Learn More
Forming interspecific associations is one of many strategies adopted by primates in order to avoid predation. In addition to improved predator detection and avoidance, benefits of interspecific associations relate to improved foraging efficiency. In this study we tested these two hypotheses explaining associations between the endangered golden-headed lion(More)
Two-pion correlations are studied for pions of like charge in K + p and + p collisions at 250 GeV/c. An enhanced production is observed at small momentum diierence and is attributed to Bose-Einstein interference between identical particles. A systematic study is presented on the innuence of parametrization and reference sample. Interpreted in terms of the(More)
  • Aachen-Antwerp, Brussels-Berlin, Zeuthen )-Helsinki-Krakow-Moscow-Nijmegen-Rio De, Janeiro-Serpukhov-Warsaw-Yerevan V V Aivazyan, I V Ajinenko, Yu A Belokopytov +41 others
  • 2007
Forward-backward multiplicity correlations in + p, K + p and pp collisions at 250 GeV/c (p s=22 GeV) are given for all charges and for the diierent charge combinations. The correlations are found to be caused predominantly by centrally produced particles. It is demonstrated that this result is in agreement with observations at the ISR and the CERN p(More)
  • V V Aivazyan, I V Ajinenko, Yu A Belokopytov, H Bia Lkowska, H B Ottcher, F Botterweck +33 others
  • 2007
The average transverse momentum hp T i has been studied as a function of the charge multiplicity n in + p, K + p and pp collisions at 250 GeV/c (p s 22 GeV) and compared to that at other energies. The eeect of cuts in rapidity and p T is demonstrated. A comparison to currently used low-p T models shows that the two-chain Dual Parton Model underestimates the(More)
  • Aachen-Antwerp, Brussels-Berlin, Zeuthen )-Helsinki-Krakow-Mosco W-Nijmegen-Rio De, Janeiro-Serpukhov-Warsaw-Yerevan M Adamus, N M Agababyan, I V Ajinenko +47 others
  • 2007
The charged particle multiplicity distribution has been studied for non-single-diiractive + p and pp collisions at p s = 22 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(More)
The angular dependence of Bose-Einstein correlations is studied in interactions of + and K + mesons with protons and nuclei at 250 GeV/c. The pion source is found to be elongated along the interaction axis in the c.m.s., with the ratio a between transverse and longitudinal dimension equal to 0:55 0:06 for the case of proton, 0:53 0:13 for the case of Al and(More)
Predation risk may affect the way species use their habitat. Interspecific associations can help to improve predator detection and avoidance. The golden-headed lion tamarin (Leontopithecus chrysomelas) is an endangered primate of the Brazilian Atlantic Forest whose geographical range is dominated by shaded cacao agroforest (cabruca), where predation risk is(More)
  • Aachen-Antwerp, Brussels-Berlin, Zeuthen )-Helsinki-Krakow-Moscow-Nijmegen-Rio De, Janeiro-Serpukhov-Warsaw-Yerevan M Adamus, N M Agababyan, I V Ajinenko +38 others
  • 2007
The charged particle multiplicity distribution is studied for non-single-diiractive + p collisions at p s = 22 GeV, in central rapidity intervals separated from the outer regions by empty gaps. A priori unexpectedly, also these distributions yield good negative binomial ts. The variation of the parameter 1=k as a function of the gap size can be understood(More)
A collective \sea-gull" eeect is observed for a system of fast hadrons produced in the fragmentation regions of non-diiractive + p-interactions at 250 GeV/c. The eeect is not reproduced by the FRITIOF fragmentation model in its details. It is demonstrated that hard-like processes, both in the collision phase and in the fragmentation phase, are not properly(More)
  • 1