Midrapidity antiproton-to-proton ratio in pp collisons at √s=0.9 and 7 TeV measured by the ALICE experiment
The ratio of the yields of antiprotons to protons in pp collisions has been measured by the ALICE experiment at √s=0.9 and 7 TeV during the initial running periods of the Large Hadron Collider. The measurement covers the transverse momentum interval 0.45<pt<1.05 GeV/c and rapidity |y|<0.5....
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| Hauptverfasser: | , , , , , , , , , , , , , , , |
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| Dokumenttyp: | Article (Journal) |
| Sprache: | Englisch |
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12 August 2010
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| In: |
Physical review letters
Year: 2010, Jahrgang: 105, Heft: 7, Pages: 1-12 |
| ISSN: | 1079-7114 |
| DOI: | 10.1103/PhysRevLett.105.072002 |
| Online-Zugang: | Verlag, lizenzpflichtig, Volltext: https://doi.org/10.1103/PhysRevLett.105.072002 Verlag, lizenzpflichtig, Volltext: https://link.aps.org/doi/10.1103/PhysRevLett.105.072002 
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| Verfasserangaben: | K. Aamodt et al. (ALICE Collaboration)* |
MARC
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| 520 | |a The ratio of the yields of antiprotons to protons in pp collisions has been measured by the ALICE experiment at √s=0.9 and 7 TeV during the initial running periods of the Large Hadron Collider. The measurement covers the transverse momentum interval 0.45<pt<1.05 GeV/c and rapidity |y|<0.5. The ratio is measured to be R|y|<0.5=0.957±0.006(stat)±0.014(syst) at 0.9 TeV and R|y|<0.5=0.991±0.005(stat)±0.014(syst) at 7 TeV and it is independent of both rapidity and transverse momentum. The results are consistent with the conventional model of baryon-number transport and set stringent limits on any additional contributions to baryon-number transfer over very large rapidity intervals in pp collisions. | ||
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