Measurement of forward w -> e nu production in pp collisions at root s=8 tev
文献类型：期刊论文
| 作者 | Aaij, R.41; Adeva, B.40; Adinolfi, M.49; Ajaltouni, Z.5; Akar, S.6; Albrecht, J.10; Alessio, F.41; Alexander, M.54; Ali, S.44; Alkhazov, G.31 |
| 刊名 | Journal of high energy physics
 |
| 出版日期 | 2016-10-07 |
| 期号 | 10页码:29 |
| ISSN号 | 1029-8479 |
| 关键词 | Electroweak interaction Hadron-hadron scattering (experiments) Qcd |
| DOI | 10.1007/jhep10(2016)030 |
| 通讯作者 | Aaij, r.(marek.sirendi@cern.ch) |
| 英文摘要 | A measurement of the cross-section for w -> e nu production in pp collisions is presented using data corresponding to an integrated luminosity of 2 fb(-1) collected by the lhcb experiment at a centre-of-mass energy of root s = 8 tev. the electrons are required to have more than 20 gev of transverse momentum and to lie between 2.00 and 4.25 in pseudorapidity. the inclusive w production cross-sections, where the w decays to e nu, are measured to be w-sigma(+)-> e(+)nu(e)= 1124.4 +/- 2.1 +/- 21.5 +/- 11.2 +/- 13.0 pb, w-sigma(-)-> e(-)(nu) over bar (e) = 809.0 +/- 1.9 +/- 18.1 +/- 7.0 +/- 9.4 pb, where the first uncertainties are statistical, the second are systematic, the third are due to the knowledge of the lhc beam energy and the fourth are due to the luminosity determination. differential cross-sections as a function of the electron pseudorapidity are measured. the w+/w- cross-section ratio and production charge asymmetry are also reported. results are compared with theoretical predictions at next-to-next-to-leading order in perturbative quantum chromodynamics. finally, in a precise test of lepton universality, the ratio of w boson branching fractions is determined to be b(w -> e nu)/b(w -> mu nu) = 1.020 +/- 0.002 +/- 0.019, where the first uncertainty is statistical and the second is systematic. |
| WOS关键词 | PARTON DISTRIBUTIONS ; HADRON COLLIDERS ; LHC |
| WOS研究方向 | Physics |
| WOS类目 | Physics, Particles & Fields |
| 语种 | 英语 |
| 出版者 | SPRINGER |
| WOS记录号 | WOS:000386669800001 |
| URI标识 | http://www.irgrid.ac.cn/handle/1471x/2176646 |
| 专题 | 高能物理研究所 |
| 通讯作者 | Aaij, R. |
| 作者单位 | 1.CBPF, Rio De Janeiro, Brazil 2.Univ Fed Rio de Janeiro, Rio De Janeiro, Brazil 3.Tsinghua Univ, Ctr High Energy Phys, Beijing, Peoples R China 4.Univ Savoie Mt Blanc, CNRS IN2P3, LAPP, Annecy Le Vieux, France 5.Univ Clermont Ferrand, Clermont Univ, CNRS IN2P3, LPC, Clermont Ferrand, France 6.Aix Marseille Univ, CPPM, CNRS IN2P3, Marseille, France 7.Univ Paris 11, LAL, CNRS IN2P3, Orsay, France 8.Univ Paris Diderot, Univ Pierre & Marie Curie, LPNHE, CNRS IN2P3, Paris, France 9.Rhein Westfal TH Aachen, Phys Inst 1, Aachen, Germany 10.Tech Univ Dortmund, Fak Phys, Dortmund, Germany |
| 推荐引用方式 GB/T 7714 | Aaij, R.,Adeva, B.,Adinolfi, M.,et al. Measurement of forward w -> e nu production in pp collisions at root s=8 tev[J]. Journal of high energy physics,2016(10):29. |
| APA | Aaij, R..,Adeva, B..,Adinolfi, M..,Ajaltouni, Z..,Akar, S..,...&Zucchelli, S..(2016).Measurement of forward w -> e nu production in pp collisions at root s=8 tev.Journal of high energy physics(10),29. |
| MLA | Aaij, R.,et al."Measurement of forward w -> e nu production in pp collisions at root s=8 tev".Journal of high energy physics .10(2016):29. |
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