsevier Science B.V. All rights reserved. Physics Letters B

Published
1999

23. A determination of the CP violation parameter eta(+-) from the decay of strangeness-tagged neutral kaons

Author

Apostolakis, A Aslanides, E Backenstoss, G Bargassa, P and Behnke, O Benelli, A Bertin, V Blanc, F Bloch, P and Carlson, P Carroll, M Cawley, E Chertok, MB Danielsson, M Dejardin, M Derre, J Ealet, A Eleftheriadis, C and Fetscher, W Fidecaro, M Filipcic, A Francis, D and Gabathuler, E Gamet, R Gerber, HJ Go, A Haselden, A and Hayman, PJ Henry-Couannier, F Hollander, RW Jon-And, K and Kettle, PR Kokkas, P Kreuger, R Le Gac, R Leimgruber, F and Mandic, I Manthos, N Marel, G Mikuz, M Miller, J and Montanet, F Muller, A Nakada, T Pagels, B Papadopoulos, I Pavlopoulos, P Polivka, G Rickenbach, R Roberts, BL and Ruf, T Sakeliou, L Schafer, M Schaller, LA and Schietinger, T Schopper, A Tauscher, L Thibault, C and Touchard, F Touramanis, C Van Eijk, CWE Vlachos, S and Weber, P Wigger, O Wolter, M Yeche, C Zavrtanik, D and Zimmerman, D CPLEAR Collaboration

Abstract

{We report a measurement of the CP violation parameter eta(+-) from the time-dependent asymmetry between the decay rates of initially tagged K-0 and (K) over bar(0). The results are based on the complete data sample collected by the CPLEAR collaboration. With Delta m = (530.1 +/- 1.4) X 10(7)(h) over bar s(-1) and tau(S) = (89.34 +/- 0.08) ps, the values obtained are \textbackslash{}eta(+-)\textbackslash{} = (2.264 +/- 0.023(stat) +/- 0.026(syst) +/- 0.007 tau(s)) x 10(-3) and phi(+-) = 43.19 degrees +/- 0.53(stat)degrees +/- 0.28(syst)degrees + 0.42(Delta m)degrees. (C) 1999 Published by Elsevier Science B.V. All rights reserved.}

Published
1999

24. Determination of the T- and CPT-violation parameters in the neutral-kaon system using the Bell-Steinberger relation and data from CPLEAR

Author

Apostolakis, A., Aslanides, E., Backenstoss, G., Bargassa, P., Behnke, O., Benelli, A., Bertin, V., Blanc, F., Bloch, P., Carlson, P., Carroll, M., Cawley, E., Chertok, M. B., Danielsson, M., Dejardin, M., Derre, J., Ealet, A., Eleftheriadis, C., Fetscher, W., Fidecaro, M., Filipcic, A., Francis, D., Fry, J., Gabathuler, E., Gamet, R., Gerber, H. J., Go, A., Haselden, A., Hayman, P. J., Henry-Couannier, F., Hollander, R. W., Jon-And, K., Kettle, P. R., Kokkas, P., Kreuger, R., Le Gac, R., Leimgruber, F., Mandic, I., Manthos, N., Marel, G., Mikuz, M., Miller, J., Montanet, F., Muller, A., Nakada, T., Pagels, B., Papadopoulos, I., Pavlopoulos, P., Polivka, G., Rickenbach, R., Roberts, B. L., Sakeliou, L., Ruf, T., Schafer, M., Schaller, L. A., Schietinger, T., Schopper, A., Tauscher, L., Thibault, C., Touchard, F., Touramanis, C., Van Eijk, C. W. E., Vlachos, S., Weber, P., Wigger, O., Wolter, M., Zavrtanik, D., Zimmerman, D., and CPLEAR Collaboration

Subjects
search, decay
Abstract

Data from the CPLEAR experiment, together with the most recent world averages for some of the neutral-kaon parameters, were constrained with the Bell-Steinberger (or unitarity) relation, allowing the T-violation parameter Re(epsilon) and the CPT-violation parameter Im(delta) of the neutral-kaon mixing matrix to be determined with an increased accuracy: Re(epsilon)=(164.9 +/- 2.5) x 10(-5), Im(delta)=(2.4 +/- 5.0) x 10(-5). Moreover, the constraint allows the CM-violation parameter for the neutral-kaon semileptonic decays, Re(), to be determined for the first time. The Delta S not equal Delta Q parameters Re(x_) and Im(x(+)) are given with an increased accuracy. The quantity Re(y + x_), which enters the T-violation CPLEAR asymmetry previously published, is determined to be (- 0.2 +/- 0.3) x 10(-3). The value obtained for Re(delta) is in agreement with the one resulting from a previous unconstrained fit and has a slightly smaller error. (C) 1999 Elsevier Science B.V, All rights reserved. Physics Letters B

Published
1999

25. Contribution of CPLEAR to the physics of the neutral-kaon system

Author

Benelli, A CPLEAR collaboration

Subjects
High Energy Physics::Phenomenology, High Energy Physics::Experiment
Abstract

We report the results of the CPLEAR experiment on CP-, T- and CPT-symmetries in the neutral kaon system. CP-violation parameters are given for different decay channels. For the first time T-violation is measured by a direct method using semileptonic decays. The CPT symmetry in the kaons decays is tested through the parameters Im(delta), from the Bell-Steinberger relation, with a precision. of 10(-5) and Re(delta) with a precision of a. few 10(-4) (two order of magnitude better than the previous measurement). These two measurements allow us to bound the difference in mass and width of K-0 and (K) over bar(0) It to be equal within 10(-18) GeV. In the limit of CPT invariance in the neutral kaon decays, the K-0 and (K) over bar(0) masses are equal within 10(-19) GeV.

Published
1999

26. Measurement of the CP-violation parameter eta(00) using tagged (K)over-bar(0) and K-0

Author

Angelopoulos, A Apostolakis, A Aslanides, E Backenstoss, G and Bargassa, P Behnke, O Benelli, A Bertin, V Blanc, F and Bloch, P Carlson, P Carroll, M Carvalho, J Cawley, E and Charalambous, S Chardin, G Chertok, MB Cody, A and Danielsson, M Dejardin, M Derre, J Ealet, A and Eleftheriadis, C Evangelou, I Faravel, L Ferreira-Marques, R and Fetscher, W Fidecaro, M Filipcic, A Francis, D Fry, J Gabathuler, E Gamet, R Garreta, D Gerber, HJ Go, A and Haselden, A Hayman, PJ Henry-Couannier, F Hollander, RW and Hubert, E Jon-And, K Kettle, PR Kokkas, P Kreuger, R and Le Gac, R Leimgruber, F Liolios, A Machado, E and Mandic, I Manthos, N Marel, G Mikuz, M Miller, J and Montanet, F Muller, A Nakada, T Pagels, B Papadopoulos, I Pavlopoulos, P da Cunha, JP Policarpo, A Polivka, G and Rickenbach, R Roberts, BL Ruf, T Sakeliou, L and Sanders, P Schafer, M Schaller, LA Schietinger, T and Schopper, A Tauscher, L Thibault, C Touchard, F and Touramanis, C Triantis, F Van Beveren, E Van Eijk, CWE and Vlachos, S Weber, P Wigger, O Wolter, M Yeche, C and Zavrtanik, D Zimmerman, D CPLEAR Collaboration

Abstract

{The CP-violation parameter eta(00) is determined through the eigentime-dependent asymmetry in the rates of initially tagged (K) over bar(0) and K-0 decaying to pi(0) pi(0). From the analysis of the complete data set we obtain the values \textbackslash{}eta(00)\textbackslash{} = {[}2.47 +/- 0.31(stat) +/- 0.24(syst.)] x 10(-3) and phi(00) = 42.0(0) +/- 5.6(stat.)(0) +/- 1.9(syst.)(0). (C) 1998 Elsevier Science B.V.}

Published
1998

27. First direct observation of time-reversal non-invariance in the neutral-kaon system

Author

Angelopoulos, A Apostolakis, A Aslanides, E Backenstoss, G and Bargassa, P Behnke, O Benelli, A Bertin, V Blanc, F and Bloch, P Carlson, P Carroll, M Cawley, E and Charalambous, S Chertok, MB Danielsson, M Dejardin, M and Derre, J Ealet, A Eleftheriadis, C Faravel, L Fetscher, W Fidecaro, M Filipcic, A Francis, D Fry, J and Gabathuler, E Gamet, R Gerber, HJ Go, A Haselden, A and Hayman, PJ Henry-Couannier, F Hollander, RW Jon-And, K and Kettle, PR Kokkas, P Kreuger, R Le Gac, R Leimgruber, F and Mandic, I Manthos, N Marel, G Mikuz, M Miller, J and Montanet, F Muller, A Nakada, T Pagels, B Papadopoulos, I Pavlopoulos, P Policarpo, A Polivka, G Rickenbach, R and Roberts, BL Ruf, T Santoni, C Schafer, M Schaller, LA Schietinger, T Schopper, A Tauscher, L Thibault, C and Touchard, F Touramanis, C Van Eijk, CWE Vlachos, S and Weber, P Wigger, O Wolter, M Zavrtanik, D Zimmerman, D and CPLEAR Collaboration

Abstract

We report on the first observation of time-reversal symmetry violation through a comparison of the probabilities of (K) over bar(0) transforming into K-0 and K-0 into (K) over bar(0) as a function of the neutral-kaon eigentime t. The comparison is based on the analysis of the neutral-kaon semileptonic decays recorded in the CPLEAR experiment. There, the strangeness of the neutral kaon at time t = 0 was tagged by the kaon charge in the reaction –> K (+/-) pi (+/-) K-0 ((K) over bar(0)) at rest, whereas the strangeness of the kaon at the decay time t = tau was tagged by the lepton charge in the final state. An average decay-rate asymmetry [R((K) over bart=00 –> e+pi-nut=tau) - R(Kt=00 –> e-pi+t=tau)/R((K) over bart=00 –> e+pi-nut=tau) + R(Kt=00 –> e-pi+t=tau)] = (6.6 +/- 1.3stat +/- 1.0syst) X 10-3 was measured over the interval 1 tau(S) < tau < 20 tau(S), thus leading to evidence for time-reversal non-invariance. (C) 1998 Elsevier Science B.V. All righs reserved.

Published
1998

28. Search for CP violation in the decay of tagged (K)over-bar(0) and K-0 to pi(0)pi(0)pi(0)

Author

Angelopoulos, A Apostolakis, A Aslanides, E Backenstoss, G and Bargassa, P Behnke, O Benelli, A Bertin, V Blanc, F and Bloch, P Carlson, P Carroll, M Cawley, E Chertok, MB and Danielsson, M Dejardin, M Derre, J Ealet, A and Eleftheriadis, C Faravel, L Fetscher, W Fidecaro, M and Filipcic, J Francis, D Fry, J Gabathuler, E Gamet, R and Gerber, HJ Go, A Haselden, A Hayman, PJ Henry-Couannier, F Hollander, RW Jon-And, K Kettle, PR Kokkas, P and Kreuger, R Le Gac, R Leimgruber, F Mandic, I Manthos, N and Marel, G Mikuz, M Miller, J Montanet, F Muller, A and Nakada, T Pagels, B Papadopoulos, I Pavlopoulos, P and Polivka, G Rickenbach, R Roberts, BL Ruf, T Schafer, M and Schaller, LA Schietinger, T Schopper, A Tauscher, L and Thibault, C Touchard, F Touramanis, C Van Eijk, CWE and Vlachos, S Weber, P Wigger, O Wolter, M Zavrtanik, D and Zimmerman, D CPLEAR Collaboration

Abstract

The CPLEAR experiment measured the eigentime-dependent asymmetry in the rates of initially tagged (K) over bar(o) and K-o decaying to pi(o) pi(o) pi(o) in order to study the interference between the CP-violating K-S and the CP-conserving K-L decay amplitudes. Without assuming CPT invariance, we obtain for the CP-violation parameter eta(ooo) the values Re(eta(ooo))= 0.18 +/- 0.14(stat.) +/- 0.06(syst.) and Im(eta(ooo)) = 0.15 +/- 0.20(stat) +/- 0.03(syst:) Requiring Re(eta(ooo)) to be equal to Re(epsilon) we obtain Im(eta(ooo)) = -0.05 +/- 0.12(stat.) +/- 0.05(syst:) The corresponding upper limit for the branching ratio of the K-S –> pi(o) pi(o) pi(o) decay is deduced to be BKs –> pi o pi o pi o

Published
1998

29. Measurement of the K-L-K-S mass difference using semileptonic decays of tagged neutral kaons

Author

Angelopoulos, A Apostolakis, A Aslanides, E Backenstoss, G and Bargassa, P Behnke, O Benelli, A Bertin, V Blanc, F and Bloch, P Carlson, P Carroll, M Cawley, E Chertok, MB and Danielsson, M Dejardin, M Derre, J Ealet, A and Eleftheriadis, C Faravel, L Fetscher, W Fidecaro, M and Filipcic, A Francis, D Fry, J Gabathuler, E Gamet, R and Gerber, HJ Go, A Haselden, A Hayman, PJ Henry-Couannier, F Hollander, RW Jon-And, K Kettle, PR Kokkas, P and Kreuger, R Le Gac, R Leimgruber, F Mandic, I Manthos, N and Marel, G Mikuz, M Miller, J Montanet, F Muller, A and Nakada, T Pagels, B Papadopoulos, I Pavlopoulos, P and Polivka, G Rickenbach, R Roberts, BL Ruf, T Schafer, M and Schaller, LA Schietinger, T Schopper, A Tauscher, L and Thibault, C Touchard, F Touramanis, C Van Eijk, CWE and Vlachos, S Weber, P Wigger, O Wolter, M Zavrtanik, D and Zimmerman, D CPLEAR Collaboration

Abstract

We report on a new measurement of the K-L-K-S mass difference Delta m using the CPLEAR full data sample of neutral-kaon decays to e pi nu. The result is Delta m = (0.5295 +/- 0.0020(stat) +/- 0.0003(syst)) X 10(10) (h) over bar/s. It includes earlier data reported in R. Adler et al., CPLEAR Collaboration, Phys. Lett. B 363 (1995) 237. A measurement of the Delta S = Delta Q violating parameter Re(x) is also obtained. (C) 1998 Elsevier Science B.V. All rights reserved.

Published
1998

30. An EPR experiment testing the non-separability of the K-0(K)over-bar(0) wave function

Author

Apostolakis, A Aslanides, E Backenstoss, G Bargassa, P and Behnke, O Benelli, A Bertin, V Blanc, F Bloch, P and Carlson, P Carroll, M Cawley, E Chardin, G Chertok, MB and Cody, A Dejardin, M Derre, J Ealet, A Eleftheriadis, C Ferreira-Marques, R Fetscher, W Fidecaro, M Filipcic, A Francis, D Fry, J Gabathuler, E Gamet, R Gerber, HJ Go, A Guyot, C Haselden, A Hayman, PJ and Henry-Couannier, F Hollander, RW Hubert, E Jon-And, K and Kettle, PR Kochowski, C Kokkas, P Kreuger, R Le Gac, R and Leimgruber, F Mandic, I Manthos, N Marel, G Mikuz, M and Miller, J Montanet, F Muller, A Nakada, T Pagels, B and Papadopoulos, I Pavlopoulos, P Policarpo, A Polivka, G and Rickenbach, R Roberts, BL Ruf, T Schafer, M and Schaller, LA Schietinger, T Schopper, A Schune, P and Tauscher, L Thibault, C Touchard, F Touramanis, C Van Eijk, CWE Vlachos, S Weber, P Wigger, O Wolter, M and Yeche, C Zavrtanik, D CPLEAR Collaboration

Abstract

The EPR-type strangeness correlation in the K-0 system produced in the reaction –> K-0 at rest has been tested using the CPLEAR detector. The strangeness was tagged via strong interaction with absorbers away from the creation point. The results are consistent with the QM non-separability of the wave function and exclude a spontaneous wave-function factorisation ar creation (CL > 99.99%). (C) 1998 Elsevier Science B.V.

Published
1998

31. A determination of the CPT violation parameter Re(delta) from the semileptonic decay of strangeness-tagged neutral kaons

Author

Angelopoulos, A Apostolakis, A Aslanides, E Backenstoss, G and Bargassa, P Behnke, O Benelli, A Bertin, V Blanc, F and Bloch, P Carlson, P Carroll, M Cawley, E Chertok, MB and Danielsson, M Dejardin, M Derre, J Ealet, A and Eleftheriadis, C Faravel, L Fetscher, W Fidecaro, M and Filipcic, A Francis, D Fry, J Gabathuler, E Gamet, R and Gerber, HJ Go, A Haselden, A Hayman, PJ Henry-Couannier, F Hollander, RW Jon-And, K Kettle, PR Kokkas, P and Kreuger, R Le Gac, R Leimgruber, F Mandic, I Manthos, N and Marel, G Mikuz, M Miller, J Montanet, F Muller, A and Nakada, T Pagels, B Papadopoulos, I Pavlopoulos, P and Polivka, G Rickenbach, R Roberts, BL Ruf, T Schafer, M and Schaller, LA Schietinger, T Schopper, A Tauscher, L and Thibault, C Touchard, F Touramanis, C Van Eijk, CWE and Vlachos, S Weber, P Wigger, O Wolter, M Zavrtanik, D and Zimmerman, D CPLEAR Collaboration

Subjects
High Energy Physics::Experiment
Abstract

We have improved by two orders of magnitude the Limit currently available for the CPT violation parameter Re(delta). To this purpose we have analyzed the full sample of neutral-kaon decays to e pi nu recorded in the CPLEAR experiment, where the strangeness of the neutral kaons was tagged at production and decay time. An appropriate function of the measured decay rates, including information from the analysis of pi(+)pi(-) decay channel, gives directly Re(delta). The result Re(delta) = (3.0 +/- 3.3(stat) +/- 0.6(syst)) X 10(-4) is compatible with zero. Values for the parameters Im(delta), Re(x(-)) and Im(x(+)) were also obtained. (C) 1998 Elsevier Science B.V. All rights reserved.

Published
1998

32. Physics at CPLEAR

Author

Andrej Filipcic, M. Mikuž, D. Francis, A.J.P.L. Policarpo, P. Bloch, O. Behnke, P. Weber, F. Leimgruber, A. Schopper, M. Schafer, G. Polivka, P.J. Hayman, M. Fidecaro, R. Ferreira-Marques, P.-R. Kettle, P. Bargassa, A. Haselden, O. Wigger, A. Muller, E. Gabathuler, R. Rickenbach, R. Le Gac, P. Pavlopoulos, F. Blanc, Igor Mandić, T. Schietinger, E. Aslanides, Ch Yèche, A. Ealet, Danilo Zavrtanik, C. Thibault, C. Eleftheriadis, A. Go, J. R. Fry, B. Pagels, Marc Dejardin, C. Touramanis, H.-J. Gerber, Michael C. Carroll, T. Ruf, R. Gamet, I. Papadopoulos, L. Sakeliou, Panagiotis Kokkas, Jeffrey Boone Miller, Per Carlson, V. Bertin, R. Kreuger, D. Zimmerman, A. Apostolakis, G. Marel, Nikolaos Manthos, B. L. Roberts, W. Fetscher, A. Benelli, C.W.E. van Eijk, Marcin Wladyslaw Wolter, J. Derre, F. Henry-Couannier, G. Backenstoss, Sotirios Vlachos, A. Angelopoulos, R.W. Hollander, Mats Danielsson, M.B. Chertok, K. Jon-And, Lukas A. Schaller, C.P. Bee, T. Nakada, E. Cawley, F. Touchard, F. Montanet, L. Tauscher, Centre de Physique des Particules de Marseille (CPPM), Aix Marseille Université (AMU)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Centre de Spectrométrie Nucléaire et de Spectrométrie de Masse (CSNSM), Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Sud - Paris 11 (UP11), CPLEAR, Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), and Damoiseaux, Magali

Subjects
Physics, Particle physics, Antiparticle, [PHYS.HEXP] Physics [physics]/High Energy Physics - Experiment [hep-ex], 010308 nuclear & particles physics, General relativity, Time evolution, General Physics and Astronomy, 01 natural sciences, Symmetry (physics), symbols.namesake, Antimatter, 0103 physical sciences, symbols, [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], CP violation, EPR paradox, 010306 general physics, Coherence (physics)
Abstract

LEAR offered unique opportunities to study the symmetries which exist between matter and antimatter. At variance with other approaches at this facility, CPLEAR was an experiment devoted to the study of , and symmetries in the neutral-kaon system. A variety of measurements allowed us to determine with high precision the parameters which describe the time evolution of the neutral kaons and their antiparticles, including decay amplitudes, and the related symmetry properties. Limits concerning quantum-mechanical predictions (EPR, coherence of the wave function) or the equivalence principle of general relativity have been obtained. An account of the main features of the experiment and its performances is given here, together with the results achieved. http://www.sciencedirect.com/science/article/B6TVP-47F7DN6-2/1/21e8338e47f0a67bf401b4882a11ceee

Published
2003

33. $K^{0} \leftrightarrow \overline{K}^{0}$ transitions monitored by strong interactions : a new determination of the $K_{L}-K_{S}$ mass difference

Author

Angelopoulos, A., Aslanides, E., Backenstoss, G., Bargassa, P., Behnke, O., Benelli, A., Bertin, V., Blanc, F., Bloch, P., Carlson, P., Carroll, M., Cawley, E., Chertok, M B., Danielsson, M., Dejardin, M., Derre, J., Ealet, A., Eleftheriadis, C., Fetscher, W., Fidecaro, M., Filipcic, A., Francis, D., Fry, J., Gabathuler, E., Gamet, R., Gerber, H J., Go, A., Haselden, A., Hayman, P J., Henry-Couannier, F., Hollander, R W., Jon-And, K., Kettle, P R., Kokkas, P., Kreuger, R., Le Gac, R., Leimgruber, F., Mandic, I., Manthos, N., Marel, G., Mikuz, M., Miller, J., Montanet, F., Müller, A., Nakada, T., Pagels, B., Papadopoulos, I., Pavlopoulos, P., Polivka, G., Rickenbach, R., Roberts, B L., Ruf, T., Sakelliou, L., Schafer, M., Schaller, L A., Schietinger, T., Schopper, A., Tauscher, L., Thibault, C., Touchard, F., Touramanis, C., Van Eijk, C W E., Vlachos, S., Weber, P., Wigger, O., Wolter, M., Zavrtanik, D., Zimmerman, D., Lorgeril, Jocelyne, Centre de Physique des Particules de Marseille (CPPM), Aix Marseille Université (AMU)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Centre de Spectrométrie Nucléaire et de Spectrométrie de Masse (CSNSM), Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), CPLEAR, and Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Sud - Paris 11 (UP11)

Subjects
[PHYS.HEXP] Physics [physics]/High Energy Physics - Experiment [hep-ex], [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex]
Published
2001

34. A review of the latest CPLEAR results on T violation and CPT invariance in the neutral-kaon system

Author

Angelopoulos, A., Apostolakis, A., Aslanides, E., Backenstoss, G., Bargassa, P., Behnke, O., Benelli, A., Bertin, V., Blanc, F., Bloch, P., Carlson, P., Carroll, M., Cawley, E., Chertok, M.B., Danielsson, M., Dejardin, M., Derre, J., Ealet, A., Eleftheriadis, C., Fetscher, W., Fidecaro, M., Filipcic, A., Francis, D., Fry, J., Gabathuler, E., Gamet, R., Gerber, H.J., Go, A., Haselden, A., Hayman, P.J., Henry-Couannier, F., Hollander, R.W., Jon-And, K., Kettle, P.R., Kokkas, P., Kreuger, R., Le Gac, R., Leimgruber, F., Mandic, I., Manthos, N., Marel, G., Mikuz, M., Miller, J., Montanet, F., Müller, A., Nakada, T., Pagels, B., Papadopoulos, I., Pavlopoulos, P., Polivka, G., Rickenbach, R., Roberts, B.L., Ruf, T., Schafer, M., Schaller, L.A., Schietinger, T., Schopper, A., Tauscher, L., Thibault, C., Touchard, F., Touramanis, C., Van Eijk, C.W.E., Vlachos, S., Weber, P., Wigger, O., Wolter, M., Zavrtanik, D., Zimmerman, D., Centre de Physique des Particules de Marseille (CPPM), Aix Marseille Université (AMU)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Centre de Spectrométrie Nucléaire et de Spectrométrie de Masse (CSNSM), Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Sud - Paris 11 (UP11), CPLEAR, Lorgeril, Jocelyne, and Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)

Subjects
[PHYS.HEXP] Physics [physics]/High Energy Physics - Experiment [hep-ex], [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex]
Published
2000

35. First direct observation of time-reversal violation

Author

Angelopoulos, A., Apostolakis, A., Aslanides, E., Backentos, G., Bargassa, P., Behnke, O., Benelli, A., Bertin, V., Blanc, F., Bloch, P., Carlson, P., Carroll, M., Cawley, E., Chertok, M.B., Danielsson, M., Dejardin, M., Derre, J., Ealet, A., Eleftheriadis, C., Fetscher, W., Fidecaro, M., Filipic, A., Francis, D., Fry, J., Gabathuler, E., Go, A., Haselden, A., Hayman, P.J., Henry-Couannier, F., Hollander, R.W., Jon And, K., Kettle, P.R., Kokkas, P., Kreuger, R., Le Gac, R., Leimgruber, F., Mandic, I., Manthos, N., Marel, G., Mikuz, M., Miller, J., Montanet, F., Müller, A., Nakada, T., Pagels, B., Papadopoulos, I., Pavlopoulos, P., Rickenbach, R., Roberts, B.L., Ruf, T., Schafer, M., Schaller, L.A., Schietinger, T., Schopper, A., Tauscher, L., Thibault, C., Touchard, F., Touramanis, C., Van Eijk, C.W.E., Vlachos, S., Weber, P., Wigger, O., Wolter, M., Zavrtanik, D., Zimmerman, D., Centre de Physique des Particules de Marseille (CPPM), Aix Marseille Université (AMU)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Centre de Spectrométrie Nucléaire et de Spectrométrie de Masse (CSNSM), Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Sud - Paris 11 (UP11), Z. Parsa, W.J. Marciano, CPLEAR, and Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)

Subjects
[PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex]
Published
2000

36. Experimental tests of CPT invariance

Author

Apostolakis, A., Aslanides, E., Backenstoss, G., Bargassa, P., Behnke, O., Benelli, A., Bertin, V., Blanc, F., Bloch, P., Carlson, P., Carroll, M., Cawley, E., Chertok, M.B., Danielsson, M., Dejardin, M., Derre, J., Ealet, A., Eleftheriadis, C., Fetscher, W., Fidecaro, M., Filipcic, A., Francis, D., Fry, J., Gabathuler, E., Gamet, R., Gerber, H.J., Go, A., Haselden, A., Hayman, P.J., Henry-Couannier, F., Hollander, R.W., Jon-And, K., Kettle, P.R., Kokkas, P., Kreuger, R., Le Gac, R., Leimgruber, F., Mandic, I., Manthos, N., Marel, G., Mikuz, M., Miller, J., Montanet, F., Müller, A., Nakada, T., Pagels, B., Papadopoulos, I., Pavlopoulos, P., Polivka, G., Rickenbach, R., Roberts, B.L., Ruf, T., Schafer, M., Schaller, L.A., Schietinger, T., Schopper, A., Tauscher, L., Thibault, C., Touchard, F., Touramanis, C., Van Eijk, C.W.E., Vlachos, S., Weber, P., Wigger, O., Wolter, M., Zavrtanik, D., Zimmerman, D., Centre de Physique des Particules de Marseille (CPPM), Aix Marseille Université (AMU)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Centre de Spectrométrie Nucléaire et de Spectrométrie de Masse (CSNSM), Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), J.F. Nieves, CPLEAR, and Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Sud - Paris 11 (UP11)

Subjects
[PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex]
Published
2000

37. Time violation and CPT tests at CPLEAR

Author

Apostolakis, A., Aslanides, E., Backenstoss, G., Bargassa, P., Behnke, O., Benelli, A., Bertin, V., Blanc, F., Bloch, P., Carlson, P., Carroll, M., Cawley, E., Chertok, M.B., Danielsson, M., Dejardin, M., Derre, J., Ealet, A., Eleftheriadis, C., Fetscher, W., Fidecaro, M., Filipcic, A., Francis, D., Fry, J., Gabathuler, E., Gamet, R., Gerber, H.J., Go, A., Haselden, A., Hayman, P.J., Henry-Couannier, F., Hollander, R.W., Jon-And, K., Kettle, P.R., Kokkas, P., Kreuger, R., Le Gac, R., Leimgruber, F., Mandic, I., Manthos, N., Marel, G., Mikuz, M., Miller, J., Montanet, F., Müller, A., Nakada, T., Pagels, B., Papadopoulos, I., Pavlopoulos, P., Polivka, G., Rickenbach, R., Roberts, B.L., Ruf, T., Schafer, M., Schaller, L.A., Schietinger, T., Schopper, A., Tauscher, L., Thibault, C., Touchard, F., Touramanis, C., Van Eijk, C.W.E., Vlachos, S., Weber, P., Wigger, O., Wolter, M., Zavrtanik, D., Zimmerman, D., Centre de Physique des Particules de Marseille (CPPM), Aix Marseille Université (AMU)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Centre de Spectrométrie Nucléaire et de Spectrométrie de Masse (CSNSM), Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Guo H.X., Thomas A.W., Williams A.G., CPLEAR, Lorgeril, Jocelyne, Guo H.X., Thomas A.W., Williams A.G., and Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Sud - Paris 11 (UP11)

Subjects
[PHYS.HEXP] Physics [physics]/High Energy Physics - Experiment [hep-ex], [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex]
Published
2000

38. A detailed description of the analysis of the decay of neutral kaons to $\pi^+ \pi^-$ in the CPLEAR experiment

Author

Apostolakis, A., Aslanides, E., Backenstoss, G., Bargassa, P., Behnke, O., Benelli, A., Bertin, V., Blanc, F., Bloch, P., Carlson, P., Carroll, M., Cawley, E., Chertok, M B., Danielsson, M., Dejardin, M., Derre, J., Ealet, A., Eleftheriadis, C., Fetscher, W., Fidecaro, M., Filipcic, A., Francis, D., Fry, J., Gabathuler, E., Gamet, R., Gerber, H J., Go, A., Haselden, A., Hayman, P J., Henry-Couannier, F., Hollander, R W., Jon-And, K., Kettle, P R., Kokkas, P., Kreuger, R., Le Gac, R., Leimgruber, F., Mandic, I., Manthos, N., Marel, G., Mikuz, M., Miller, J., Montanet, F., Müller, A., Nakada, T., Pagels, B., Papadopoulos, I., Pavlopoulos, P., Polivka, G., Rickenbach, R., Roberts, B L., Ruf, T., Sakelliou, L., Schafer, M., Schaller, L A., Schietinger, T., Schopper, A., Tauscher, L., Thibault, C., Touchard, F., Touramanis, C., van Eijk, C W E., Vlachos, S., Weber, P., Wigger, O., Wolter, M., Yeche, C., Zavrtanik, D., Zimmerman, D., Centre de Physique des Particules de Marseille (CPPM), Aix Marseille Université (AMU)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Centre de Spectrométrie Nucléaire et de Spectrométrie de Masse (CSNSM), Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), CPLEAR, and Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Sud - Paris 11 (UP11)

Subjects
Physics, Particle physics, Physics and Astronomy (miscellaneous), 010308 nuclear & particles physics, media_common.quotation_subject, 01 natural sciences, Asymmetry, Amplitude, 0103 physical sciences, Pi, [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], CP violation, High Energy Physics::Experiment, 010306 general physics, Engineering (miscellaneous), Particle Physics - Experiment, media_common
Abstract

A detailed description is given of the analysis of neutral kaons decaying to \({\mathrm{\pi^+\pi^-}}\), based on the complete set of data collected with the CPLEAR experiment. Using a novel approach involving initially strangeness-tagged \({\mathrm{K^0}}\) and \({\mathrm{\overline{K}^0}}\), the time-dependent decay-rate asymmetry has been measured. This asymmetry, resulting from the interference between the \({\mathrm{K_S}}\) and \({\mathrm{K_L}}\) decay amplitudes, has enabled both the magnitude and phase of the CP-violation parameter, \(\eta_{+-}\), to be measured, with a precision comparable to that of the current world-average values.

Published
2000

39. Measurement of the energy dependence of the form factor f+ in K0e3 decay

Author

M. Schafer, M. Wolter, E. Gabathuler, R. Rickenbach, P. Weber, E. Cawley, S. Vlachos, R. Le Gac, P. Bloch, I. Mandić, J. R. Fry, T. Schietinger, M.B. Chertok, M. Mikuž, T. Ruf, F. Blanc, Marc Dejardin, D. Zimmerman, P. Carlson, G. Backenstoss, B. Pagels, T. Nakada, P. Kokkas, A. Apostolakis, F. Montanet, Michael C. Carroll, D. Zavrtanik, P. Pavlopoulos, I. Papadopoulos, K. Jon-And, G. Polivka, A. Haselden, L. Tauscher, Jeffrey Boone Miller, N. Manthos, R. Kreuger, M. Fidecaro, A. Ealet, A. Filipčič, R.W. Hollander, G. Marel, L.A. Schaller, O. Wigger, P. Bargassa, C. Thibault, Mats Danielsson, O. Behnke, C. Eleftheriadis, A. Go, F. Leimgruber, A. Schopper, P.J. Hayman, F. Touchard, W. Fetscher, F. Henry-Couannier, A. Muller, A. Benelli, H.-J. Gerber, C.W.E. van Eijk, C. Touramanis, J. Derre, Elie Aslanides, P.-R. Kettle, R. Gamet, D. Francis, B. L. Roberts, V. Bertin, Centre de Physique des Particules de Marseille (CPPM), Aix Marseille Université (AMU)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Centre de Spectrométrie Nucléaire et de Spectrométrie de Masse (CSNSM), Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), CPLEAR, and Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Sud - Paris 11 (UP11)

Subjects
Physics, Nuclear and High Energy Physics, Particle physics, 010308 nuclear & particles physics, Electroweak interaction, Form factor (quantum field theory), Of the form, 01 natural sciences, Nuclear physics, 0103 physical sciences, [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], 010306 general physics, Particle Physics - Experiment, Energy (signal processing)
Abstract

Neutral-kaon decays to [pi]e[nu] were analysed to determine the q2 dependence of the K0e3 electroweak form factor f+. Based on 365 612 events, this form factor was found to have a linear dependence on q2 with a slope [lambda]+=0.0245±0.0012stat±0.0022syst. http://www.sciencedirect.com/science/article/B6TVN-414F7YB-Y/1/f9d5dd66c27d4f9264d1cec6fac93c68

Published
2000

40. T and CPT violation in the neutral-kaon system

Author

Apostolakis, A., Aslanides, E., Backenstoss, G., Bargassa, P., Behnke, O., Benelli, A., Bertin, V., Blanc, F., Bloch, P., Carlson, P., Carroll, M., Cawley, E., Chertok, M.B., Danielsson, M., Dejardin, M., Derre, J., Ealet, A., Eleftheriadis, C., Fetscher, W., Fidecaro, M., Filipcic, A., Francis, D., Fry, J., Gabathuler, E., Gamet, R., Gerber, H.J., Go, A., Haselden, A., Hayman, P.J., Henry-Couannier, F., Hollander, R.W., Jon-And, K., Kettle, P.R., Kokkas, P., Kreuger, R., Le Gac, R., Leimgruber, F., Mandic, I., Manthos, N., Marel, G., Mikuz, M., Miller, J., Montanet, F., Müller, A., Nakada, T., Pagels, B., Papadopoulos, I., Pavlopoulos, P., Polivka, G., Rickenbach, R., Roberts, B.L., Ruf, T., Schafer, M., Schaller, L.A., Schietinger, T., Schopper, A., Tauscher, L., Thibault, C., Touchard, F., Touramanis, C., Van Eijk, C.W.E., Vlachos, S., Weber, P., Wigger, O., Wolter, M., Zavrtanik, D., Zimmerman, D., Centre de Physique des Particules de Marseille (CPPM), Aix Marseille Université (AMU)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Centre de Spectrométrie Nucléaire et de Spectrométrie de Masse (CSNSM), Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), CPLEAR, and Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Sud - Paris 11 (UP11)

Subjects
[PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex]
Published
1999

41. CPLEAR results on CP, T and CPT violation parameters

Author

Mikuz, M., Apostolakis, A., Aslanides, E., Backenstoss, G., Bargassa, P., Behnke, O., Benelli, A., Bertin, V., Blanc, F., Bloch, P., Carlson, P.J., Carroll, M., Cawley, E., Chertok, M.B., Danielsson, M., Dejardin, M., Derre, J., Ealet, A., Eleftheriadis, C., Fetscher, W., Fidecaro, M., Filipcic, A., Francis, D., Fry, J.R., Gabathuler, E., Gamet, R., Gerber, H.J., Go, A., Haselden, A., Hayman, P.J., Henry-Couannier, F., Hollander, R.W., Jon-And, K., Kettle, P.R., Kokkas, P., Kreuger, R., Le Gac, R., Leimgruber, F., Mandic, I., Manthos, N., Marel, G., Marotte, P., Miller, J., Montanet, F., Müller, A., Nakada, T., Pagels, B., Papadopoulos, I.M., Pavlopoulos, P., Polivka, G., Rickenbach, R., Roberts, B.L., Ruf, T., Sakelliou, L., Schafer, M., Schopper, A., Tauscher, L., Thibault, C., Touchard, F., Touramanis, C., Van Eijk, C.W.E., Vlachos, S., Weber, P., Wigger, O., Wolter, M., Zavrtanik, D., Zimmerman, D., Centre de Spectrométrie Nucléaire et de Spectrométrie de Masse (CSNSM), Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Sud - Paris 11 (UP11), G.V. Fedotovich, S.I. Redin, and CPLEAR

Subjects
[PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex]
Published
1999

42. Results from CPLEAR on tests of CP, T and CPT using $K^0$ and $\bar K^0$

Author

Angelopoulos, A., Apostolakis, A., Aslanides, E., Backenstoss, G., Bargassa, P., Behnke, O., Benelli, A., Bertin, V., Blanc, F., Bloch, P., Carlson, P., Carroll, M., Cawley, E., Chertok, M.B., Danielsson, M., Dejardin, M., Derre, J., Ealet, A., Eleftheriadis, C.A., Faravel, L., Fetscher, W., Fidecaro, M., Filipcic, A., Francis, D., Fry, J., Gabathuler, E., Gamet, R., Gerber, H.J., Go, A., Haselden, A., Hayman, P.J., Henry-Couannier, F., Hollander, R.W., Jon-And, K., Kettle, P.R., Kokkas, P., Kreuger, R., Le Gac, R., Leimgruber, F., Mandic, I., Manthos, N., Marel, G., Mikuz, M., Miller, J., Montanet, F., Müller, A., Nakada, T., Pagels, B., Papadopoulos, I., Pavlopoulos, P., Polivka, G., Rickenbach, R., Roberts, B.L., Ruf, T., Schafer, M., Schaller, L.A., Schietinger, T., Schopper, A., Tauscher, L., Thibault, C., Touchard, F., Touramanis, C., van Eijk, C.W.E., Vlachos, S., Weber, P., Wigger, O., Wolter, M., Zavrtanik, D., Zimmerman, D., Centre de Physique des Particules de Marseille (CPPM), Aix Marseille Université (AMU)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Centre de Spectrométrie Nucléaire et de Spectrométrie de Masse (CSNSM), Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), C.A. Dominguez, R.D. Viollier, CPLEAR, Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Sud - Paris 11 (UP11), and Lorgeril, Jocelyne

Subjects
[PHYS.HEXP] Physics [physics]/High Energy Physics - Experiment [hep-ex], [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex]
Published
1999

43. K$^0$-$\bar K^0$ mass and decay-width differences: CPLEAR evaluation

Author

Angelopoulos, A., Apostolakis, A., Aslanides, E., Backenstoss, G., Bargassa, P., Behnke, O., Benelli, A., Bertin, V., Blanc, F., Bloch, P., Carlson, P., Carroll, M., Cawley, E., Chertok, M.B., Danielsson, M., Dejardin, M., Derre, J., Ealet, A., Eleftheriadis, C.A., Fetscher, W., Fidecaro, M., Filipcic, A., Francis, D., Fry, J., Gabathuler, E., Gamet, R., Gerber, H.J., Go, A., Haselden, A., Hayman, P.J., Henry-Couannier, F., Hollander, R.W., Jon-And, K., Kettle, P.R., Kokkas, P., Kreuger, R., Le Gac, R., Leimgruber, F., Mandic, I., Manthos, N., Marel, G., Mikuz, M., Miller, J., Montanet, F., Müller, A., Nakada, T., Pagels, B., Papadopoulos, I., Pavlopoulos, P., Polivka, G., Rickenbach, R., Roberts, B.L., Ruf, T., Schafer, M., Schaller, L.A., Schietinger, T., Schopper, A., Tauscher, L., Thibault, C., Touchard, F., Touramanis, C., Van Eijk, C.W.E., Vlachos, S., Weber, P., Wigger, O., Wolter, M., Zavrtanik, D., Zimmerman, D., Centre de Physique des Particules de Marseille (CPPM), Aix Marseille Université (AMU)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Centre de Spectrométrie Nucléaire et de Spectrométrie de Masse (CSNSM), Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Sud - Paris 11 (UP11), CPLEAR, and Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)

Subjects
[PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex]
Published
1999

44. A determination of the CP violation parameter $\eta_{\pm}$ from the decay of strangeness-tagged neutral kaons

Author

Apostolakis, A., Aslanides, E., Backenstoss, G., Bargassa, P., Behnke, O., Benelli, A., Bertin, V., Blanc, F., Bloch, P., Carlson, P., Carroll, M., Cawley, E., Chertok, M.B., Danielsson, M., Dejardin, M., Derre, J., Ealet, A., Eleftheriadis, C., Fetscher, W., Fidecaro, M., Filipcic, A., Francis, D., Fry, J., Gabathuler, E., Gamet, R., Gerber, H.J., Go, A., Haselden, A., Hayman, P.J., Henry-Couannier, F., Hollander, R.W., Jon-And, K., Kettle, P.R., Kokkas, P., Kreuger, R., Le Gac, R., Leimgruber, F., Mandic, I., Manthos, N., Marel, G., Mikuz, M., Miller, J., Montanet, F., Müller, A., Nakada, T., Pagels, B., Papadopoulos, I., Pavlopoulos, P., Polivka, G., Rickenbach, R., Roberts, B.L., Ruf, T., Sakeliou, L., Schafer, M., Schaller, L.A., Schietinger, T., Schopper, A., Tauscher, L., Thibault, C., Touchard, F., Touramanis, C., van Eijk, C.W.E., Vlachos, S., Weber, P., Wigger, O., Wolter, M., Yeche, C., Zavrtanik, D., Zimmerman, D., Lorgeril, Jocelyne, Centre de Physique des Particules de Marseille (CPPM), Aix Marseille Université (AMU)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Centre de Spectrométrie Nucléaire et de Spectrométrie de Masse (CSNSM), Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Sud - Paris 11 (UP11), CPLEAR, and Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)

Subjects
[PHYS.HEXP] Physics [physics]/High Energy Physics - Experiment [hep-ex], [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex]
Published
1999

45. Pion correlations and resonance effects in $\bar pp$ annihilation at rest to $2\pi^+ 2\pi^- \pi^0$

Author

Apostolakis, A., Aslanides, E., Backenstoss, G., Bargassa, P., Behnke, O., Benelli, A., Bertin, V., Blanc, F., Bloch, P., Carlson, P., Carroll, M., Cawley, E., Chertok, M.B., Danielsson, M., Dejardin, M., Derre, J., Ealet, A., Eleftheriadis, C., Faravel, L., Fetscher, W., Fidecaro, M., Filipcic, A., Francis, D., Fry, J., Gabathuler, E., Gamet, R., Gerber, H.J., Go, A., Haselden, A., Hayman, P.J., Henry-Couannier, F., Hollander, R.W., Jon-And, K., Kettle, P.R., Kokkas, P., Kreuger, R., Le Gac, R., Leimgruber, F., Mandic, I., Manthos, N., Marel, G., Mikuz, M., Miller, J., Montanet, F., Müller, A., Nakada, T., Pagels, B., Papadopoulos, I., Pavlopoulos, P., Polivka, G., Rickenbach, R., Roberts, B.L., Ruf, T., Sakeliou, L., Schafer, M., Schaller, L.A., Schietinger, T., Schopper, A., Tauscher, L., Thibault, C., Touchard, F., Touramanis, C., Van Eijk, C.W.E., Vlachos, S., Weber, P., Wigger, O., Wolter, M., Zavrtanik, D., Zimmerman, D., Locher, M.P., Markushin, V.E., Centre de Physique des Particules de Marseille (CPPM), Aix Marseille Université (AMU)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Centre de Spectrométrie Nucléaire et de Spectrométrie de Masse (CSNSM), Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Sud - Paris 11 (UP11), CPLEAR, and Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)

Subjects
[PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex]
Published
1999

46. Pion correlations and resonance effects in $\bar pp$ annihilation at rest

Author

Angelopoulos, A., Apostolakis, A., Aslanides, E., Backenstoss, G., Bargassa, P., Behnke, O., Benelli, A., Bertin, V., Blanc, F., Bloch, P., Carlson, P., Carroll, M., Cawley, E., Chertok, M.B., Danielsson, M., Dejardin, M., Derre, J., Ealet, A., Eleftheriadis, C.A., Faravel, L., Fetscher, W., Fidecaro, M., Filipcic, A., Francis, D., Fry, J., Gabathuler, E., Gamet, R., Gerber, H.J., Go, A., Haselden, A., Hayman, P.J., Henry-Couannier, F., Hollander, R.W., Jon-And, K., Kettle, P.R., Kokkas, P., Kreuger, R., Le Gac, R., Leimgruber, F., Mandic, I., Manthos, N., Marel, G., Mikuz, M., Miller, J., Montanet, F., Müller, A., Nakada, T., Pagels, B., Papadopoulos, I., Pavlopoulos, P., Polivka, G., Rickenbach, R., Roberts, B.L., Ruf, T., Schafer, M., Schaller, L.A., Schietinger, T., Schopper, A., Tauscher, L., Thibault, C., Touchard, F., Touramanis, C., van Eijk, C.W.E., Vlachos, S., Weber, P., Wigger, O., Wolter, M., Zavrtanik, D., Zimmerman, D., Centre de Physique des Particules de Marseille (CPPM), Aix Marseille Université (AMU)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Centre de Spectrométrie Nucléaire et de Spectrométrie de Masse (CSNSM), Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), CPLEAR, Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Sud - Paris 11 (UP11), and Lorgeril, Jocelyne

Subjects
[PHYS.HEXP] Physics [physics]/High Energy Physics - Experiment [hep-ex], [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex]
Published
1998

47. Contribution of CPLEAR to the physics of the neutral-kaon system

Author

Angelopoulos, A., Apostolakis, A., Aslanides, E., Backenstoss, G., Bargassa, P., Behnke, O., Benelli, A., Bertin, V., Blanc, F., Bloch, P., Carlson, P., Carroll, M., Cawley, E., Chertok, M. B., Mats Danielsson, Dejardin, M., Derre, J., Ealet, A., Eleftheriadis, C. A., Faravel, L., Fetscher, W., Fidecaro, M., Filipčič, A., Francis, D., Fry, J., Gabathuler, E., Gamet, R., Gerber, H. -J, Go, A., Haselden, A., Hayman, P. J., Henry-Couannier, F., Hollander, R. W., Jon-And, K., Kettle, P. -R, Kokkas, P., Kreuger, R., Le Gac, R., Leimgruber, F., Mandić, I., Manthos, N., Marel, G., Mikuž, M., Miller, J., Montanet, F., Muller, A., Nakada, T., Pagels, B., Papadopoulos, I., Pavlopoulos, P., Polivka, G., Rickenbach, R., Roberts, B. L., Ruf, T., Schäfer, M., Schaller, L. A., Schietinger, T., Schopper, A., Schune, P., Tauscher, L., Thibault, C., Touchard, F., Touramanis, C., Eijk, C. W. E., Vlachos, S., Weber, P., Wigger, O., Wolter, M., Zavrtanik, D., Zimmerman, D., Centre de Physique des Particules de Marseille (CPPM), Aix Marseille Université (AMU)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Centre de Spectrométrie Nucléaire et de Spectrométrie de Masse (CSNSM), Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), CPLEAR, and Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Sud - Paris 11 (UP11)

Subjects
[PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex]
Published
1998

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

Author

Miller, J.P., Angelopoulos, A., Apostolakis, A., Aslanides, E., Backenstoss, G., Bargassa, P., Behnke, O., Benelli, A., Bertin, V., Blanc, F., Bloch, P., Carlson, P., Carroll, M., Carvalho, J., Cawley, E., Chertok, M.B., Danielsson, M., Dejardin, M., Derre, J., Ealet, A., Eleftherjadis, C., Faravel, L., Fetscher, W., Fidecaro, M., Filipcic, A., Francis, D., Fry, J., Gabathuler, E., Gamet, R., Gerber, H.J., Go, A., Haselden, A., Hayman, P.J., Henry-Couannier, F., Hollander, R.W., Jon And, K., Kettle, P.R., Kokkas, P., Kreuger, R., Le Gac, R., Leimgruber, F., Mandic, I., Manthos, N., Marel, G., Mikuz, M., Miller, J., Montanet, F., Müller, A., Nakada, T., Pagels, B., Papadopoulos, I., Pavlopoulos, P., Polivka, G., Rickenbach, R., Roberts, B.L., Ruf, T., Schafer, M., Schaller, L., Schietinger, T., Schopper, A., Tauscher, L., Thibault, C., Touchard, F., Touramanis, C., Van Eijk, C.W.E., Vlachos, S., Weber, P., Wigger, O., Wolter, M., Zavrtanik, D., Zimmerman, D., Ellis, J., Lopez, J.L., Mavroumatis, N.E., Nanopoulos, D.V., Centre de Physique des Particules de Marseille (CPPM), Aix Marseille Université (AMU)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Centre de Spectrométrie Nucléaire et de Spectrométrie de Masse (CSNSM), Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Sud - Paris 11 (UP11), CPLEAR, and Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)

Subjects
[PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex]
Published
1998

49. Study of CP, T and CPT symmetries in the neutral kaon system at LEAR

Author

Le Gac, R., Angelopoulos, A., Apostolakis, A., Aslanides, E., Backenstoss, G., Behnke, O., Benelli, A., Bertin, V., Blanc, F., Bloch, P., Carlson, P., Carroll, M., Cawley, E., Chertok, M B., Danielsson, M., Dejardin, M., Derre, J., Duclos, J., Ealet, A., Eleftheriadis, C., Faravel, L., Fassnacht, P., Fetscher, W., Fidecaro, M., Filipcic, A., Francis, D., Fry, J., Gabathuler, E., Gamet, R., Gerber, H J., Go, A., Haselden, A., Hayman, P J., Henry-Couannier, F., Hollander, R W., Hubert, E., Jon-And, K., Kettle, P R., Kokkas, P., Kreuger, R., Leimgruber, F., Mandic, I., Manthos, N., Marel, G., Mikuz, M., Miller, J., Montanet, F., Müller, A., Nakada, T., Pagels, B., Papadopoulos, I., Pavlopoulos, P., Polivka, G., Rickenbach, R., Roberts, B L., Ruf, T., Schafer, M., Schaller, L A., Schietinger, T., Schopper, A., Tauscher, L., Thibault, C., Touchard, F., Touramanis, C., van Eijk, C W E., Vlachos, S., Weber, P., Wigger, O., Wolter, M., Zavrtanik, D., Zimmerman, D., Centre de Physique des Particules de Marseille (CPPM), Aix Marseille Université (AMU)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), CPLEAR, and Damoiseaux, Magali

Subjects
[PHYS.HEXP] Physics [physics]/High Energy Physics - Experiment [hep-ex], [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex]
Published
1998

50. A determination of the CPT violation parameter Re($\delta$) from the semileptonic decay of strangeness-tagged neutral kaons

Author

Angelopoulos, A., Apostolakis, A., Aslanides, E., Backenstoss, G., Bargassa, P., Behnke, O., Benelli, A., Bertin, V., Blanc, F., Bloch, P., Carlson, P., Carroll, M., Cawley, E., Chertok, M B., Danielsson, M., Dejardin, M., Derre, J., Ealet, A., Eleftheriadis, C., Faravel, L., Fetscher, W., Fidecaro, M., Filipcic, A., Francis, D., Fry, J., Gabathuler, E., Gamet, R., Gerber, H J., Go, A., Haselden, A., Hayman, P J., Henry-Couannier, F., Hollander, R W., Jon-And, K., Kettle, P R., Kokkas, P., Kreuger, R., Le Gac, R., Leimgruber, F., Mandic, I., Manthos, N., Marel, G., Mikuz, M., Miller, J., Montanet, F., Nakada, T., Pagels, B., Papadopoulos, I., Pavlopoulos, P., Polivka, G., Rickenbach, R., Roberts, B L., Ruf, T., Schdfer, M., Schaller, L A., Schietinger, T., Schopper, A., Tauscher, L., Thibault, C., Touchard, F., Touramanis, C., Van Eijk, C W E., Vlachos, S., Wigger, O., Wolter, M., Zavrtanik, D., Zimmerman, D., Centre de Physique des Particules de Marseille (CPPM), Aix Marseille Université (AMU)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Centre de Spectrométrie Nucléaire et de Spectrométrie de Masse (CSNSM), Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Sud - Paris 11 (UP11), CPLEAR, and Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)

Subjects
[PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], High Energy Physics::Experiment
Abstract

We have improved by two orders of magnitude the limit currently available for the CPT violation parameter \red . To this purpose we have analyzed the full sample of neutral-kaon decays to \semi\ recorded in the CPLEAR experiment, where the strangeness of the neutral kaons was tagged at production and decay time. An appropriate function of the measured decay rates, including information from the analysis of \pip\pim\ decay channel, gives directly \red . The result $\red = (3.0 \pm 3.3_\mathrm{{stat}} \pm 0.6_\mathrm{{syst}}) \times 10^{-4}$ is compatible with zero. Values for the parameters $\imd$, $\rexm$ and $\imxp$ were also obtained.

Published
1998

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