ISSN:
1434-6052
Source:
Springer Online Journal Archives 1860-2000
Topics:
Physics
Notes:
Abstract An investigation of inclusivepp→π−+⋯ in terms of the covariant Boltzmann factor (BF) including the chemical potential μ indicates a) that the temperatureT increases less rapidly than expected from Stefan's law, b) that a scaling property holds for the fibreball velocity of π− secondaries, leading to a multiplicity law like ∼E cm 1/2 at high energy, and c) that μπ is related to the quark mass: μπ=2m q −m π the quark massm q determined by $$T_{\pi ^ - } $$ at $$\bar pp$$ threshold beingm q =3Tπ≃330 MeV. Because ofthreshold effects $$T_{\bar p}〈 T_{\pi ^ - } $$ , whereas $${{\mu _p } \mathord{\left/ {\vphantom {{\mu _p } {\mu _{\pi ^ - } }}} \right. \kern-\nulldelimiterspace} {\mu _{\pi ^ - } }} \simeq {3 \mathord{\left/ {\vphantom {3 2}} \right. \kern-\nulldelimiterspace} 2}$$ as expected from the quark contents of $$\bar p$$ and π. The antinuclei $$\bar d$$ and $${{\bar t} \mathord{\left/ {\vphantom {{\bar t} {\overline {He^3 } }}} \right. \kern-\nulldelimiterspace} {\overline {He^3 } }}$$ observed inpp events are formed by coalescence of $$\bar p$$ and $$\bar n$$ produced in thepp collision. Semi-empirical formulae are proposed to estimate multiplicities of π−, $$\bar p$$ and antinuclei.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF01588208
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