Title
Midrapidity antiproton-to-proton ratio in pp collisons at √s=0.9 and 7 TeV measured by the ALICE experiment
Date Issued
12 August 2010
Access level
open access
Resource Type
journal article
Author(s)
Aamodt K.
Abel N.
Abeysekara U.
Abrahantes Quintana A.
Abramyan A.
Adamová D.
Aggarwal M.M.
Aglieri Rinella G.
Agocs A.G.
Aguilar Salazar S.
Ahammed Z.
Ahmad A.
Ahmad N.
Ahn S.U.
Akimoto R.
Akindinov A.
Aleksandrov D.
Alessandro B.
Alfaro Molina R.
Alici A.
Almaráz Aviña E.
Alme J.
Alt T.
Altini V.
Altinpinar S.
Andrei C.
Andronic A.
Anelli G.
Angelov V.
Anson C.
Antičić T.
Antinori F.
Antinori S.
Antipin K.
Antończyk D.
Antonioli P.
Anzo A.
Aphecetche L.
Appelshäuser H.
Arcelli S.
Arceo R.
Arend A.
Armesto N.
Arnaldi R.
Aronsson T.
Arsene I.C.
Asryan A.
Augustinus A.
Averbeck R.
Awes T.C.
Äystö J.
Azmi M.D.
Bablok S.
Bach M.
Badalà A.
Baek Y.W.
Bagnasco S.
Bailhache R.
Bala R.
Baldisseri A.
Baldit A.
Bán J.
Barbera R.
Barnaföldi G.G.
Barnby L.S.
Barret V.
Bartke J.
Barile F.
Basile M.
Basmanov V.
Bastid N.
Bathen B.
Batigne G.
Batyunya B.
Baumann C.
Bearden I.G.
Becker B.
Belikov I.
Bellwied R.
Belmont-Moreno E.
Belogianni A.
Benhabib L.
Beole S.
Berceanu I.
Bercuci A.
Berdermann E.
Berdnikov Y.
Betev L.
Bhasin A.
Bhati A.K.
Bianchi L.
Bianchi N.
Bianchin C.
Bielčík J.
Bielčíková J.
Bilandzic A.
Bimbot L.
Biolcati E.
Blanc A.
Blanco F.
Publisher(s)
American Physical Society
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<pt<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.
Volume
105
Issue
7
Language
English
OCDE Knowledge area
Física de partículas, Campos de la Física
Física atómica, molecular y química
Scopus EID
2-s2.0-77955626838
Source
Physical Review Letters
ISSN of the container
00319007
Sponsor(s)
Science and Technology Facilities Council - GRIDPP, ST/F011989/1.
Sources of information:
Directorio de Producción Científica
Scopus