TY - JOUR
T1 - A study of the Z production cross-section in pp collisions at root s=7 TeV using tau final states
AU - Aaij, R.
AU - Beteta, C.A.
AU - Adametz, A.
AU - Adeva, B.
AU - Adinolfi, M.
AU - Adrover, C.
AU - Affolder, A.
AU - Ajaltouni, Z.
AU - Albrecht, J.
AU - Alessio, F.
AU - Alexander, M.
AU - Ali, S.
AU - Alkhazov, G.
AU - Cartelle, P.A.
AU - Alves, A.A.
AU - Amato, S.
AU - Amhis, Y.
AU - Anderlini, L.
AU - Anderson, J.
AU - Appleby, R.B.
AU - Gutierrez, O.A.
AU - Archilli, F.
AU - Artamonov, A.
AU - Artuso, M.
AU - Aslanides, E.
AU - Auriemma, G.
AU - Bachmann, S.
AU - Back, J.J.
AU - Baesso, C.
AU - Baldini, W.
AU - Barlow, R.J.
AU - Barschel, C.
AU - Barsuk, S.
AU - Barter, W.
AU - Bates, A.
AU - Bauer, T.
AU - Bay, A.
AU - Beddow, J.
AU - Bediaga, I.
AU - Belogurov, S.
AU - Belous, K.
AU - Belyaev, I.
AU - Ben-Haim, E.
AU - Benayoun, M.
AU - Bencivenni, G.
AU - Benson, S.
AU - Benton, J.
AU - Berezhnoy, A.
AU - Bernet, R.
AU - van den Brand, J.
AU - LHCb collaboration
PY - 2013/1/1
Y1 - 2013/1/1
N2 - A measurement of the inclusive Z -> tau tau cross-section in p p collisions at root s = 7 TeV is presented based on a dataset of 1.0 fb(-1) collected by the LHCb detector. Candidates for Z -> tau tau decays are identified through reconstructed final states with two muons, a muon and an electron, a muon and a hadron, or an electron and a hadron. The production cross-section for Z bosons, with invariant mass between 60 and 120 GeV/c(2), which decay to tau leptons with transverse momenta greater than 20 GeV/c and pseudorapidities between 2.0 and 4.5, is measured to be sigma(pp)-> Z ->(tau tau) = 71.4 +/- 3.5 +/- 28 +/- 25 pb; the first uncertainty is statistical, the second is systematic, and the third is due to the uncertainty on the integrated luminosity. The ratio of the cross-sections for Z -> tau tau to Z -> mu mu is determined to be 0.93 +/- 0.09, where the uncertainty is the combination of statistical, systematic, and luminosity uncertainties of the two measurements.
AB - A measurement of the inclusive Z -> tau tau cross-section in p p collisions at root s = 7 TeV is presented based on a dataset of 1.0 fb(-1) collected by the LHCb detector. Candidates for Z -> tau tau decays are identified through reconstructed final states with two muons, a muon and an electron, a muon and a hadron, or an electron and a hadron. The production cross-section for Z bosons, with invariant mass between 60 and 120 GeV/c(2), which decay to tau leptons with transverse momenta greater than 20 GeV/c and pseudorapidities between 2.0 and 4.5, is measured to be sigma(pp)-> Z ->(tau tau) = 71.4 +/- 3.5 +/- 28 +/- 25 pb; the first uncertainty is statistical, the second is systematic, and the third is due to the uncertainty on the integrated luminosity. The ratio of the cross-sections for Z -> tau tau to Z -> mu mu is determined to be 0.93 +/- 0.09, where the uncertainty is the combination of statistical, systematic, and luminosity uncertainties of the two measurements.
KW - Hadron-Hadron Scattering
U2 - 10.1007/JHEP01(2013)111
DO - 10.1007/JHEP01(2013)111
M3 - Article
SN - 1029-8479
JO - Journal of High Energy Physics
JF - Journal of High Energy Physics
IS - 1
M1 - 111
ER -