排序方式: 共有41条查询结果,搜索用时 15 毫秒
1.
Ph. Gavillet C. Dionisi A. Gurtu R.J. Hemingway M.J. Losty J.C. Marin M. Mazzucato L. Montanet E. Pagiola R. Blokzijl B. Jongejans J.C. Kluyver G.G.G. Massaro J.J. Engelen J.S.M. Vergeest M. Zralek B. Foster P. Grossmann J. Wells 《Physics letters. [Part B]》1978,78(1):158-161
The backward production of the B(1235) meson is studied in the reaction K?p→Σ?π+ω. This reaction is observed in the final state Σ?π+π+π?π0. A π+ω mass enhancement is visible in the region of the B meson for events with small |u|K? →Σ?) squared four-momentum transfer. The properties of the enhancement agree with those of the B meson. The cross section for K?p→Σ?B+ at incident K? momentum is (3.2 ± 0.5) μb. The backward production of the B meson is compared with similar baryon exchange productions of the A1 and C(Q1) axial vector mesons observed in the same experiment. 相似文献
2.
D. Yaffe M. Abramovich V. Chaloupka A. Ferrando M. Korkea-aho M.J. Losty L. Montanet E. Paul J. Zatz Z. Zieminski 《Nuclear Physics B》1974,75(3):365-387
We have investigated the final states K10(890)Σ, and K10(890) Y110(1385) produced in π?p interactions at 3.93 GeV/c. We present the differential cross sections and spin density matrix elements for the resonances as functions of momentum transfer, as well as the gL and Σ0 polarizations. The Σ0 polarization is found to be positive and maximal. An amplitude analysis is performed for the K1 Λ and reactions, and it is found that one natural parity transversity amplitude is dominant for the latter. 相似文献
3.
R.J. Hemingway R. Armenteros C. Dionisi Ph. Gavillet A. Gurtu S.O. Holmgren M.J. Losty J.C. Marin M. Mazzucato L. Montanet M. Banting R. Blokzijl A.J. De Groot B. Jongejans J.C. Kluyver W.M. Van Leeuwen G.G.G. Massaro J. Wells 《Nuclear Physics B》1978,142(3):205-219
Forty events have been observed in a large (133 events/βb) experiment at 4.2 GeV/c incident K? momentum. Thirty nine of the events come from the three-body reaction . The is mainly produced in the forward hemisphere (direction of the incident K?). The lifetime is measured to be τ = (0.75 +0.14?0.11 × 10?10 sec substantially less than the Particle Data Group value of (1.3 ?0.3+0.2) × 10?10 sec. The mass is determined to be 1671.7 ± 0.6 MeV, in good agreement with other determinations. The decay asymmetry parameter α (for the decay mode ) is found to be ?0.2 ± 0.4. 相似文献
4.
Bailly J. L. Caso C. Chiba Y. Dibon H. Epp B. Ferrando A. Fontanelli F. Ganguli S. N. Gémesy T. Gurtu A. Hamatsu R. Hidas P. Hirose T. Hrubec J. Ivanyshenkov Yu. Kageya T. Khalatyan N. Kistenev E. Kita I. Kitamura S. Kubik V. MacNaughton J. Malhotra P. K. Matsumoto S. Mittra I. S. Montanet L. Neuhofer G. Pinter G. Porth P. Raghavan R. Rodrigo T. Singh J. Squarcia S. Takahashi K. Tanaka R. Tikhonova L. A. Trevisan U. Yamagata T. Zholobov G. Zotkin S. A. 《Zeitschrift fur Physik C Particles and Fields》1989,43(3):341-348
Zeitschrift für Physik C Particles and Fields - Correlations among identically charged pions were measured for pions produced inp p collisions at 360 GeV/c using the EHS spectrometer. The... 相似文献
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6.
J. L. Bailly W. Bartl F. Bruyant W. M. Bugg C. Caso R. Contri H. Dibon R. Di Marco B. Epp A. Ferrando F. Fontanelli P. Girtler A. Gurfu E. L. Hart P. Herquet J. Hrubec Y. Iga E. Kisteney S. Kitamura J. M. Kohli H. Kohno J. C. Marin M. Markytan I. S. Mittra L. Montanet G. Neuhofer Y. Petrovykh R. Plano B. Poljakov P. Porth B. Powell B. Pylgroms T. Rodrigo A. H. Rogers J. Salicio S. Squarcia P. Stamer V. Stopchenko K. Sudhakar U. Trevisan C. Willmott T. Yamagata V. Yarba EHS-RCBC Collaboration Bombay-CERN-Genova-Innsbruck-Japan UG-Madrid-Mons-Rutgers-Serpukhov-Tennessee-Vienna Collaboration 《Zeitschrift fur Physik C Particles and Fields》1984,22(2):119-124
The intermediate and forward gamma detectors of EHS are used to reconstructπ°'s produced by 360 GeV/cpp interactions in the Rapid Cycling Bubble Chamber (RCBC). Using thepp forwardbackward symmetry, the inclusiveπ° production cross section is obtainedσ π°=(132±11) mb. The averageπ° multiplicity is determined as a function of the charged particle multiplicity. The (1?x) dependence is given for differentp T regions. 相似文献
7.
M.J. Losty V. Chaloupka L. Montanet E. Paul D. Yaffe A. Zieminski B. Gandois J. Alitti J. Louie 《Physics letters. [Part B]》1975,56(1):96-100
The reaction π?p → A?2p at 3.9 GeV/c incident momentum is studied using data corresponding to the ?°π?, ηπ? and KδsK? decay modes of the A?2. Unnatural parity exchange is found to be important at this energy. The natural parity exchange component of the differential cross section exhibits structure at t′ ≈ GeV2. 相似文献
8.
S.N. Ganguli A. Gurtu P.K. Malhotra R. Raghavan A. Subramanian M. Cerrada J. Diaz J.A. Garzon R. Hamatsu L. Montanet Ch. Defoix L. Dobrzynski P. Ladron de Guevara R. Nacash P. Petitjean B. Adeva M. Aguilar-Benitez R. Pazzi 《Nuclear Physics B》1981,183(3):295-329
annihilations, leading to the production of at least one neutral K meson in the final state, have been studied in the incident momentum region of 700–760 MeV/c. Topological cross sections and cross sections for the various exclusive final states are presented. Detailed analyses of the different final states have been carried out to study the importance of resonance production and of quasi two-body and quasi three-body processes. A detailed study of the system in the four-body final states shows that the F1 meson is a spurious effect due to systematic biases. In the momentum range investigated, the C = +1 final states are strongly suppressed. 相似文献
9.
M. Asai J. L. Bailly S. Banerjee F. Bruyant W. M. Bugg C. Caso H. Dibon R. Di Marco T. Emura B. Epp A. Ferrando Y. Fisyak F. Fontanelli P. Girtler A. Gurtu R. Hamatsu E. L. Hart P. Herquet J. Hrubec Y. Iga N. Khalatjan E. Kistenev P. Ladron de Guevara J. MacNaughton J. C. Marin M. Markytan I. S. Mittra L. Montanet G. Neuhofer N. Ohshima Y. Petrovikh P. Porth B. Pijlgroms M. Regler T. Rodrigo J. Saliclo J. B. Singh S. Squarcia P. Stamer V. Stopchenko U. Trevisan C. Willmott G. Zholobov EHS-RCBC Collaboration 《Zeitschrift fur Physik C Particles and Fields》1985,27(1):11-19
10.
J. L. Bailly S. Banerjee F. Bruyant B. Buschbeck C. Caso H. Dibon B. Epp A. Ferrando F. Fontanelli T. Gemesy A. Gurtu R. Hamatsu Ph. Herquet T. Hirose J. Hrubec Yu. Ivanysherkov E. P. Kistenev N. Khalatyan S. Kitamura T. Kreuzberger V. Kubik P. Lipa P. K. Malhotra M. Markytan I. S. Mittra L. Montanet G. Neuhofer G. Pinter P. Porth R. Raghavan T. Rodrigo J. B. Singh S. Squarcia U. Trevisan K. Takahashi L. A. tikhonova T. Yamagata G. Zholobov J. Zoll S. A. Zotkin NA EHS - RCBC Collaboration 《Zeitschrift fur Physik C Particles and Fields》1988,40(1):13-24
Two particle correlations of hadrons produced in 360 GeV/cpp interactions are investigated in the transverse plane and in rapidity. The data were obtained at the European hybrid spectrometer equipped with a rapid cycling bubble chamber. The observed transverse and rapidity correlations are compared with the one string LUND-and a two string dual parton-model. These models predict in general stronger correlations in the transverse plane and much weaker correlations in rapidity than found in the data. The LUND-FRITIOF-and multichain dual parton models provide a better reproduction of the data, although the agreement is not yet satisfactory. Only the UA5 cluster model GENCL shows agreement with the data. 相似文献