arXivDaily arXiv每日学术速递 周一至周五更新
arXiv周末暂无论文更新,休息一下吧,周末愉快~~
arXiv 1102.5429hep-ex
收藏

sqrt(s)= 7 TeV pp碰撞中WW产生的测量和希格斯玻色子的寻找

Measurement of WW Production and Search for the Higgs Boson in pp Collisions at sqrt(s) = 7 TeV

CMS Collaboration

摘要:

本文报道了在sqrt(s)= 7 TeV的pp碰撞中的WW产生的测量和对希格斯玻色子玻色子的寻找。WW候选者是在具有两个轻子(电子或μ子)的事件中选出的。使用CMS探测器记录的LHC数据进行测量,对应于36个倒数皮巴的积分亮度。测得pp到WW的截面为41.1 +/- 15.3(stat)+/- 5.8(syst)+/- 4.5(lumi)pb,与标准模型预测一致。对WW伽马和WWZ异常三规耦合的限制进行了设置。在WW衰变模式中寻找标准模型希格斯玻色子玻色子没有发现任何超出背景的证据。在标准模型的背景下,并在连续的第四族费米子与高质量的存在下,对希格斯玻色子的生产设置了限制。在后一种情况下,在95%的置信水平下排除了质量在144和207 GeV之间的希格斯玻色子玻色子。

英文摘要:

A measurement of WW production in pp collisions at sqrt(s) = 7 TeV and a search for the Higgs boson are reported. The WW candidates are selected in events with two leptons, either electrons or muons. The measurement is performed using LHC data recorded with the CMS detector, corresponding to an integrated luminosity of 36 inverse picobarns. The pp to WW cross section is measured to be 41.1 +/- 15.3 (stat) +/- 5.8 (syst) +/- 4.5 (lumi) pb, consistent with the standard model prediction. Limits on WW gamma and WWZ anomalous triple gauge couplings are set. The search for the standard model Higgs boson in the WW decay mode does not reveal any evidence of excess above backgrounds. Limits are set on the production of the Higgs boson in the context of the standard model and in the presence of a sequential fourth family of fermions with high masses. In the latter context, a Higgs boson with mass between 144 and 207 GeV is ruled out at 95% confidence level.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

↑