Strong P, CP, T violations in heavy-ion collisions

Morley, P. D.; Schmidt, Iván

doi:10.1007/bf01551807

Cited by 78 publications

(76 citation statements)

References 4 publications

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“…Figure 1(a) presents the centrality dependence of the three-particle correlator, defined in Eq. (2). The correlations of the same charge pairs for the positive-positive and negative-negative combinations are found to be consistent within statistical uncertainties and are combined into one set of points, labeled same.…”

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confidence: 75%

“…The centrality dependence of the threeparticle correlator defined in Eq. (2). The circles indicate the ALICE results obtained from the cumulant analysis.…”

Section: Fig 2 (Color Online)mentioning

confidence: 99%

“…The possibility to observe parity violation in the strong interaction using relativistic heavy-ion collisions has been discussed for many years [1][2][3]. In quantum chromodynamics (QCD), this symmetry violation originates in the interaction between quarks and topologically nontrivial gluonic fields, instantons, and sphalerons [4].…”

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confidence: 99%

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Charge separation relative to the reaction plane in Pb-Pb collisions atsNN=2.76 TeV

Abelev¹,

Adam²,

Adamová³

et al. 2013

Phys. Rev. Lett.

245

152

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Measurements of charge-dependent azimuthal correlations with the ALICE detector at the LHC are reported for Pb-Pb collisions at ffiffiffiffiffiffiffiffi s NN p ¼ 2:76 TeV. Two-and three-particle charge-dependent azimuthal correlations in the pseudorapidity range j j < 0:8 are presented as a function of the collision centrality, particle separation in pseudorapidity, and transverse momentum. A clear signal compatible with a chargedependent separation relative to the reaction plane is observed, which shows little or no collision energy dependence when compared to measurements at RHIC energies. This provides a new insight for understanding the nature of the charge-dependent azimuthal correlations observed at RHIC and LHC energies.

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mentioning

confidence: 75%

“…The centrality dependence of the threeparticle correlator defined in Eq. (2). The circles indicate the ALICE results obtained from the cumulant analysis.…”

Section: Fig 2 (Color Online)mentioning

confidence: 99%

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Charge separation relative to the reaction plane in Pb-Pb collisions atsNN=2.76 TeV

Abelev¹,

Adam²,

Adamová³

et al. 2013

Phys. Rev. Lett.

245

152

View full text Add to dashboard Cite

show abstract

“…However, there is no first-principles reason why P and CP violation should not exist in strong interactions. P and CP violation as a general feature of quantum field theories was first explored in the 1970s [6,7], and a proposal to use heavy-ion collisions as a tool for studying P and CP violation first appeared as early as the 1980s [8]. Specific proposals for a search for local P-violating effects in heavy-ion collisions appeared in the last decade [9][10][11][12][13][14].…”

Section: Introductionmentioning

confidence: 99%

Charge-dependent flow and the search for the chiral magnetic wave in Pb-Pb collisions atsNN=2.76TeV

Adam¹,

Adamová²,

Aggarwal³

et al. 2016

Phys. Rev. C

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We report on measurements of a charge-dependent flow using a novel three-particle correlator with ALICE in Pb-Pb collisions at the CERN Large Hadron Collider (LHC), and discuss the implications for observation of local parity violation and the chiral magnetic wave (CMW) in heavy-ion collisions. Charge-dependent flow is reported for different collision centralities as a function of the event charge asymmetry. While our results are in qualitative agreement with expectations based on the CMW, the nonzero signal observed in higher harmonics correlations indicates a possible significant background contribution. We also present results on a differential correlator, where the flow of positive and negative charges is reported as a function of the mean charge of the particles and their pseudorapidity separation. We argue that this differential correlator is better suited to distinguish the differences in positive and negative charges expected due to the CMW and the background effects, such as local charge conservation coupled with strong radial and anisotropic flow.

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“…On the other hand, the CMW calculations demonstrate a similar centrality dependency of the slope parameter, though quantitative comparison between data and theory requires further works on both sides to match the kinematic regions of the analyses. The concept of Local Parity (P) Violation (LPV) in high-energy heavy ion collisions was brought up by Lee et al [26,27,28] and elaborated by Kharzeev et al [29]. In non-central collisions such a P-odd domain can manifest itself via preferential same charge particle emission for particles moving along the system's angular momentum, due to the Chiral Magnetic Effect [2,3].…”

Section: Introductionmentioning

confidence: 99%

Search for Chiral Magnetic Effects in High-Energy Nuclear Collisions

Wang

2013

Nuclear Physics A

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We present measurements of pion elliptic flow (v 2 ) in Au+Au collisions at √ s NN = 200, 62.4, 39, 27 and 19.6 GeV, as a function of event-by-event charge asymmetry (A ± ), based on data from the STAR experiment at RHIC. We find that π − (π + ) elliptic flow linearly increases (decreases) with charge asymmetry for most centrality bins and for all the beam energies under study. The slope parameter (r) from v 2 (A ± ) difference between π − and π + shows a centrality dependency similar to calculations of the Chiral Magnetic Wave. The measurements of charge separation with respect to the reaction plane in search of Local Parity Violation and the Chiral Magnetic Effect are also presented for Au+Au collisions at √ s NN =

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Strong P, CP, T violations in heavy-ion collisions

Cited by 78 publications

References 4 publications

Charge separation relative to the reaction plane in Pb-Pb collisions atsNN=2.76 TeV

Charge separation relative to the reaction plane in Pb-Pb collisions atsNN=2.76 TeV

Charge-dependent flow and the search for the chiral magnetic wave in Pb-Pb collisions atsNN=2.76TeV

Search for Chiral Magnetic Effects in High-Energy Nuclear Collisions

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