Abstract.We argue that the two-particle momentum correlation functions of high-multiplicity $ p+p$p+p collisions at the LHC provide a signal for a ground state structure of a quasi equilibrium state of the longitudinally boost-invariant expanding quantum field which lies in the future light cone of a collision. The physical picture is that pions are produced by the expanding quantum emitter with two different scales approximately attributed to the expanding ideal gas in local equilibrium state and ground-state condensate. Specifically, we show that the effect of suppressing the two-particle Bose-Einstein momentum correlation functions increases with increasing transverse momentum of a like-sign pion pair due to different momentum dependence of the corresponding particle emission regions.
Quasi equilibrium state of expanding quantum fields and two-pion Bose-Einstein correlations in pp collisions at the LHC
Published 2018 in European Physical Journal A
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- Publication year
2018
- Venue
European Physical Journal A
- Publication date
2018-12-10
- Fields of study
Physics
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