Transverse spherocity classifies heavy-ion collision events to suppress backgrounds in chiral magnetic effect searches, with AMPT simulations showing higher scaled signals in isotropic events.
Estimate of the CME signal in heavy-ion collisions from measurements relative to the participant and spectator flow planes
2 Pith papers cite this work. Polarity classification is still indexing.
abstract
An interpretation of the charge dependent correlations sensitive to the Chiral Magnetic Effect (CME) -- the separation of the electric charges along the system magnetic field (across the reaction plane) -- is ambiguous due to a possible large background (non-CME) effects. The background contribution is proportional to the elliptic flow $v_2$; it is the largest in measurements relative to the participant plane, and is smaller in measurements relative to the flow plane determined by spectators, where the CME signal, on opposite, is likely larger. In this note I discuss a possible strategy for corresponding experimental measurements, and list and evaluate different assumptions related to this approach.
citation-role summary
citation-polarity summary
years
2026 2verdicts
UNVERDICTED 2roles
background 1polarities
background 1representative citing papers
The hexadecapole component of Δγ(φ_pair) is proposed as a CME-sensitive and background-insensitive observable based on magnetic field fluctuations in heavy-ion collision models.
citing papers explorer
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Probing the chiral magnetic effect via transverse spherocity event classification in relativistic heavy-ion collisions
Transverse spherocity classifies heavy-ion collision events to suppress backgrounds in chiral magnetic effect searches, with AMPT simulations showing higher scaled signals in isotropic events.