Cross section and double helicity asymmetry for η mesons and their comparison to π0 production in p + p collisions at √s = 200 GeV
Use this link to cite this item : https://ir.lib.hiroshima-u.ac.jp/00045823
| ID | 45823 |
| file | |
| creator |
PHENIX Collaboration
Hachiya, T.
Harada, H.
Haruna, K.
Kijima, K. M.
Nakamiya, Y.
Nakamura, T.
Ouchida, M.
Sakata, H.
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| NDC |
Physics
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| abstract | Measurements of double-helicity asymmetries in inclusive hadron production in polarized p + p collisions are sensitive to helicity-dependent parton distribution functions, in particular, to the gluon helicity distribution, Δg. This study focuses on the extraction of the double-helicity asymmetry in η production (p^^→ + p^^→ → η + X), the η cross section, and the η/π0 cross section ratio. The cross section and ratio measurements provide essential input for the extraction of fragmentation functions that are needed to access the helicity-dependent parton distribution functions.
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| journal title |
Physical Review D
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| volume | Volume 83
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| issue | Issue 3
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| start page | 032001-1
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| end page | 032001-11
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| date of issued | 2011-02-01
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| publisher | American Physical Society
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| issn | 0556-2821
2470-0010
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| ncid | |
| publisher doi | |
| language |
eng
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| nii type |
Journal Article
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| HU type |
Journal Articles
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| DCMI type | text
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| format | application/pdf
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| text version | publisher
|
| rights | Copyright (c) 2011 American Physical Society
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| department |
Graduate School of Science
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