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Start Over Author "Wischnewski, R" Journal zeitschrift fur physik c particles and fields
50 results on '"Wischnewski, R"'

1. Multiplicity structure of inclusive diffraction in À+ p andK + p interactions at 250 GeV/c

Author

Begalli, M., Botterweck, F., Boettcher, H., Charlet, M., Chliapnikov, P. V., De Wolf, E. A., Dziunikowska, K., Endler, A. M. F., Eskreys, A., Friebel, W., Gulkanyan, G. R., Garutchava, Z. S., Kittel, W., Megrabyan, S. S., Naumann, Th., Olkiewicz, K., Roloff, H. E., Tchikilev, O. G., Tikhonova, L. A., Tomaradze, A. G., Verbeure, F., Wischnewski, R., Zotkin, S. A., and EHS/NA22 Collaboration

Published
1992
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2. Neutral strange particle production inK + andπ + collisions with Al and Au nuclei at 250 GeV/c

Author

Botterweck, F., Charlet, M., Chliapnikov, P. V., De Roeck, A., De Wolf, E. A., Dziunikowska, K., Ermolov, P. E., Eskreys, A., Garutchava, Z. C., Gulkanyan, G., Hakobyan, R. Sh., Haupt, T., Kaleba, K., Kittel, W., Kisielewska, D., Michalowska, A. B., Nikolaenko, V. I., Olkiewicz, K., Ronjin, V. M., Tomaradze, A. G., Verbeure, F., Wischnewski, R., Zotkin, S. A., and EHS-NA22 Collaboration

Published
1992
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3. Study of intranuclear collision effects in interactions ofK +/π + mesons with Al and Au nuclei at 250 GeV/c

Author

Agababyan, N. M., Ajinenko, I. V., Botterweck, F., Charlet, M., Chliapnikov, P. V., De Wolf, E. A., Dziunikowska, K., Endler, A. M., Gulkanyan, G., Hakobyan, R. Sh., Karamyan, J. K., Kittel, W., Kisielewska, D., Levchenko, B. B., Megrabyan, S. S., Olkiewicz, K., Rizatdinova, F., Shabalina, L., Verbeure, F., Wischnewski, R., and EHS-NA22 Collaboration

Published
1992
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4. π 0 andη meson production inπ + p andK + p collisions at 250 GeV/c

Author

Atayan, M. R., Botterweck, F., Charlet, M., Chliapnikov, P. V., De Roeck, A., De Wolf, E. A., Dziunikowska, K., Endler, A. M., Fisyak, Yu. V., Gevorkyan, G. V., Kisielewska, D., Kittel, W., Olkiewicz, K., Rohjin, V. M., Shabalina, E. K., Sotnikova, N. A., Tikhonova, L. A., Tchikilev, O. G., Verbeure, F., Wischnewski, R., Zotkin, S. A., and EHS/NA22 Collaboration

Published
1992
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5. Direct soft photon production inK + p andπ + p interactions at 250 GeV/c

Author

Botterweck, F., Chapkin, M. M., Charlet, M., Chliapnikov, P. V., De Roeck, A., De Wolf, E. A., Dziunikowska, K., Eskreys, A., Garutchava, Z. C., Gulkanyan, G. R., Haupt, T., Kishinevskaya, L. P., Kittel, W., Nikolaenko, I. V., Olkiewicz, K., Ronjin, V. M., Smirnova, L. N., Tchikilev, O. G., Tikhonova, L. A., Uvarov, V. A., Verbeure, F., Wischnewski, R., Zotkin, S. A., and EHS-NA22 Collaboration

Published
1991
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6. Rapidity and transverse momentum structure inπ + andK + collisions with Al and Au nuclei at 250 GeV/c

Author

Agababyan, N. M., Ajinenko, I. V., Belokopytov, Yu. A., Boettcher, H., Botterweck, F., Charlet, M., Chliapnikov, P. V., Crijns, F., De Roeck, A., De Wolf, E. A., Dziunikowska, K., Endler, A. M. F., Eskreys, A., Garutchava, Z. C., van Hal, P., Hakobyan, R. Sh., Haupt, T., Kittel, W., Kisielewska, D., Levchenko, B. B., Machowski, B., Meijers, F., Michałowska, A. B., Nikolaenko, V. I., Olkiewicz, K., Rizatdinova, F. K., Ronjin, V. M., Rybin, A. M., Saarikko, H. M. T., Scholten, L., Smirnova, L. N., Stepaniak, J., Tchikilev, O. G., Uvarov, V. A., Verbeure, F., Wischnewski, R., and EHS-NA22 Collaboration

Published
1991
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7. A study of double pomeron exchange inπ + p andK + p interactions at 250 GeV/c

Author

Atayan, M. R., Ajinenko, I. V., Belokopytov, Yu. A., Böttcher, H., Botterweck, F., Chapkin, M. M., Chliapnikov, P. V., Crijns, F., De Roeck, A., De Wolf, E. A., Dziunikowska, K., Endler, A. M. F., Garutchava, Z. G., Gulkanyan, G. R., van Hal, P., Haupt, T., Karamyan, J. K., Kirakosyan, Z. A., Kisielewska, D., Kittel, W., Megrabyan, S. S., Meijers, F., Michałowska, A. B., Nikolaenko, I. V., Olkiewicz, K., Ronjin, V. M., Rybin, A. M., Shabalina, E. K., Scholten, L., Tchikilev, O. G., Tomaradze, A. G., Tikhonova, L. A., Uvarov, V. A., Verbeure, F., Wischnewski, R., Zotkin, S. A., and EHS/NA22 Collaboration

Published
1991
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8. Collective characteristics of hadron systems produced in beam fragmentation of π+ p collisions at 250 GeV/c

Author

Ajinenko, I. V., Białkowska, H., Böttcher, H., Botterweck, F., Crijns, F., De Roeck, A., De Wolf, E. A., Dziunikovska, K., Endler, A. M. F., Ermolov, P. F., Garutchava, Z. C., Golubkov, Y. A., Grigoryan, N. G., Gulkanyan, G. R., van Hal, P., Haupt, T., Karamyan, J. K., Kirakosyan, Z. A., Kisielewska, D., Kittel, W., Megrabyan, S. S., Meijers, F., Michałowska, A. B., Olkiewicz, K., Petrovikh, L. P., Rybin, A. M., Saarikko, H., Scholten, L., Shabalina, E. K., Verbeure, F., Wischnewski, R., Zotkin, S. A., and EHS/NA22 Collaboration

Published
1991
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9. Rapidity correlations in π+ p, K + p andpp interactions at 250 GeV/c

Author

Aivazyan, V. V., Ajinenko, I. V., Belokopytov, Yu. A., Białkowska, H., Bravina, L. V., Böttcher, H., Botterweck, F., Chliapnikov, P. V., Crijns, F., De Roeck, A., De Wolf, E. A., Dziunikowska, K., Endler, A. M. F., Garutchava, Z. G., Grigoryan, N. G., van Hal, T., Haupt, T., Kisielewska, D., Kittel, W., Meijers, F., Michałowska, A. B., Nikolaenko, V. I., Olkiewicz, K., Petrovikh, L. P., Rizatdinova, F. K., Ronjin, V. M., Rybin, A. M., Scholten, L., Shabalina, E. K., Smirnova, L. N., Sotnikova, N. A., Tchikilev, O. G., Tikhonova, L. A., Tomaradze, A. G., Uvarov, V. A., Verbeure, R., Wischnewski, R., and EHS/NA22 Collaboration

Published
1991
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10. Triple Regge analysis of inclusiveΛ production inK + p and π+ p interactions at 250 GeV/c

Author

Agababyan, N. M., Belokopytov, Yu. A., Böttcher, H., Botterweck, F., Chapkin, M. M., Chliapnikov, P. V., Crijns, F., De Roeck, A., De Wolf, E. A., Dziunikowska, K., Endler, A. M. F., Garutchava, Z. G., van Hal, P., Haupt, T., Kisielewska, D., Kittel, W., Levchenko, B. B., Megrabyan, S. S., Meijers, F., Michałowska, A. B., Nikolaenko, V. I., Olkiewicz, K., Rizatdinova, F. K., Ronjin, V. M., Scholten, L., Shabalina, E. K., Sotnikova, N. A., Tchikilev, O. G., Uvarov, V. A., Verbeure, F., Wischnewski, R., and EHS/NA22 Collaboration

Published
1991
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11. Factorial moments and correlations in meson-nucleus interactions at 250 GeV/c

Author

Botterweck, F., Charlet, M., Chliapnikov, P. V., De Roeck, A., De Wolf, E. A., Dziunikowska, K., Endler, A. M. F., Eskreys, A., Gavrjusev, V. G., Hakobyan, R. S., Haupt, T., Karamyan, J. K., Kaleba, K., Kisielewska, D., Kittel, W., Levchenko, B. B., Michałowska, A. B., Olkiewicz, K., Shabalina, E. S., Tchikilev, O. G., Uvarov, V. A., Verbeure, F., Wischnewski, R., and EHS-NA22 Collaboration

Published
1991
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12. Negative binomials and multiplicity distributions in 250 GeV/cK + and π+ interactions on Al and Au nuclei

Author

Ajinenko, I. V., Belokopytov, Yu. A., Bialkowska, H., Boettcher, H., Botterweck, F., Charlet, M., Chliapnikov, P. V., Crijns, F., De Roeck, A., De Wolf, D. A., Dziunikowska, K., Endler, A. M. F., Eskreys, A., Garutchava, Z. C., Golubkov, Y. A., Gulkanyan, G. R., van Hal, P., Hakobyan, R. Sh., Haupt, T., Kittel, W., Kisielewska, D., Levchenko, B. B., Machowski, B., Meijers, F., Michałowska, A. B., Nikolaenko, V. I., Olkiewicz, K., Pöllänen, R., Ronjin, V. M., Rybin, A. M., Saarikko, H. M. T., Scholten, L., Smirnova, L. N., Tchikilev, O. G., Uvarov, V. A., Verbeure, F., Wischnewski, R., and EHS-NA22 Collaboration

Published
1990
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13. Experimental results on proton diffractive dissociation: Study of the quark-diquark pomeron coupling

Author

Asai, M., Bailly, J. L., Böttcher, H., Bruyant, F., Caso, C., Chiba, Y., Dibon, H., Epp, B., Ferrando, A., Fontanelli, F., Ganguli, S. N., Gémesy, T., Hamatsu, R., Hidas, P., Hirose, T., Hrubec, J., Kageya, T., Khalatyan, N., Kistenev, E., Kita, I., Kitamura, S., Kubik, V., MacNaughton, J., Markytan, M., Matsumoto, S., Mittra, I. S., Montanet, L., Neuhofer, G., Pinter, G., Porth, P., Rodrigo, T., Singh, J., Squarcia, S., Takahashi, K., Tanaka, R., Tikhonova, L. A., Trevisan, U., Wischnewski, R., Yamagata, T., Zotkin, S. A., and NA23, EHS-RCBC Collaboration

Published
1990
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14. Neutral kaon production inK + p and π+ p interactions at 250 GeV/c

Author

Ajinenko, I. V., Albert, L., Belokopytov, Yu. A., Białkowska, H., Böttcher, H., Botterweck, F., Chliapnikov, P. V., Crijns, F., De Roeck, A., De Wolf, E. A., Dziunikowska, K., Endler, A. M. F., Garutchava, Z. C., Gavrjusev, U. G., Hacobyan, R. C., van Hal, P., Haupt, T., Kisielewska, D., Kittel, W., Megrabyan, S. S., Meijers, F., Michałowska, A. B., Nikolaenko, V. I., Olkiewicz, K., Ronjin, V. M., Rybin, A. M., Saarikko, H. M. T., Scholten, L., Shabalina, E. K., Tchikilev, O. G., Uvarov, V. A., Verbeure, F., Verbist, R., Wischnewski, R., Yarba, Yu. V., and EHS/NA22 Collaboration

Published
1990
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15. Inclusive production of vector mesons in π+ p interactions at 250 GeV/c

Author

Agababyan, N. M., Ajinenko, I. V., Belokopytov, Yu. A., Belous, K. S., Boettcher, H., Botterweck, F., Chapkin, M. M., Chliapnikov, P. V., Crijns, F., De Roeck, A., De Wolf, E. A., Dziunikowska, K., Endler, A. M. F., Eskreys, A., Garutchava, Z. C., van Hal, P., Haupt, T., Katargin, A. I., Kittel, W., Megrabyan, S. S., Meijers, F., Michałowska, A. B., Nikolaenko, V. I., Olkiewicz, K., Ronjin, V. M., Rosmalen, R., Saarikko, H. M. T., Scholten, L., Shabalina, E. K., Stepaniak, J., Tchikilev, O. G., Uvarov, V. A., Verbeure, F., Wischnewski, R., Zotkin, S. A., Yarba, Y. V., and EHS-NA22 Collaboration

Published
1990
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16. Forward-backward multiplicity correlations in σ+ p,K + p andpp collisions at 250 GeV/c

Author

Aivazyan, V. V., Ajinenko, I. V., Belokopytov, Yu. A., Bosetti, P. C., Böttcher, H., Botterweck, F., Chliapnikov, P. V., Crijns, F., De Roeck, A., De Wolf, E. A., Driever, Th., Dziunikowska, K., Eskreys, A., Friebel, W., Garutchava, Z. C., Gavrjusev, V. G., Graessler, H., van Hal, P., Haupt, T., Kittel, W., Megrabyan, S. S., Meijers, F., Michałowska, A. B., Nikolaenko, V. I., Oliveira, L. C. S., Olkiewicz, K., Petrovikh, L. P., Riipinen, E., Ronjin, V. M., Rybin, A. M., Saarikko, H. M. T., Schmitz, W., Scholten, L., Schulte, R., Tchikilev, O. G., Tikhonova, L. A., Tomaradze, A. G., Uvarov, V. A., Verbeure, F., Wischnewski, R., Wróblewski, A., Zotkin, S. A., and NA22 Collaboration

Published
1989
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17. Charged particle production inK + p, π p andpp interactions at 250 GeV/c

Author

Adamus, M., Ajinenko, I. V., Atayan, M. R., Belokopytov, Yu. A., Boettcher, H., Botterweck, F., Chliapnikov, P. V., Crijns, F., De Roeck, A., De Wolf, E. A., Dziunikowska, K., Endler, A. M. F., Ermolov, P. F., Gevorkyan, G. V., Graessler, H., van Hal, P., Haupt, T., Kittel, W., Kisielewska, D., Kurnosenko, A. I., Meijers, F., Michalowska, A. B., Nikolaenko, V. I., Oliveira, L. C. S., Olkiewicz, K., Roloff, H. E., Ronjin, V. M., Rybin, A. M., Saarikko, H. M. T., Saarikko, Y. T. M., Schmitz, W., Scholten, L., Shabalina, E. K., Shakhbazyan, V. V., Tchikilev, O. G., Tomaradze, A. G., Uvarov, V. A., Verbeure, F., Wischnewski, R., Wróblewski, A., Zotkin, S. A., and EHS-NA22 Collaboration

Published
1988
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18. Inclusive meson resonance production inK + p interactions at 250 GeV/c

Author

Agababyan, N. M., Ajinenko, I. V., Belokopytov, Yu. A., Boettcher, H., Chliapnikov, P. V., Crijns, F., De Roeck, A., De Wolf, E. A., Dziunikowska, K., Garutchava, Z. C., Gavrjusev, V. G., Graessler, H., Gulkanyan, G. R., van Hal, P., Haupt, T., Kittel, W., Kisielewska, D., Meijers, F., Michalowska, A. B., Nikolaenko, V. I., Oliveira, L. C. S., Olkiewicz, K., Ronjin, V. M., Rybin, A. M., Saarikko, H. M. T., Saarikko, Y. T. M., Schmitz, W., Scholten, L., Tchikilev, O. G., Tikhonova, L. A., Tomaradze, A. G., Uvarov, V. A., Verbeure, F., Wischnewski, R., Wróblewski, A., Zotkin, S. A., and EHS-NA22 Collaboration

Published
1989
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19. Single diffraction dissociation inπ + andK + p interactions at 250 GeV/c

Author

Adamus, M., Ajinenko, I. V., Almeida, Jr., F. M. L., Belokopytov, Yu. A., Böttcher, H., Chliapnikov, P. V., Crijns, F., De Roeck, A., De Wolf, E. A., Dziunikowska, K., Endler, A. M. F., Eskreys, A., Friebel, W., Garutchava, Z. S., Graessler, H., Hacobyan, R. S., van Hal, P., Haupt, T., Kittel, W., Kurnosenko, A. I., Megrabyan, S. S., Meijers, F., Michalowska, A. B., Naumann, Th., Nikolaenko, V. I., Oliveira, L. C. S., Olkiewicz, K., Riipinen, E., Roloff, H. E., Ronjin, V. M., Rybin, A. M., Saarikko, H. M. T., Schmitz, W., Scholten, L., Sotnikova, N. A., Stepaniak, J., Tchikilev, O. G., Tikhonova, L. A., Tomaradze, A. G., Utochkin, B. A., Uvarov, V. A., Verbeure, F., Wischnewski, R., Zotkin, S. A., and EHS/NA22 Collaboration

Published
1988
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20. Phase space dependence of the multiplicity distribution in π+ andpp collisions at 250 GeV/c

Author

Adamus, M., Agababyan, N. M., Ajinenko, I. V., Belokopytov, Yu. A., Białkowska, H., Böttcher, H., Chliapnikov, P. V., Crijns, F., De Roeck, A., De Wolf, E. A., Dziunikowska, K., Endler, A. M. F., Friebel, W., Graessler, H., van Hal, P., Karamyan, J. K., Kisielewska, D., Kittel, W., Kurnosenko, A. I., Levchenko, B. B., Meijers, F., Merk, M., Michałowska, A. B., Nikolaenko, V. I., Oliveira, L. C. S., Olkiewicz, K., Ronjin, V. M., Rybin, A. M., Saarikko, H. M. T., Saarikko, Y. T. M., Schmitz, W., Scholten, L., Sotnikova, N. A., Stepaniak, J., Tchikilev, O. G., Tikhonova, L. A., Uvarov, V. A., Verbeure, F., Wischnewski, R., and EHS/NA 22 Collaboration

Published
1988
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21. Strange and non-strange baryon production in π+ p andK + p interactions at 250 GeV/c

Author

Ajinenko, I. V., Atayan, M. R., Belokopytov, Yu. A., Boettcher, H., Botterweck, F., Chliapnikov, P. V., Crijns, F., de Roeck, A., De Wolf, E. A., Dziunikowska, K., Endler, A. M. F., Eskreys, A., Garutchava, Z. C., Golubkov, Yu. A., Grigoryan, N. G., van Hal, P., Haupt, T., Kittel, W., Levchenko, B. B., Meijers, F., Michalowska, A. B., Nikolaenko, V. I., Olkiewicz, K., Pöllänen, R., Petrovikh, L. P., Ronjin, V. M., Rosmalen, R., Rosmalen, R., Rybin, A. M., Saarikko, H. M. T., Scholten, L., Sotnikova, N. N., Stepaniak, J., Tchikilev, O. G., Tomaradze, A. G., Uvarov, V. A., Verbeure, F., Wischnewski, R., and EHS-NA 22 Collaboration

Published
1989
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22. Multiplicity distribution inK + Al andK + Au collisions at 250 GeV/c and a test of the multiple collision model

Author

Ajinenko, I. V., Belokopytoy, Yu. A., Bialkowska, H., Boettcher, H., Bottorweck, F., Chliapnikov, P. V., Crijns, F., de Roeck, A., de Wolf, E. A., Dziunikowska, K., Endler, A. M. F., Eskreys, A., Garutchava, Z. C., Golubkov, Y., Graessler, H., Gulkanyan, G. R., van Hal, P., Hakobyan, R. Sh., Haupt, T., Kittel, W., Kisielewska, D., Levchenko, B. B., Meijers, F., Michałowska, A. B., Naumann, Th., Nikolaenko, V. I., Olkiewicz, K., Pawlik, B., Petrovikh, L. P., Pöllänen, R., Ronjin, V. M., Rybin, A. M., Saarikko, H. M. T., Schmitz, W., Scholten, L., Smirnova, L. N., Tchikilev, O. G., Tomaradze, A. G., Uvarov, V. A., Verbeure, F., Wischnewski, R., and EHS-NA22 Collaboration

Published
1989
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23. A study of four- and six-body reactions in π+ andK + p interactions at 250 GeV/c

Author

Ajinenko, I. V., Belokopytov, Yu. A., Bialkowska, H., Boettcher, H., Botterweck, F., Chliapnikov, P. V., Crijns, F., De Roeck, A., De Wolf, E. A., Dziunikowska, K., Eskreys, A., Friebel, W., Garutchava, Z. C., Gevorkyan, G. V., Graessler, H., van Hal, P., Haupt, T., Kirakosyan, Z. A., Kittel, W., Mäkelä, J., Meijers, F., Michalowska, A. B., Nikolaenko, V. I., Oliveira, L. C. S., Olkiewicz, K., Petrovikh, L. P., Ronjin, V. M., Rybin, A. M., Saarikko, H. M. T., Schmitz, W., Scholten, L., Sotnikova, N. N., Tchikilev, O. G., Tikhonova, L. A., Tomaradze, A. G., Uvarov, V. A., Verbeure, F., Wischnewski, R., Yarba, Y. V., and EHS-NA22 Collaboration

Published
1989
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24. Charge and energy flow in π+ p,K + p andpp interactions at 250 GeV/c

Author

Ajinenko, I. V., Baladyan, S. G., Belokopytov, Yu. A., Böttcher, H., Botterweck, F., Chliapnikov, P. V., Crijns, F., De Roeck, A., De Wolf, E. A., Dreher, C., Dziunikowska, K., Ermolov, P. F., Garutchava, Z. C., Gerdyukov, L. N., Gevorkyan, G. V., Grässler, H., van Hal, P., Haupt, T., Kittel, W., Meijers, F., Michałowska, A. B., Nikolaenko, V. I., Oliveira, L. C., Olkiewicz, K., Pöllänen, R., Ronjin, V. M., Rybin, A. M., Saarikko, H. M. T., Schmitz, W., Scholten, L., Shabalina, E. K., Stepaniak, J., Tchikilev, O. G., Tomaradze, A. G., Uvarov, V. A., Verbeure, F., Wischnewski, R., Yarba, Yu. V., Zielinski, W., and EHS-NA22 Collaboration

Published
1989
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25. Bose-Einstein correlations inK + p and π+ p at 250 GeV/c

Author

Adamus, M., Ajinenko, I. V., Belokopytov, Yu. A., Berezhnoy, V. A., Böttcher, H., Chliapnikov, P. V., Crijns, F., De Roeck, A., De Wolf, E. A., Dziunikowska, K., Endler, A. M. F., Ermolov, P. F., Eskreys, A., Graessler, H., hakobyan, R. Sh., van Hal, P., Haupt, T., Kishinevskaya, L. P., Kittel, W., Kurnosenko, A. I., Levchenko, B. B., Mäkela, J., Meijers, F., Michałowska, A. B., Nikolaenko, V. I., Oliveira, L. C. S., Olkiewicz, K., Riipinen, E., Roloff, H. F., Ronjin, V. M., Rybin, A. M., Saarikko, H. M. T., Schmitz, W., Scholten, L., Stepaniak, J., Tchikilev, O. G., Tomaradze, A. G., Uvarov, V. A., Verbeure, F., Wischnewski, R., Zotkin, S. A., and EHS/NA22 Collaboration

Published
1988
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26. Inclusive π0 production in π+ p,K + p andpp interactions at 250 GeV/c

Author

Aiinenko, I. V., Atayan, M. R., Belokopytov, Yu. A., Białkowska, H., Boettcher, H., Brun, R., Chliapnikov, P. V., Crijns, F., De Roeck, A., De Wolf, E. A., Dreher, C., Dziunikowska, K., Endler, A. M. F., Friebel, W., Gevorkyan, G. V., Graessler, H., Gumenyuk, S. A., van Hal, P., Hrubec, J., Karamyan, J. K., Kistenev, E. P., Kittel, W., Kowalski, M., Kurnosenko, A. I., Meijers, F., Minaev, N. G., Michałowska, A. B., Neuhofer, G., Nikolaenko, V. I., Oliveira, L. C. S., Olkiewicz, K., Petrovykh, L. P., Riipinen, E., Rybin, A. M., Saarikko, H. M. T., Saarikko, Y. T. M., Schmitz, P., Schmitz, W., Scholten, L., Sotnikova, N. A., Stepaniak, J., Stergiou, A., Stopchenko, V. A., Tchikilev, O. G., Tikhonova, L. A., Toet, D., Uvarov, V. A., Verbeure, F., Vorobjev, A. P., Wischnewski, R., Wróblewski, A., Zotkin, S. A., and NA22 Collaboration

Published
1987
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27. Cross sections and charged multiplicity distributions for π+ p,K + p andpp interactions at 250 GeV/c

Author

Adamus, M., Agababyan, N. M., Ajinenko, I. V., Bellgardt, U., Belokopytov, Yu. A., Białkowska, H., Boettcher, H., Brun, R., Chliapnikov, P. V., Crijns, F., De Roeck, A., Dziunikowska, K., Endler, A. M. F., Eskreys, A., Falaleev, V. P., Friebel, W., Gavrjusev, V. G., Gorelov, I. V., Graessler, H., van Hal, P., Hrubec, J., Karamyan, J. K., Kisielewska, D., Kistenev, E. P., Kittel, W., Kurnosenko, A. I., Lauhakangas, R. T. A., Loos, M., Meijers, F., Michałowska, A. B., Naumann, T., Neuhofer, G., Nikolaenko, V. I., Oliverira, L. C. S., Olkiewicz, K., Petrovykh, L. P., Roloff, H. E., Rybin, A. M., Saarikko, H. M. T., Saarikko, Y. T. M., Schmitz, P., Schmitz, W., Scholten, L., Startchenko, E. A., Stepaniak, J., Stergiou, A., Struczinski, W., Tchikilev, O. G., Theocharopoulos, P., Toet, D., Van Immerseel, M., Verbeure, F., Vorobjev, A. P., Wischnewski, R., Wróblewski, A., Zotkin, S. A., and NA22 Collaboration

Published
1986
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28. Study of intranuclear collision effects in interactions ofK+/π+ mesons with Al and Au nuclei at 250 GeV/c

Author

Agababyan, N. M., Ajinenko, I. V., Botterweck, F., Charlet, M., Chliapnikov, P. V., De Wolf, E. A., Dziunikowska, K., Endler, A. M., Gulkanyan, G., Hakobyan, R. Sh., Karamyan, J. K., Kittel, W., Kisielewska, D., Levchenko, B. B., Megrabyan, S. S., Olkiewicz, K., Rizatdinova, F., Shabalina, L., Verbeure, F., and Wischnewski, R.

Abstract

Multiplicity, inclusive, correlation and collective characteristics of multiparticle production processes inK+ Al,K+ Au, p+ Al and p+ Au interactions at 250 GeV/c are studied with the European Hybrid Spectrometer, providing high statistics and almost 4 p acceptance for final state charged particles. It is shown that the proton energy spectrum practically does not depend on the target atomic weight, but the proton angular distributions reveal a strongA-dependence. In a model independent way, the average number of intranuclear collisions is extracted, and it is shown that their dominant part (60% for Al and 80% for Au) is caused by interactions of the non-leading particles produced in the target fragmentation. The multiplication ratio of the produced particles for the Au nucleus changes fromR?40 at the smallest rapidities in the target fragmentation region, down toR=0.37±0.06 at the largest rapidities in the beam fragmentation region. It is found that the average total longitudinal momentum of the charged products of the beam fragmentation depends weakly on the number of leading hadron (cluster) intranuclear collisions which are characterized by a low inelasticity coefficient =0.17±0.03.

Published
1992
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29. A study of double pomeron exchange inπ+p andK+p interactions at 250 GeV/c

Author

Atayan, M. R., Ajinenko, I. V., Belokopytov, Yu. A., Böttcher, H., Botterweck, F., Chapkin, M. M., Chliapnikov, P. V., Crijns, F., De Roeck, A., De Wolf, E. A., Dziunikowska, K., Endler, A. M. F., Garutchava, Z. G., Gulkanyan, G. R., van Hal, P., Haupt, T., Karamyan, J. K., Kirakosyan, Z. A., Kisielewska, D., Kittel, W., Megrabyan, S. S., Meijers, F., Michałowska, A. B., Nikolaenko, I. V., Olkiewicz, K., Ronjin, V. M., Rybin, A. M., Shabalina, E. K., Scholten, L., Tchikilev, O. G., Tomaradze, A. G., Tikhonova, L. A., Uvarov, V. A., Verbeure, F., Wischnewski, R., and Zotkin, S. A.

Abstract

Quasi-elastic scattering with central dipion cluster production is studied in p+p andK+p interactions at 250 GeV/c. The cross section of double pomeron exchange is obtained as sDPE(p+p ?p+(p+p-)p)=24 ±5 µb and sDPE(K+p?K+(p+p-)p)=19 ±5 µb. The low energy pomeron-pomeron cross section is estimated for the first time.

Published
1991
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30. Direct soft photon production inK+p andπ+p interactions at 250 GeV/c

Author

Botterweck, F., Chapkin, M. M., Charlet, M., Chliapnikov, P. V., De Roeck, A., De Wolf, E. A., Dziunikowska, K., Eskreys, A., Garutchava, Z. C., Gulkanyan, G. R., Haupt, T., Kishinevskaya, L. P., Kittel, W., Nikolaenko, I. V., Olkiewicz, K., Ronjin, V. M., Smirnova, L. N., Tchikilev, O. G., Tikhonova, L. A., Uvarov, V. A., Verbeure, F., Wischnewski, R., and Zotkin, S. A.

Abstract

Inclusive production of direct soft photons is studied inK+p andK+p interactions at 250 GeV/c. Total cross sections, Feynman-x and transverse momentum distributions of direct ?'s are presented. The measured cross sections are several times larger than expected from QED inner bremsstrahlung, indicating the presence of an anomalous soft photon source. The model of Lichard and Van Hove, based on the “cold quark-gluon plasma” picture, agrees with the data.

Published
1991
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31. Rapidity correlations in π+p, K+p andpp interactions at 250 GeV/c

Author

Aivazyan, V. V., Ajinenko, I. V., Belokopytov, Yu. A., Białkowska, H., Bravina, L. V., Böttcher, H., Botterweck, F., Chliapnikov, P. V., Crijns, F., De Roeck, A., De Wolf, E. A., Dziunikowska, K., Endler, A. M. F., Garutchava, Z. G., Grigoryan, N. G., van Hal, T., Haupt, T., Kisielewska, D., Kittel, W., Meijers, F., Michałowska, A. B., Nikolaenko, V. I., Olkiewicz, K., Petrovikh, L. P., Rizatdinova, F. K., Ronjin, V. M., Rybin, A. M., Scholten, L., Shabalina, E. K., Smirnova, L. N., Sotnikova, N. A., Tchikilev, O. G., Tikhonova, L. A., Tomaradze, A. G., Uvarov, V. A., Verbeure, R., and Wischnewski, R.

Abstract

Two- and three-particle rapidity correlations are analyzed inK+p and p+p-interactions at 250 GeV/c. The main contribution to the two- and three-particle correlation functions comes from mixing of events of different multiplicity. The (short range) two-particle correlation remaining after exclusion of mixing is significantly larger for (+-) than for the equal charge combinations, and is positive for a wider range in rapidity difference. FRITIOF and a 2-string DPM are excluded by our data. A quark-gluon (multi-)string model can describe our inclusive correlation function, but needs to be tuned on the short range part. The multiplicity mixing part increases much faster with increasing energy than the short range part. In the central region, our correlation is similar to that observed ine+e- and µp collisions at similar energy.

Published
1991
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32. Rapidity and transverse momentum structure inπ+ andK+ collisions with Al and Au nuclei at 250 GeV/c

Author

Agababyan, N. M., Ajinenko, I. V., Belokopytov, Yu. A., Boettcher, H., Botterweck, F., Charlet, M., Chliapnikov, P. V., Crijns, F., De Roeck, A., De Wolf, E. A., Dziunikowska, K., Endler, A. M. F., Eskreys, A., Garutchava, Z. C., van Hal, P., Hakobyan, R. Sh., Haupt, T., Kittel, W., Kisielewska, D., Levchenko, B. B., Machowski, B., Meijers, F., Michałowska, A. B., Nikolaenko, V. I., Olkiewicz, K., Rizatdinova, F. K., Ronjin, V. M., Rybin, A. M., Saarikko, H. M. T., Scholten, L., Smirnova, L. N., Stepaniak, J., Tchikilev, O. G., Uvarov, V. A., Verbeure, F., and Wischnewski, R.

Abstract

An analysis is presented of the rapidity and transverse momentum distributions and of the nuclear stopping power in collisions ofp+ andK+ mesons with Al and Au nuclei at 250 GeV/c. The experimental results are compared to predictions of the additive quark model and the dual parton model. The AQM offers an overall consistent description of the data in this experiment. The DPM reproduces reasonably well the rapidity spectra in the central and projectile fragmentation regions, but fails to describe the nuclear stopping power.

Published
1991
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33. Inclusive production of vector mesons in π+p interactions at 250 GeV/c

Author

Agababyan, N. M., Ajinenko, I. V., Belokopytov, Yu. A., Belous, K. S., Boettcher, H., Botterweck, F., Chapkin, M. M., Chliapnikov, P. V., Crijns, F., De Roeck, A., De Wolf, E. A., Dziunikowska, K., Endler, A. M. F., Eskreys, A., Garutchava, Z. C., van Hal, P., Haupt, T., Katargin, A. I., Kittel, W., Megrabyan, S. S., Meijers, F., Michałowska, A. B., Nikolaenko, V. I., Olkiewicz, K., Ronjin, V. M., Rosmalen, R., Saarikko, H. M. T., Scholten, L., Shabalina, E. K., Stepaniak, J., Tchikilev, O. G., Uvarov, V. A., Verbeure, F., Wischnewski, R., Zotkin, S. A., and Yarba, Y. V.

Abstract

We report on a study of ?0, ?+, ?, " andK*0 (892) inclusive production in p+p interactions at 250 GeV/c, for ?+, " for the first time in a p+p experiment. The data are compared withK+p data in the same experiment, with results of other experiments and with quark-parton models. Interesting differences are found between ?+,0 and ? production.

Published
1990
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34. Negative binomials and multiplicity distributions in 250 GeV/cK+ and π+ interactions on Al and Au nuclei

Author

Ajinenko, I. V., Belokopytov, Yu. A., Bialkowska, H., Boettcher, H., Botterweck, F., Charlet, M., Chliapnikov, P. V., Crijns, F., De Roeck, A., De Wolf, D. A., Dziunikowska, K., Endler, A. M. F., Eskreys, A., Garutchava, Z. C., Golubkov, Y. A., Gulkanyan, G. R., van Hal, P., Hakobyan, R. Sh., Haupt, T., Kittel, W., Kisielewska, D., Levchenko, B. B., Machowski, B., Meijers, F., Michałowska, A. B., Nikolaenko, V. I., Olkiewicz, K., Pöllänen, R., Ronjin, V. M., Rybin, A. M., Saarikko, H. M. T., Scholten, L., Smirnova, L. N., Tchikilev, O. G., Uvarov, V. A., Verbeure, F., and Wischnewski, R.

Abstract

The negative binomial distribution (NBD) is fitted to all charged and to negative particle multiplicity distributions in restricted rapidity intervals, both in the forward and backward c.m. hemispheres of positive meson interactions on Al and Au nuclei. For negative particle multiplicity distributions, the NBD parameters are also determined as a function ofng, the number of grey tracks, corresponding to varying number of intranuclear collisions. The data are interpreted in terms of the clan picture of Giovannini and Van Hove and compared to the MCMHA and Fritiof models. Both models reproduce quite well the global multiplicity distributions, but not when sub-samples are considered with fixed number of grey tracks. Regularities are better visible on the parton than on the particle level.

Published
1990
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35. Neutral kaon production inK+p and π+p interactions at 250 GeV/c

Author

Ajinenko, I. V., Albert, L., Belokopytov, Yu. A., Białkowska, H., Böttcher, H., Botterweck, F., Chliapnikov, P. V., Crijns, F., De Roeck, A., De Wolf, E. A., Dziunikowska, K., Endler, A. M. F., Garutchava, Z. C., Gavrjusev, U. G., Hacobyan, R. C., van Hal, P., Haupt, T., Kisielewska, D., Kittel, W., Megrabyan, S. S., Meijers, F., Michałowska, A. B., Nikolaenko, V. I., Olkiewicz, K., Ronjin, V. M., Rybin, A. M., Saarikko, H. M. T., Scholten, L., Shabalina, E. K., Tchikilev, O. G., Uvarov, V. A., Verbeure, F., Verbist, R., Wischnewski, R., and Yarba, Yu. V.

Abstract

The inclusive production of neutral kaons is studied inK+p and p+p interactions at 250 GeV/c. Total and semi-inclusive cross sections and average kaon multiplicities are presented and compared with the data at lower energies. The longitudinal and transverse momentum distributions and their energy dependence are analyzed. The results are interpreted in the framework of recent parton models.

Published
1990
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36. Forward-backward multiplicity correlations in σ+p,K+p andpp collisions at 250 GeV/c

Author

Aivazyan, V. V., Ajinenko, I. V., Belokopytov, Yu. A., Bosetti, P. C., Böttcher, H., Botterweck, F., Chliapnikov, P. V., Crijns, F., De Roeck, A., De Wolf, E. A., Driever, Th., Dziunikowska, K., Eskreys, A., Friebel, W., Garutchava, Z. C., Gavrjusev, V. G., Graessler, H., van Hal, P., Haupt, T., Kittel, W., Megrabyan, S. S., Meijers, F., Michałowska, A. B., Nikolaenko, V. I., Oliveira, L. C. S., Olkiewicz, K., Petrovikh, L. P., Riipinen, E., Ronjin, V. M., Rybin, A. M., Saarikko, H. M. T., Schmitz, W., Scholten, L., Schulte, R., Tchikilev, O. G., Tikhonova, L. A., Tomaradze, A. G., Uvarov, V. A., Verbeure, F., Wischnewski, R., Wróblewski, A., and Zotkin, S. A.

Abstract

Forward-backward multiplicity correlations in s+,K+p andpp collisions at 250 GeV/c ( "=22 GeV) are given for all charges and for the different charge combinations. The correlations are found to be caused predominantly by centrally produced particles. It is demonstrated that this result is an agreement with observations at the ISR and the CERNp "-Collider. The results are compared to expectations from LUND, DPM and FRITIOF Monte Carlo models and a geometrical picture relating correlations in hadron-hadron collisions toe+e- data in terms of impact parameters is tested.

Published
1989
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37. Multiplicity distribution inK+ Al andK+ Au collisions at 250 GeV/c and a test of the multiple collision model

Author

Ajinenko, I. V., Belokopytoy, Yu. A., Bialkowska, H., Boettcher, H., Bottorweck, F., Chliapnikov, P. V., Crijns, F., de Roeck, A., de Wolf, E. A., Dziunikowska, K., Endler, A. M. F., Eskreys, A., Garutchava, Z. C., Golubkov, Y., Graessler, H., Gulkanyan, G. R., van Hal, P., Hakobyan, R. Sh., Haupt, T., Kittel, W., Kisielewska, D., Levchenko, B. B., Meijers, F., Michałowska, A. B., Naumann, Th., Nikolaenko, V. I., Olkiewicz, K., Pawlik, B., Petrovikh, L. P., Pöllänen, R., Ronjin, V. M., Rybin, A. M., Saarikko, H. M. T., Schmitz, W., Scholten, L., Smirnova, L. N., Tchikilev, O. G., Tomaradze, A. G., Uvarov, V. A., Verbeure, F., and Wischnewski, R.

Abstract

Multiplicity distributions, observed inK+ interactions with Al and Au nuclei at 250 GeV/c incident momentum are presented. They are analyzed in the framework of multiple collisions of the incident particle inside a nucleus. The probability distribution of the number of grey tracks is well described by the model of Andersson et al., if a negative binomial distribution is assumed for the distribution of the number of grey protons produced per elementary collision instead of the usual geometrical distribution. The analysis of the average and dispersion of the charge multiplicity distribution supports the validity of the multiple collision model, including results on correlations between forward and backward multiplicities.

Published
1989
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38. Cross sections and charged multiplicity distributions for π+p,K+p andpp interactions at 250 GeV/c

Author

Adamus, M., Agababyan, N. M., Ajinenko, I. V., Bellgardt, U., Belokopytov, Yu. A., Białkowska, H., Boettcher, H., Brun, R., Chliapnikov, P. V., Crijns, F., De Roeck, A., Dziunikowska, K., Endler, A. M. F., Eskreys, A., Falaleev, V. P., Friebel, W., Gavrjusev, V. G., Gorelov, I. V., Graessler, H., van Hal, P., Hrubec, J., Karamyan, J. K., Kisielewska, D., Kistenev, E. P., Kittel, W., Kurnosenko, A. I., Lauhakangas, R. T. A., Loos, M., Meijers, F., Michałowska, A. B., Naumann, T., Neuhofer, G., Nikolaenko, V. I., Oliverira, L. C. S., Olkiewicz, K., Petrovykh, L. P., Roloff, H. E., Rybin, A. M., Saarikko, H. M. T., Saarikko, Y. T. M., Schmitz, P., Schmitz, W., Scholten, L., Startchenko, E. A., Stepaniak, J., Stergiou, A., Struczinski, W., Tchikilev, O. G., Theocharopoulos, P., Toet, D., Van Immerseel, M., Verbeure, F., Vorobjev, A. P., Wischnewski, R., Wróblewski, A., and Zotkin, S. A.

Abstract

Cross sections and charged multiplicity distributions for p+p,K+p andpp interactions at 250 GeV/c are presented and compared to each other as well as to earlier (for p+p andK+p lower energy) data. Consistently, the meson-proton (M+p) data have narrower multiplicity distributions and higher average multiplicity thanpp data. Up to our energy, generalized KNO functions describe the energy dependence of the shape of the multiplity distribution with one parameter forM+p and one forpp collisions. If interpreted in terms of negative binomials, the parameter 1/k tends to be slightly lower forM+p than forpp data. For both types of hadron-hadron collision, 1/k is larger than fore+e- andlp collisions.

Published
1986
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39. Collective characteristics of hadron systems produced in beam fragmentation of π+p collisions at 250 GeV/c

Author

Ajinenko, I. V., Białkowska, H., Böttcher, H., Botterweck, F., Crijns, F., De Roeck, A., De Wolf, E. A., Dziunikovska, K., Endler, A. M. F., Ermolov, P. F., Garutchava, Z. C., Golubkov, Y. A., Grigoryan, N. G., Gulkanyan, G. R., van Hal, P., Haupt, T., Karamyan, J. K., Kirakosyan, Z. A., Kisielewska, D., Kittel, W., Megrabyan, S. S., Meijers, F., Michałowska, A. B., Olkiewicz, K., Petrovikh, L. P., Rybin, A. M., Saarikko, H., Scholten, L., Shabalina, E. K., Verbeure, F., Wischnewski, R., and Zotkin, S. A.

Abstract

Collective characteristics are studied of hadrons produced in beam fragmentation of non-single-diffractive p+p-interactions at 250 GeV/c. An attempt is made to obtain experimental information on the properties of leading cluster production and fragmentation. On average, the leading cluster carries 0.8±0.1 of the incident momentum, so that the mean value of the inelasticity coefficient of =0.2±0.1 is significantly smaller than that deduced from leading single hadron spectra. The momentum transfer distribution shows that nonsingle-diffractive processes are less peripheral than diffraction dissociation. The analysis of thrust and sphericity shows jet-like structure of pion fragmentation, that of the charge flow an average forward charge of f>=0.45±0.04, in agreement with the average charge of the beam valence quarks. Our data are compared to diffraction dissociation and to the Fritiof model.

Published
1991
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40. Multiplicity structure of inclusive diffraction in À+p andK+p interactions at 250 GeV/c

Author

Begalli, M., Botterweck, F., Boettcher, H., Charlet, M., Chliapnikov, P. V., De Wolf, E. A., Dziunikowska, K., Endler, A. M. F., Eskreys, A., Friebel, W., Gulkanyan, G. R., Garutchava, Z. S., Kittel, W., Megrabyan, S. S., Naumann, Th., Olkiewicz, K., Roloff, H. E., Tchikilev, O. G., Tikhonova, L. A., Tomaradze, A. G., Verbeure, F., Wischnewski, R., and Zotkin, S. A.

Abstract

Results on the multiplicity structure of diffractively excited meson and proton systems in À+/K+p interactions at 250 GeV/c are presented for diffractive masses up to about 9 GeV. The energy dependence of the average charge multiplicity and the shape of the multiplicity distribution in terms of KNO-scaling and negative binomial distribution are investigated. The diffractive systems are compared toe+e-,lh and non-diffractivehh final states as suggested by modern approaches of the Pomeron-hadron collision. Systematic differences are found between diffractive meson and proton systems but also between diffraction and the reactions compared to.

Published
1992
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41. Neutral strange particle production inK+ andπ+ collisions with Al and Au nuclei at 250 GeV/c

Author

Botterweck, F., Charlet, M., Chliapnikov, P. V., De Roeck, A., De Wolf, E. A., Dziunikowska, K., Ermolov, P. E., Eskreys, A., Garutchava, Z. C., Gulkanyan, G., Hakobyan, R. Sh., Haupt, T., Kaleba, K., Kittel, W., Kisielewska, D., Michalowska, A. B., Nikolaenko, V. I., Olkiewicz, K., Ronjin, V. M., Tomaradze, A. G., Verbeure, F., Wischnewski, R., and Zotkin, S. A.

Abstract

Data are presented on inclusiveKs0 and ? production inK+ and p+ collisions with Al and Au nuclei at 250 GeV/c. Results are given on total inclusive cross sections and theA dependence, as well as on distributions in Feynman-xF, rapidityy and transverse momentum. Ratios ofKS0 and of ? to p+ production are presented. The data are compared with predictions of the quark-parton model FRITIOF.

Published
1992
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42. π0 andη meson production inπ+p andK+p collisions at 250 GeV/c

Author

Atayan, M. R., Botterweck, F., Charlet, M., Chliapnikov, P. V., De Roeck, A., De Wolf, E. A., Dziunikowska, K., Endler, A. M., Fisyak, Yu. V., Gevorkyan, G. V., Kisielewska, D., Kittel, W., Olkiewicz, K., Rohjin, V. M., Shabalina, E. K., Sotnikova, N. A., Tikhonova, L. A., Tchikilev, O. G., Verbeure, F., Wischnewski, R., and Zotkin, S. A.

Abstract

We report on a study of inclusiveπ0 and η meson production inπ+p andK+p interactions at 250 GeV/c beam momentum. The Feynman-x spectrum ofπ0 is very similar in shape and normalization to that of negatively charged particles produced in the same experiment. The results are compared with data at other energies and with FRITIOF model predictions. This model overestimates the η cross section by a factor of 2.5. It reproduces theπ0 cross section correctly, but predicts a too hardπ0x distribution.

Published
1992
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43. Strange and non-strange baryon production in π+p andK+p interactions at 250 GeV/c

Author

Ajinenko, I. V., Atayan, M. R., Belokopytov, Yu. A., Boettcher, H., Botterweck, F., Chliapnikov, P. V., Crijns, F., de Roeck, A., De Wolf, E. A., Dziunikowska, K., Endler, A. M. F., Eskreys, A., Garutchava, Z. C., Golubkov, Yu. A., Grigoryan, N. G., van Hal, P., Haupt, T., Kittel, W., Levchenko, B. B., Meijers, F., Michalowska, A. B., Nikolaenko, V. I., Olkiewicz, K., Pöllänen, R., Petrovikh, L. P., Ronjin, V. M., Rosmalen, R., Rosmalen, R., Rybin, A. M., Saarikko, H. M. T., Scholten, L., Sotnikova, N. N., Stepaniak, J., Tchikilev, O. G., Tomaradze, A. G., Uvarov, V. A., Verbeure, F., and Wischnewski, R.

Abstract

We present data on the production of the baryons ?, ",p and of the baryon resonances S*+ (1385) and ?++ (1232) inK+p and p+p interactions at 250 GeV/c. Results are given on total and semi-inclusive cross sections, Feynman-x spectra, transverse momentum distributions and ? polarization. The data are compared with measurements at lower energies, with deep inclastic lepton nucleon data and with predictions of quark-parton models. The models underestimate ? production in the central c.m. region, a feature also seen in recent heavy-ion data. This failure can be cured in JETSET 6.3 by adjustment of the di-quark break-up probability.

Published
1989
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44. Bose-Einstein correlations inK+p and π+p at 250 GeV/c

Author

Adamus, M., Ajinenko, I. V., Belokopytov, Yu. A., Berezhnoy, V. A., Böttcher, H., Chliapnikov, P. V., Crijns, F., De Roeck, A., De Wolf, E. A., Dziunikowska, K., Endler, A. M. F., Ermolov, P. F., Eskreys, A., Graessler, H., hakobyan, R. Sh., van Hal, P., Haupt, T., Kishinevskaya, L. P., Kittel, W., Kurnosenko, A. I., Levchenko, B. B., Mäkela, J., Meijers, F., Michałowska, A. B., Nikolaenko, V. I., Oliveira, L. C. S., Olkiewicz, K., Riipinen, E., Roloff, H. F., Ronjin, V. M., Rybin, A. M., Saarikko, H. M. T., Schmitz, W., Scholten, L., Stepaniak, J., Tchikilev, O. G., Tomaradze, A. G., Uvarov, V. A., Verbeure, F., Wischnewski, R., and Zotkin, S. A.

Abstract

Two-pion correlations are studied for pions of like charge inK+p andp+p collisions at 250 GeV/c. An enhanced production is observed at small momentum difference and is attributed to Bose-Einstein interference between identical particles. A systematic study is presented on the influence of parametrization and reference sample. Interpreted in terms of the Kopylov-Podgoretskii parametrization a size of the emitting regionrK˜1.4 fm is found. The Lorentz invariant parametrization of Goldhaber givesrG˜0.8 fm. With fixed parametrization, similarity is found for hadronhadron,e+e- and lepton-hadron collisions. No multiplicity or angular dependence is found at our energy.

Published
1988
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45. Phase space dependence of the multiplicity distribution in π+ andpp collisions at 250 GeV/c

Author

Adamus, M., Agababyan, N. M., Ajinenko, I. V., Belokopytov, Yu. A., Białkowska, H., Böttcher, H., Chliapnikov, P. V., Crijns, F., De Roeck, A., De Wolf, E. A., Dziunikowska, K., Endler, A. M. F., Friebel, W., Graessler, H., van Hal, P., Karamyan, J. K., Kisielewska, D., Kittel, W., Kurnosenko, A. I., Levchenko, B. B., Meijers, F., Merk, M., Michałowska, A. B., Nikolaenko, V. I., Oliveira, L. C. S., Olkiewicz, K., Ronjin, V. M., Rybin, A. M., Saarikko, H. M. T., Saarikko, Y. T. M., Schmitz, W., Scholten, L., Sotnikova, N. A., Stepaniak, J., Tchikilev, O. G., Tikhonova, L. A., Uvarov, V. A., Verbeure, F., and Wischnewski, R.

Abstract

The charged particle multiplicity distribution has been studied for non-single-diffractive p+p andpp collisions at " GeV, for full phase space as well as for intervals in rapidity, azimuthal angle and transverse momentum. In general, the multiplicity distribution is well described by a negative binomial. From comparison of the distribution for negative or positive particles to that of all charged particles, cascading is favoured as an interpretation over stimulated emission. Interesting consequences follow from a comparison of our results to those at collider energies and toe+e- data at comparable energy. Furthermore, evidence is given that the multiplicity distribution is not exactly of negative binomial type in every (connected or disconnected) phase space region.

Published
1988
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46. Triple Regge analysis of inclusiveΛ production inK+p and π+p interactions at 250 GeV/c

Author

Agababyan, N. M., Belokopytov, Yu. A., Böttcher, H., Botterweck, F., Chapkin, M. M., Chliapnikov, P. V., Crijns, F., De Roeck, A., De Wolf, E. A., Dziunikowska, K., Endler, A. M. F., Garutchava, Z. G., van Hal, P., Haupt, T., Kisielewska, D., Kittel, W., Levchenko, B. B., Megrabyan, S. S., Meijers, F., Michałowska, A. B., Nikolaenko, V. I., Olkiewicz, K., Rizatdinova, F. K., Ronjin, V. M., Scholten, L., Shabalina, E. K., Sotnikova, N. A., Tchikilev, O. G., Uvarov, V. A., Verbeure, F., and Wischnewski, R.

Abstract

A triple Regge analysis is performedof inclusive Λ production in the proton fragmentation region ofK+→Λ+X and π+→Λ+X at 250 GeV/c. Slope and intercept of the leading strange meson trajectory are determined. The results obtained here are compared with those of other experiments.

Published
1991
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47. Inclusive meson resonance production inK+p interactions at 250 GeV/c

Author

Agababyan, N. M., Ajinenko, I. V., Belokopytov, Yu. A., Boettcher, H., Chliapnikov, P. V., Crijns, F., De Roeck, A., De Wolf, E. A., Dziunikowska, K., Garutchava, Z. C., Gavrjusev, V. G., Graessler, H., Gulkanyan, G. R., van Hal, P., Haupt, T., Kittel, W., Kisielewska, D., Meijers, F., Michalowska, A. B., Nikolaenko, V. I., Oliveira, L. C. S., Olkiewicz, K., Ronjin, V. M., Rybin, A. M., Saarikko, H. M. T., Saarikko, Y. T. M., Schmitz, W., Scholten, L., Tchikilev, O. G., Tikhonova, L. A., Tomaradze, A. G., Uvarov, V. A., Verbeure, F., Wischnewski, R., Wróblewski, A., and Zotkin, S. A.

Abstract

A detailed analysis of the inclusive production of the vector mesonsf,K*+,0(892) " and the tensor mesonsK2*0)(1430) andf2(1270) inK+p interactions at 250 GeV/c is presented The data are compared with results at lower energies and with various quark-parton models. The production of?0,K*0(892) and " increases at the same rate as a function ofs, is concentrated in the central region and is not reproduced by the models. Production of the tensor mesonsf2(1270) andK2*0(1340) is suppressed relative to?0 andK*0(892) by a factor of about 3.

Published
1989
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48. Inclusive π0 production in π+p,K+p andpp interactions at 250 GeV/c

Author

Aiinenko, I. V., Atayan, M. R., Belokopytov, Yu. A., Białkowska, H., Boettcher, H., Brun, R., Chliapnikov, P. V., Crijns, F., De Roeck, A., De Wolf, E. A., Dreher, C., Dziunikowska, K., Endler, A. M. F., Friebel, W., Gevorkyan, G. V., Graessler, H., Gumenyuk, S. A., van Hal, P., Hrubec, J., Karamyan, J. K., Kistenev, E. P., Kittel, W., Kowalski, M., Kurnosenko, A. I., Meijers, F., Minaev, N. G., Michałowska, A. B., Neuhofer, G., Nikolaenko, V. I., Oliveira, L. C. S., Olkiewicz, K., Petrovykh, L. P., Riipinen, E., Rybin, A. M., Saarikko, H. M. T., Saarikko, Y. T. M., Schmitz, P., Schmitz, W., Scholten, L., Sotnikova, N. A., Stepaniak, J., Stergiou, A., Stopchenko, V. A., Tchikilev, O. G., Tikhonova, L. A., Toet, D., Uvarov, V. A., Verbeure, F., Vorobjev, A. P., Wischnewski, R., Wróblewski, A., and Zotkin, S. A.

Abstract

Data are presented on inclusive p0 production in the forward c.m. hemisphere (xF>0.025) in p+p,K+p andpp interactions at 250 GeV/c. These data are compared to results at other energies and interpreted in terms of quark-parton models.

Published
1987
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49. A study of four- and six-body reactions in π+andK+pinteractions at 250 GeV/c

Author

Ajinenko, I. V., Belokopytov, Yu. A., Bialkowska, H., Boettcher, H., Botterweck, F., Chliapnikov, P. V., Crijns, F., De Roeck, A., De Wolf, E. A., Dziunikowska, K., Eskreys, A., Friebel, W., Garutchava, Z. C., Gevorkyan, G. V., Graessler, H., van Hal, P., Haupt, T., Kirakosyan, Z. A., Kittel, W., Mäkelä, J., Meijers, F., Michalowska, A. B., Nikolaenko, V. I., Oliveira, L. C. S., Olkiewicz, K., Petrovikh, L. P., Ronjin, V. M., Rybin, A. M., Saarikko, H. M. T., Schmitz, W., Scholten, L., Sotnikova, N. N., Tchikilev, O. G., Tikhonova, L. A., Tomaradze, A. G., Uvarov, V. A., Verbeure, F., Wischnewski, R., and Yarba, Y. V.

Abstract

Data on the reactions (K+/π+)p→(K+/π+)pπ+π-and (K+/π+)p→(K+/π+)p2π+2π-, obtained with the European Hybrid Spectrometer, are presented and compared with data at lower energies. The contribution of beam and target diffractive dissociation and double Pomeron exchange, and porperties of these reactions are discussed.

Published
1989
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50. Charge and energy flow in π+p,K+pandppinteractions at 250 GeV/c

Author

Ajinenko, I. V., Baladyan, S. G., Belokopytov, Yu. A., Böttcher, H., Botterweck, F., Chliapnikov, P. V., Crijns, F., De Roeck, A., De Wolf, E. A., Dreher, C., Dziunikowska, K., Ermolov, P. F., Garutchava, Z. C., Gerdyukov, L. N., Gevorkyan, G. V., Grässler, H., van Hal, P., Haupt, T., Kittel, W., Meijers, F., Michałowska, A. B., Nikolaenko, V. I., Oliveira, L. C., Olkiewicz, K., Pöllänen, R., Ronjin, V. M., Rybin, A. M., Saarikko, H. M. T., Schmitz, W., Scholten, L., Shabalina, E. K., Stepaniak, J., Tchikilev, O. G., Tomaradze, A. G., Uvarov, V. A., Verbeure, F., Wischnewski, R., Yarba, Yu. V., and Zielinski, W.

Abstract

We present data on the flow of energy and charge in π+p,K+pandppinteractions at 250 GeV/c. The energy and charge flow in the beam c.m. hemisphere is analysed in terms of the cluster-invariant Bialas-Ochs-Stodolsky variable λ=cot θ/Ejet. The profile functionsdQ/dλ anddE/dλ indicate a widening inpTof jets between 32 and 250 GeV/c incident laboratory momentum, whereas the ratiodQ/dEis energy independent. The data are compared to μpdeep-inelastic scattering resutls and to expectations from the single string LUND model, the Dual Parton Model and the two-string LUND model (FRITIOF).

Published
1989
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