Longitudinal double-spin asymmetry and cross section for inclusive neutral pion production at midrapidity in polarized proton collisions at √s = 200 GeV
We report a measurement of the longitudinal double-spin asymmetry ALL and the differential cross section for inclusive π0 production at midrapidity in polarized proton collisions at √s=200 GeV. The cross section was measured over a transverse momentum range of 1 < p[subscript T] < 17 GeV/c and...
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| Format: | Article |
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American Physical Society (APS)
2018
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| Online Access: | http://hdl.handle.net/1721.1/116255 https://orcid.org/0000-0002-5515-4563 https://orcid.org/0000-0002-0031-1963 https://orcid.org/0000-0002-9107-6312 https://orcid.org/0000-0001-5839-707X |
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| author | Balewski, Jan T. Betancourt, Michael Joseph Corliss, Ross Cameron Hays-Wehle, James Prewitt Hoffman, Alan Michael Jones, Christopher LaDon Kocoloski, Adam Philip Leight, William Axel Milner, Richard G Redwine, Robert P Sakuma, Tai Seele, Joseph Patrick Surrow, Bernd van Nieuwenhuizen, Gerrit J Walker, Matthew H |
| author2 | Massachusetts Institute of Technology. Department of Physics |
| author_facet | Massachusetts Institute of Technology. Department of Physics Balewski, Jan T. Betancourt, Michael Joseph Corliss, Ross Cameron Hays-Wehle, James Prewitt Hoffman, Alan Michael Jones, Christopher LaDon Kocoloski, Adam Philip Leight, William Axel Milner, Richard G Redwine, Robert P Sakuma, Tai Seele, Joseph Patrick Surrow, Bernd van Nieuwenhuizen, Gerrit J Walker, Matthew H |
| author_sort | Balewski, Jan T. |
| collection | MIT |
| description | We report a measurement of the longitudinal double-spin asymmetry ALL and the differential cross section for inclusive π0 production at midrapidity in polarized proton collisions at √s=200 GeV. The cross section was measured over a transverse momentum range of 1 < p[subscript T] < 17 GeV/c and found to be in good agreement with a next-to-leading order perturbative QCD calculation. The longitudinal double-spin asymmetry was measured in the range of 3.7 < pT < 11 GeV/c and excludes a maximal positive gluon polarization in the proton. The mean transverse momentum fraction of π0's in their parent jets was found to be around 0.7 for electromagnetically triggered events. |
| first_indexed | 2024-09-23T09:48:42Z |
| format | Article |
| id | mit-1721.1/116255 |
| institution | Massachusetts Institute of Technology |
| last_indexed | 2024-09-23T09:48:42Z |
| publishDate | 2018 |
| publisher | American Physical Society (APS) |
| record_format | dspace |
| spelling | mit-1721.1/1162552022-09-26T13:53:06Z Longitudinal double-spin asymmetry and cross section for inclusive neutral pion production at midrapidity in polarized proton collisions at √s = 200 GeV Balewski, Jan T. Betancourt, Michael Joseph Corliss, Ross Cameron Hays-Wehle, James Prewitt Hoffman, Alan Michael Jones, Christopher LaDon Kocoloski, Adam Philip Leight, William Axel Milner, Richard G Redwine, Robert P Sakuma, Tai Seele, Joseph Patrick Surrow, Bernd van Nieuwenhuizen, Gerrit J Walker, Matthew H Massachusetts Institute of Technology. Department of Physics Massachusetts Institute of Technology. Laboratory for Nuclear Science Balewski, Jan T. Betancourt, Michael Joseph Corliss, Ross Cameron Hays-Wehle, James Prewitt Hoffman, Alan Michael Jones, Christopher LaDon Kocoloski, Adam Philip Leight, William Axel Milner, Richard G Redwine, Robert P Sakuma, Tai Seele, Joseph Patrick Surrow, Bernd van Nieuwenhuizen, Gerrit J Walker, Matthew H We report a measurement of the longitudinal double-spin asymmetry ALL and the differential cross section for inclusive π0 production at midrapidity in polarized proton collisions at √s=200 GeV. The cross section was measured over a transverse momentum range of 1 < p[subscript T] < 17 GeV/c and found to be in good agreement with a next-to-leading order perturbative QCD calculation. The longitudinal double-spin asymmetry was measured in the range of 3.7 < pT < 11 GeV/c and excludes a maximal positive gluon polarization in the proton. The mean transverse momentum fraction of π0's in their parent jets was found to be around 0.7 for electromagnetically triggered events. United States. Department of Energy. Office of Nuclear Physics National Science Foundation (U.S.) United States. Department of Energy. High Energy Physics Division Alfred P. Sloan Foundation 2018-06-12T15:12:57Z 2018-06-12T15:12:57Z 2009-12 2018-02-23T21:32:15Z Article http://purl.org/eprint/type/JournalArticle 1550-7998 1550-2368 http://hdl.handle.net/1721.1/116255 Abelev, B. I., et al. “Longitudinal Double-Spin Asymmetry and Cross Section for Inclusive Neutral Pion Production at Midrapidity in Polarized Proton Collisions at √s = 200 GeV.” Physical Review D, vol. 80, no. 11, Dec. 2009. © 2009 The American Physical Society. https://orcid.org/0000-0002-5515-4563 https://orcid.org/0000-0002-0031-1963 https://orcid.org/0000-0002-9107-6312 https://orcid.org/0000-0001-5839-707X http://dx.doi.org/10.1103/PhysRevD.80.111108 Physical Review D Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use. application/pdf American Physical Society (APS) APS |
| spellingShingle | Balewski, Jan T. Betancourt, Michael Joseph Corliss, Ross Cameron Hays-Wehle, James Prewitt Hoffman, Alan Michael Jones, Christopher LaDon Kocoloski, Adam Philip Leight, William Axel Milner, Richard G Redwine, Robert P Sakuma, Tai Seele, Joseph Patrick Surrow, Bernd van Nieuwenhuizen, Gerrit J Walker, Matthew H Longitudinal double-spin asymmetry and cross section for inclusive neutral pion production at midrapidity in polarized proton collisions at √s = 200 GeV |
| title | Longitudinal double-spin asymmetry and cross section for inclusive neutral pion production at midrapidity in polarized proton collisions at √s = 200 GeV |
| title_full | Longitudinal double-spin asymmetry and cross section for inclusive neutral pion production at midrapidity in polarized proton collisions at √s = 200 GeV |
| title_fullStr | Longitudinal double-spin asymmetry and cross section for inclusive neutral pion production at midrapidity in polarized proton collisions at √s = 200 GeV |
| title_full_unstemmed | Longitudinal double-spin asymmetry and cross section for inclusive neutral pion production at midrapidity in polarized proton collisions at √s = 200 GeV |
| title_short | Longitudinal double-spin asymmetry and cross section for inclusive neutral pion production at midrapidity in polarized proton collisions at √s = 200 GeV |
| title_sort | longitudinal double spin asymmetry and cross section for inclusive neutral pion production at midrapidity in polarized proton collisions at √s 200 gev |
| url | http://hdl.handle.net/1721.1/116255 https://orcid.org/0000-0002-5515-4563 https://orcid.org/0000-0002-0031-1963 https://orcid.org/0000-0002-9107-6312 https://orcid.org/0000-0001-5839-707X |
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