Elliptic flow in small systems due to elliptic gluon distributions?
Copyright policy )Elliptic flow in small systems due to elliptic gluon distributions?
We investigate the contributions from the so-called elliptic gluon Wigner distributions to the rapidity and azimuthal correlations of particles produced in high energy $pA$ collisions by applying the double parton scattering mechanism. We compute the `elliptic flow' parameter $v_2$ as a function of the transverse momentum and rapidity, and find qualitative agreement with experimental observations. This shall encourage further developments with more rigorous studies of the elliptic gluon distributions and their applications in hard scattering processes in $pp$ and $pA$ collisions.
8 pages, 8 figures; v2 discussion in the numerical section modified, results unchanged, to appear in Phys. Lett. B; v3 one reference added
- Kyoto University Japan
- Yukawa Institute for Theoretical Physics/Kyoto University Japan
- Central China Normal University China (People's Republic of)
- University of California, San Francisco United States
- Lawrence Berkeley National Laboratory United States
Nuclear and High Energy Physics, QC1-999, 5106 Nuclear and Plasma Physics (for-2020), Particle and Plasma Physics (for), FOS: Physical sciences, 0201 Astronomical and Space Sciences (for), 51 Physical sciences (for-2020), Atomic, Mathematical Sciences, Particle and Plasma Physics, High Energy Physics - Phenomenology (hep-ph), 0105 Mathematical Physics (for), Nuclear, Mathematical Physics, 5107 Particle and High Energy Physics (for-2020), Physics, 51 Physical Sciences (for-2020), Molecular, Nuclear & Particles Physics (science-metrix), Particle and High Energy Physics, hep-ph, Nuclear and Plasma Physics, Nuclear & Particles Physics, 49 Mathematical sciences (for-2020), High Energy Physics - Phenomenology, Physical Sciences, 0202 Atomic, 4902 Mathematical Physics (for-2020), 49 Mathematical Sciences (for-2020), Astronomical and Space Sciences
Nuclear and High Energy Physics, QC1-999, 5106 Nuclear and Plasma Physics (for-2020), Particle and Plasma Physics (for), FOS: Physical sciences, 0201 Astronomical and Space Sciences (for), 51 Physical sciences (for-2020), Atomic, Mathematical Sciences, Particle and Plasma Physics, High Energy Physics - Phenomenology (hep-ph), 0105 Mathematical Physics (for), Nuclear, Mathematical Physics, 5107 Particle and High Energy Physics (for-2020), Physics, 51 Physical Sciences (for-2020), Molecular, Nuclear & Particles Physics (science-metrix), Particle and High Energy Physics, hep-ph, Nuclear and Plasma Physics, Nuclear & Particles Physics, 49 Mathematical sciences (for-2020), High Energy Physics - Phenomenology, Physical Sciences, 0202 Atomic, 4902 Mathematical Physics (for-2020), 49 Mathematical Sciences (for-2020), Astronomical and Space Sciences
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