Azimuthal Single-Spin Asymmetries of Charged Pions in Jets in s = 200 GeV p↑p Collisions at STAR

Single spin asymmetry measurements ( A U T ) of the azimuthal distribution of charged pions inside jets produced in transversely polarized proton collisions are sensitive to the transversity distribution and the Collins fragmentation function. The STAR Detector at the Relativistic Heavy Ion Collider...

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Bibliographic Details
Published in:International journal of modern physics. Conference series 2016, Vol.40, p.1660040
Main Authors: Adkins, J. Kevin, Drachenberg, James L.
Format: Article
Language:English
Subjects:
Collisions
Heavy ions
Pions
Relativistic Heavy Ion Collider
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Summary:Single spin asymmetry measurements ( A U T ) of the azimuthal distribution of charged pions inside jets produced in transversely polarized proton collisions are sensitive to the transversity distribution and the Collins fragmentation function. The STAR Detector at the Relativistic Heavy Ion Collider is well suited for these types of measurements as it is capable of full jet reconstruction and charged pion identification in the mid-rapidity region ( | η | < 1 ). We report here the first observation of Collins A U T asymmetries in s = 2 0 0 GeV p ↑ p collisions.
ISSN:2010-1945
2010-1945
DOI:10.1142/S2010194516600405