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arXiv 2402.06327nucl-thnucl-ex
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超相对论重离子碰撞中氘核的椭圆流

Elliptic flow of deuterons in ultrarelativistic heavy-ion collisions

Radka Vozabova, Boris Tomasik

AI总结:

本文通过计算2.76 TeV Pb+Pb碰撞中氘核椭圆流,证明并合产生比直接统计产生更符合实验数据,可用于区分两种产生机制。

摘要:

我们计算了每对碰撞核子-核子质心能量为2.76 TeV的Pb+Pb碰撞中氘核的椭圆流,并表明它可以用来区分直接统计产生和并合产生。来自火球的发射被参数化并调谐以重现质子和π介子的横动量谱及椭圆流。与统计产生相比,并合导致更高的氘核椭圆流,并且与实验数据符合得更好。我们将这一观察归因于在不同方位角发射时产生核子的区域大小不同。

英文摘要:

We calculate the elliptic flow of deuterons in Pb+Pb collisions at 2.76 TeV per colliding nucleon-nucleon pair and show that it can be used to discriminate between direct statistical production and coalescence. The emission from the fireball is parametrized and tuned to reproduce transverse momentum spectra and the elliptic flow of protons and pions. Coalescence leads to higher deuteron elliptic flow than statistical production and agrees better with experimental data. We attribute this observation to the varying size of the nucleon-producing region for the emission in different azimuthal angles.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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