CERN 超级质子同步加速器上中央 $^7$Be+$^9$Be 碰撞中的方位角与赝快度两粒子关联
核实验
2021-01-25 v2 高能物理 - 实验
摘要
本文给出二维 空间中带电强子对关联的测量。该分析基于 NA61/SHINE 探测器在 CERN SPS 上观测到的总计 3000 万次中央 Be+Be 碰撞，入射束动量为 19、30、40、75 与 150 GeV/。测量分别对异号和同号电荷强子对独立进行。 关联函数与类似束流下每核子相似动量的 p+p 相互作用类似分析的结果进行了比较。背对背关联的总体趋势在中央 Be+Be 碰撞与 p+p 相互作用中相似，但因组合背景增加而幅度受抑。将 EPOS 与 UrQMD 模型的预测与测量进行比较。在中央 Be+Be 碰撞中观察到 附近增强随入射能量的演化。两模型均未预测到此现象，且在相同每核子动量下的质子-质子碰撞中几乎不存在。
引用
@article{arxiv.2006.02153,
title = {Two-particle correlations in azimuthal angle and pseudorapidity in central $^7$Be+$^9$Be collisions at the CERN Super Proton Synchrotron},
author = {SHINE Collaboration and A. Aduszkiewicz and E. V. Andronov and T. Antićić and V. Babkin and M. Baszczyk and S. Bhosale and A. Blondel and M. Bogomilov and A. Brandin and A. Bravar and W. Bryliński and J. Brzychczyk and M. Buryakov and O. Busygina and A. Bzdak and H. Cherif and M. Ćirković and M. Csanad and J. Cybowska and T. Czopowicz and A. Damyanova and N. Davis and M. Deliyergiyev and M. Deveaux and A. Dmitriev and W. Dominik and P. Dorosz and J. Dumarchez and R. Engel and G. A. Feofilov and L. Fields and Z. Fodor and A. Garibov and M. Gaździcki and O. Golosov and V. Golovatyuk and M. Golubeva and K. Grebieszkow and F. Guber and A. Haesler and S. N. Igolkin and S. Ilieva and A. Ivashkin and S. R. Johnson and K. Kadija and N. Kargin and E. Kashirin and M. Kiełbowicz and V. A. Kireyeu and V. Klochkov and V. I. Kolesnikov and D. Kolev and A. Korzenev and V. N. Kovalenko and S. Kowalski and M. Koziel and A. Krasnoperov and W. Kucewicz and M. Kuich and A. Kurepin and D. Larsen and A. László and T. V. Lazareva and M. Lewicki and K. Łojek and V. V. Lyubushkin and M. Maćkowiak-Pawłowska and Z. Majka and B. Maksiak and A. I. Malakhov and A. Marcinek and A. D. Marino and K. Marton and H. -J. Mathes and T. Matulewicz and V. Matveev and G. L. Melkumov and A. O. Merzlaya and B. Messerly and Ł. Mik and S. Morozov and S. Mrówczyński and Y. Nagai and M. Naskręt and V. Ozvenchuk and V. Paolone and O. Petukhov and R. Płaneta and P. Podlaski and B. A. Popov and B. Porfy and M. Posiadała-Zezula and D. S. Prokhorova and D. Pszczel and S. Puławski and J. Puzović and M. Ravonel and R. Renfordt and D. Röhrich and E. Rondio and M. Roth and B. T. Rumberger and M. Rumyantsev and A. Rustamov and M. Rybczynski and A. Rybicki and A. Sadovsky and K. Schmidt and I. Selyuzhenkov and A. Yu. Seryakov and P. Seyboth and M. Słodkowski and P. Staszel and G. Stefanek and J. Stepaniak and M. Strikhanov and H. Ströbele and T. Šuša and A. Taranenko and A. Tefelska and D. Tefelski and V. Tereshchenko and A. Toia and R. Tsenov and L. Turko and R. Ulrich and M. Unger and D. Uzhva and F. F. Valiev and D. Veberič and V. V. Vechernin and A. Wickremasinghe and Z. Włodarczyk and K. Wojcik and O. Wyszyński and E. D. Zimmerman and R. Zwaska},
journal= {arXiv preprint arXiv:2006.02153},
year = {2021}
}
备注
28 pages, 17 figures, applied corrections after journal review