Two-particle rapidity correlations in strongly intensive quantities within string model

15 Sept 2025, 15:20
20m
LHEP-215/347 - комната семинаров (VBLHEP)

LHEP-215/347 - комната семинаров

VBLHEP

75
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20 min. Relativistic heavy ion collisions Relativistic heavy ion collisions

Speaker

Andronov, Evgeny (Saint Petersburg State University)

Description

Studies of the phase diagram of strongly interacting matter created in nuclear collisions are typically carried out using event-by-event fluctuations. The strongly intensive quantities form a family of promising observables that are free from trivial volume fluctuations. In the case of multiplicity fluctuations over separate rapidity intervals, the behavior of the corresponding strongly intensive quantity is analyzed using the color string approach. At short distances, it is mostly sensitive to the details of two-particle correlations due to string fragmentation. Conversely, long-range effects are dictated by collective interactions between strings.

In this report we model these two phenomena by the simulated annealing algorithm and string fusion. We present how interplay between short-range and long-range correlations breaks the property of strong intensity.

The author acknowledges Saint-Petersburg State University for a research project 103821868.

Author

Andronov, Evgeny (Saint Petersburg State University)

Presentation materials