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Abudin
n, F.*; 谷田 聖; Belle II Collaboration*; 他420名*
Chinese Physics C, 44(2), p.021001_1 - 021001_12, 2020/02
被引用回数：23 パーセンタイル：93.93(Physics, Nuclear)From April to July 2018, a data sample at the peak energy of the 
resonance was collected with the Belle II detector at the SuperKEKB electron-positron collider. This is the first data sample of the Belle II experiment. Using Bhabha and digamma events, we measure the integrated luminosity of the data sample to be (
) pb
, where the first uncertainty is statistical and the second is systematic. This work provides a basis for future luminosity measurements at Belle II.
= 62.4 and 200 GeVAdare, A.*; 今井 憲一; 佐藤 進; 谷田 聖; PHENIX Collaboration*; 他420名*
Physical Review C, 92(3), p.034913_1 - 034913_20, 2015/09
被引用回数：20 パーセンタイル：78.02(Physics, Nuclear)We have studied the dependence of azimuthal anisotropy 
for inclusive and identified charged hadrons in Au + Au and Cu + Cu collisions on collision energy, species, and centrality. The values of as a function of transverse momentum 
and centrality in Au+Au collisions at = 200 and 62.4 GeV are the same within uncertainties. However, in Cu + Cu collisions we observe a decrease in values as the collision energy is reduced from 200 to 62.4 GeV. The decrease is larger in the more peripheral collisions. By examining both Au + Au and Cu + Cu collisions we find that depends both on eccentricity and the number of participants, 
. We observe that divided by eccentricity (
) monotonically increases with and scales as 
. The Cu + Cu data at 62.4 GeV falls below the other scaled data. For identified hadrons, divided by the number of constituent quarks 
is independent of hadron species as a function of transverse kinetic energy 
between 
GeV. Combining all of the above scaling and normalizations, we observe a near-universal scaling, with the exception of the Cu + Cu data at 62.4 GeV, of 
vs 
for all measured particles.
