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<1.05GeV/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. © 2010 The American Physical Society.

Aamodt K., Abel N., Abeysekara U., Abrahantes Quintana A., Abramyan A., Adamova D., et al. (2010). Midrapidity antiproton-to-proton ratio in pp collisons at √s=0.9 and 7 TeV measured by the ALICE experiment. PHYSICAL REVIEW LETTERS, 105(7), 1-12 [10.1103/PhysRevLett.105.072002].

Midrapidity antiproton-to-proton ratio in pp collisons at √s=0.9 and 7 TeV measured by the ALICE experiment

Ahmad A.;Alici A.;Arcelli S.;Cifarelli L.;Noferini F.;Pinazza O.;Preghenella R.;Scioli G.;Zichichi A.;
2010

Abstract

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<1.05GeV/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. © 2010 The American Physical Society.
2010
Aamodt K., Abel N., Abeysekara U., Abrahantes Quintana A., Abramyan A., Adamova D., et al. (2010). Midrapidity antiproton-to-proton ratio in pp collisons at √s=0.9 and 7 TeV measured by the ALICE experiment. PHYSICAL REVIEW LETTERS, 105(7), 1-12 [10.1103/PhysRevLett.105.072002].
Aamodt K.; Abel N.; Abeysekara U.; Abrahantes Quintana A.; Abramyan A.; Adamova D.; Aggarwal M.M.; Aglieri Rinella G.; Agocs A.G.; Aguilar Salazar S.;...espandi
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11585/900137
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