Division of High Energy Physics, Department of Physics, University of Helsinki, FIN-00014, Helsinki, Finland; Helsinki Institute of Physics, FIN-00014, Helsinki, Finland.
Joint Institute for Nuclear Research, RU-141980 Dubna, Russia.
Phys Rev Lett. 2015 Apr 17;114(15):151802. doi: 10.1103/PhysRevLett.114.151802. Epub 2015 Apr 15.
Combined constraints from the CDF and D0 Collaborations on models of the Higgs boson with exotic spin J and parity P are presented and compared with results obtained assuming the standard model value JP=0+. Both collaborations analyzed approximately 10 fb(-) of proton-antiproton collisions with a center-of-mass energy of 1.96 TeV collected at the Fermilab Tevatron. Two models predicting exotic Higgs bosons with JP=0- and JP=2+ are tested. The kinematic properties of exotic Higgs boson production in association with a vector boson differ from those predicted for the standard model Higgs boson. Upper limits at the 95% credibility level on the production rates of the exotic Higgs bosons, expressed as fractions of the standard model Higgs boson production rate, are set at 0.36 for both the JP=0- hypothesis and the JP=2+ hypothesis. If the production rate times the branching ratio to a bottom-antibottom pair is the same as that predicted for the standard model Higgs boson, then the exotic bosons are excluded with significances of 5.0 standard deviations and 4.9 standard deviations for the JP=0- and JP=2+ hypotheses, respectively.
CDF 和 D0 合作实验对具有奇异自旋 J 和宇称 P 的希格斯玻色子模型的联合限制进行了研究，并与假设标准模型 JP=0+ 值得到的结果进行了比较。两个合作实验都分析了费米实验室 Tevatron 收集的大约 10 fb(-1)的质心能量为 1.96 TeV 的质子-反质子碰撞数据。测试了两个预测具有 JP=0-和 JP=2+奇异希格斯玻色子的模型。与矢量玻色子相关联的奇异希格斯玻色子产生的运动学性质与标准模型希格斯玻色子的预测不同。对奇异希格斯玻色子产生的速率设定了 95%置信水平的上限，以标准模型希格斯玻色子产生速率的分数表示，对于 JP=0-假设和 JP=2+假设，上限值分别为 0.36。如果产生率乘以到底夸克对的分支比与标准模型希格斯玻色子的预测相同，则奇异玻色子被排除，对于 JP=0-和 JP=2+假设，排除的置信度分别为 5.0 个标准差和 4.9 个标准差。
