共查询到20条相似文献,搜索用时 0 毫秒
1.
E. Matsinos J. Guy E. Simopoulou W. Venus P. Allport M. Berggren M. Calicchio T. Coghen A. M. Cooper-Sarkar O. Erriquez N. Giannakopoulos G. T. Jones P. Marage M. M. Mobayyen D. R. O. Morrison S. O'Neale M. A. Parker J. Sacton R. A. Sansum N. Schmitz G. W. Van Apeldoorn K. Varvell A. Vayaki H. Wachsmuth W. Wittek BEBC WA Collaboration 《Zeitschrift fur Physik C Particles and Fields》1989,44(1):79-87
Backward proton and pion production is studied in ν and \(\bar v\) charged current interactions in neon. The results are compared with other experiments and theory. The complete backward proton data is compatible with protons produced by reinteractions in the nucleus. However in events with only one proton, muon variables appear correlated to those for the backward proton, as expected by the two-nucleon correlation model. 相似文献
2.
D. Allasia C. Angelini A. Baldini L. Bertanza F. Bianchi A. Bigi F. Bobisut A. Borg P. Capiluppi R. Cirio J. Derkaoui M. L. Faccini-Turluer A. G. Frodesen D. Gamba G. Giacomelli B. Jongejans G. Mandrioli A. Margiotta-Neri A. Marzari-Chiesa R. Pazzi L. Patrizii C. Petri F. Predieri A. Romero A. M. Rossi A. Sconza P. Serra-Lugaresi M. Spurio A. G. Tenner G. W. van Apeldoorn P. H. A. van Dam N. A. M. van Eijndoven D. Vignaud WA Collaboration 《Zeitschrift fur Physik C Particles and Fields》1988,37(4):527-533
Bose-Einstein correlations between pions of equal charge have been observed in Charged Current and Neutral Current (anti)neutrino-deuterium interactions in the BEBC bubble chamber exposed to the SPS wide band beam. The pion emission region is found to be essentially spherical with a mean radius of (0.48±0.07) fm; the chaoticity parameter is 0.36±0.04. 相似文献
3.
DeProspo D Kalelkar M Aderholz M Akbari H Allport PP Ammosov VV Andryakov A Asratyan A Badyal SK Ballagh HC Baton J Barth M Bingham HH Brucker EB Burnstein RA Cence RJ Chatterjee TK Clayton EF Corrigan G Coutures C Devanand De Wolf E Ermolov P Erofeeva I Faulkner PJ Foeth H Fretter WB Gapienko G Gupta VK Hanlon J Harigel G Harris FA Ivanilov A Jabiol M Jacques P Jain V Jones GT Jones MD Kafka T Kaftanov V Kasper P Kobrin V Kohli JM Koller EL Korablev V Kubantsev M Lauko M Lukina O Lys JE 《Physical review D: Particles and fields》1994,50(11):6691-6703
4.
H.C. Ballagh H.H. Bingham P. Bosetti W.B. Fretter D. Gee J.-F. Grivaz G. Lynch J.P. Marriner J. Orthel F.C. Porter M.D. Sokoloff M.L. Stevenson G.P. Yost R.J. Cence F.A. Harris M.D. Jones S.I. Parker V.Z. Peterson B.S. Yuldashev 《Physics letters. [Part B]》1978,79(3):320-324
From an exposure of the Fermilab 15 ft Neon(64 atomic %)H2 filled bubble chamber to a single-horn-focussed beam, we have found 60 e?X and 35 e+X events, which we compare with 227 μ?X and 202 μ+X events. No statistically significant departures from μ-e universality are seen in the shapes of various differential cross sections. 相似文献
5.
Adamovich MI Aggarwal MM Alexandrov YA Andreeva NP Anson ZV Arora R Avetyan FA Badyal SK Basova E Bazarov IK Bhalla KB Bhasin A Bhatia VS Bogdanov VG Bubnov VI Burnett TH Cai X Carshiev DA Chasnicov IY Chernova LP Chernyavski MM Eligbaeva GZ Eremenko LE Gaitinov AS Ganssauge ER Garpman S Gerassimov SG Grote JG Gulamov KG Gupta SK Gupta VK Heckman HH Huang H Jacobsson B Judek B Kachroo S Kalyachkina GS Kanygina EK Karabova M Kharlamov SP Kitroo S Koss T Krasnov SA Kumar V Lal P Larionova VG 《Physical review D: Particles and fields》1993,47(9):3726-3732
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7.
The interpretation of the charged (CCQE) and neutral (NCE) current quasi elastic events collected by the MiniBooNE Collaboration involves a number of unresolved issues. While it has been suggested that the data can be explained in terms of an effective nucleon axial mass, MA, the results of our theoretical calculations suggest that the CCQE and NCE samples cannot be described by the same value of MA. We argue that the disagreement between theory and data may arise from the uncertainties associated with the flux average procedure. We also analyze the role of the strange quark in NCE interactions and find that, due to a cancellation between proton and neutron contributions, it turns out to be negligible. 相似文献
8.
A.E. Asratyan A.P. Bugorsky V.Sh. Epstein R.M. Fakhrutdinov V.A. Gemanov V.N. Goryachev E.A. Grigoriev N.V. Kalganov V.S. Kaftanov V.G. Kartashova V.D. Khovansky L.A. Klimenko V.I. Kochetkov Yu.G. Kornelyuk M.A. Kubantsev A.V. Kulikov V.I. Kurbakov I.P. Maksimov Yu.A. Zudin 《Physics letters. [Part B]》1978,76(2):239-242
Charged current data of a spark chamber neutrino experiment at the 70 GeV Serpukhov accelerator (10 200 events in the v beam and 3600 events in the beam with energies up to 30 GeV) have been analyzed. Total neutrino and antineutrino cross sections and v-distributions are obtained. 相似文献
9.
D. Allasia C. Angelini A. Baldini L. Bertanza A. Bigi V. Bisi F. Bobisut T. Bolognese A. Borg E. Calimani P. Capiluppi R. Casali S. Ciampolillo J. Derkaoui M. L. Faccini-Turluer R. Fantechi V. Flaminio A. G. Frodesen D. Gamba G. Giacomelli H. Huzita B. Jongejans I. Lippi M. Loreti C. Louedec G. Mandrioli A. Marzari-Chiesa A. Nappi R. Pazzi C. Petti L. Ramello L. Riccati A. Romero A. M. Rossi A. Sconza P. Serra-Lugaresi A. Tenner G. W. van Apeldoorn P. van Dam D. Vignaud R. Wigmans 《Zeitschrift fur Physik C Particles and Fields》1984,24(2):119-131
Some experimental properties of the charged hadronic fragments are compared for νp, νn, \(\bar vp\) and \(\bar vn\) interactions: multiplicities of forward and backward going particles,x F distributions for pions, fragmentation functions and theirQ 2 andW 2 dependence. The results are compared with the predictions of the Lund fragmentation model. 相似文献
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G. T. Jones R. W. L. Jones B. W. Kennedy S. W. O'Neale O. Villalobos-Baillie H. Klein D. R. O. Morrison P. Schmid H. Wachsmuth D. B. Miller M. M. Mobayyen S. Wainstein M. Aderholz D. Hantke U. F. Katz J. Kern N. Schmitz W. Wittek H. P. Borner G. Myatt D. Radojicic F. W. Bullock S. Burke 《Zeitschrift fur Physik C Particles and Fields》1993,57(2):197-209
The production of the neutral strange particlesK
0, and
invp and
charged current interactions is studied in an experiment with the Big European Bubble Chamber. Mean multiplicities are measured as a function of the event variablesE
v,W
2 andQ
2 and of the hadron variablesx
F,z andp
T
2
.K
*± (892) and
*± (1385) signals are observed, whereas there is no evidence for
*- (1385) production invp scattering. Forward, backward and total mean multiplicities are found to compare well with the predictions of an empirical model for deep-inelastic reactions in the case of the strange mesonsK
0 andK
*± (892) but less so for the strange baryons ,
and
*± (1385). The strange baryon multiplicities are used to obtain the decuplet to octet baryon production ratio and to assess the probabilities of auu orud system to break up. 相似文献
12.
Aderholz M Aggarwal MM Akbari H Allport PP Badyal SK Ballagh HC Barth M Baton JP Bingham HH Brucker EB Burnstein RA Campbell JR Cence RJ Chatterjee TK Clayton EF Corrigan G Coutures C DeProspo D Devanand De Wolf EA Faulkner PJ Foeth H Fretter WB Gupta VK Hanlon J Harigel G Harris FA Jabiol MA Jacques P Jain V Jones GT Jones MD Kafka T Kalelkar M Kasper P Kohli JM Koller EL Krawiec RJ Lauko M Lys JE Marage P Milburn RH Miller DB Mittra IS Mobayyen MM Moreels J Morrison DR Myatt G Nailor P 《Physical review D: Particles and fields》1992,45(7):2232-2243
13.
G. T. Jones R. W. L. Jones B. W. Kennedy S. W. O'Neale H. Klein D. R. O. Morrison P. Schmid H. Wachsmuth D. B. Miller M. M. Mobayyen S. Wainstein M. Aderholz E. Hoffmann U. F. Katz J. Kern N. Schmitz W. Wittek P. Allport G. Myatt D. Radojicic F. W. Bullock S. Burke 《Zeitschrift fur Physik C Particles and Fields》1987,37(1):25-38
Data obtained with the bubble chamber BEBC at CERN are used for the first significant test of Adler's prediction for the neutrino and antineutrino-proton scattering cross sections at vanishing four-momentum transfer squaredQ 2. An Extended Vector Meson Dominance Model (EVDM) is applied to extrapolate Adler's prediction to experimentally accessible values ofQ 2. The data show good agreement with Adler's prediction forQ 2→0 thus confirming the PCAC hypothesis in the kinematical region of high leptonic energy transfer ν>2 GeV. The good agreement of the data with the theoretical predictions also at higherQ 2, where the EVDM terms are dominant, also supports this model. However, an EVDM calculation without PCAC is clearly ruled out by the data. 相似文献
14.
Zeitschrift für Physik C Particles and Fields - In this paper we present a natural and comprehensive generalisation of the standard factorial moments (F q ) analysis of a multiplicity... 相似文献
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H. J. Grabosch H. H. Kaufmann R. Nahnhauer S. Nowak S. Schlenstedt V. V. Ammosov D. S. Baranov V. I. Hleborad A. A. Ivanilov P. V. Ivanov V. I. Konyushko V. M. Korablev V. A. Korotkov V. V. Makeev A. G. Myagkov N. A. Netyaga A. Yu. Polyarush A. A. Sokolov SKAT Collaboration 《Zeitschrift fur Physik C Particles and Fields》1989,41(4):527-531
All six exclusive single pion production processes from neutrino and antineutrino charged current interactions are studied in the energy range between 3 and 30 GeV. Using a quark model for single pion production from Rein and Sehgal we fitted the aximal mass parameter from total cross sections and compare the results with values from other experiments and the world-averages. 相似文献
17.
G. T. Jones R. W. L. Jones B. W. Kennedy S. W. O'Neale A. Geiser H. Klein D. Kuhn D. R. O. Morrison G. J. van Oldenborgh P. Schmid H. Wachsmuth D. B. Miller M. M. Mobayyen S. Wainstein M. Aderholz E. Hoffmann U. F. Katz J. Kern N. Schmitz W. Wittek G. Myatt D. Radojicic F. Bullock S. Burke 《Zeitschrift fur Physik C Particles and Fields》1987,36(4):593-601
Usind data from avp and \(\bar v\) p experiment with BEBC at CERN, the rates for inclusive production ofD *+,Λ c + andD 0 invp scattering and ofD *? in \(\bar v\) p scattering are measured. Some examples of the exclusive production ofD *+,Λ c + and∑ c ++ are given. The cross section for the reactionvp→μ ? c ++ is estimated. 相似文献
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19.
The first two quantum corrections to the second virial coefficients of the Smith-Thakkar potential are calculated. Parameters for neon and helium, gases in which quantum effects are important, are then determined by fitting to semiempirical dispersion coefficients and experimental second virial coefficients. Viscosity coefficients for both gases and vibrational energy level spacings for the neon dimer are calculated as independent tests of the potentials. Overall agreement with experiment is excellent for neon and moderate for helium. The previously determined parameters for argon are found to be only very slightly perturbed by the inclusion of quantum corrections in the calculated second virial coefficients. 相似文献
20.
M. Holder J. Knobloch J. May H.P. Paar P. Palazzi F. Ranjard D. Schlatter J. Steinberger H. Suter H. Wahl S. Whitaker E.G.H. Williams F. Eisele C. Geweniger K. Kleinknecht G. Spahn H.-J. Willutzki W. Dorth F.L. Navarria 《Physics letters. [Part B]》1977,71(1):222-226
We report on the analysis of inclusive neutral current events produced in neutrino and antineutrino narrow band beams. We find for incident neutrino energies in the range 12–200 GeV and for hadron energies above 12 GeV a neutral to charged current cross-section ratio of Rv = 0.293 ± 0.010 for incident neutrinos, and for antineutrinos. These ratios are consistent with the Weinberg-Salam model, with sin2θw = 0.24 ± 0.02. 相似文献