The Standard Model （SM） Higgs boson was predicted by theorists in the 1960s during the development of the electroweak theory. Prior to the startup of the CERN Large Hadron Collider （LHC）, experimental searches fou...The Standard Model （SM） Higgs boson was predicted by theorists in the 1960s during the development of the electroweak theory. Prior to the startup of the CERN Large Hadron Collider （LHC）, experimental searches found no evidence of the Higgs boson. In July 2012, the ATLAS and CMS experiments at the LHC reported the discovery of a new bosun in their searches for the SM Higgs boson. Subsequent experimental studies have revealed the spin-0 nature of this new boson and found its couplings to SM particles consistent to those of a Higgs boson. These measurements confirmed the newly discovered boson is indeed a Higgs bosun. More measurements will be performed to compare the properties of the Higgs boson with the SM predictions.展开更多
This paper posits that the observed resonance with 28 GeV at the LHC is the pseudoscalar top-bottom quark-antiquark composite which has the calculated mass of 27.9 GeV derived from the periodic table of elementary par...This paper posits that the observed resonance with 28 GeV at the LHC is the pseudoscalar top-bottom quark-antiquark composite which has the calculated mass of 27.9 GeV derived from the periodic table of elementary particles. The calculated mass is for the mass of?. In the periodic table of elementary particles, t quark (13.2 GeV) in the pseudoscalar top-bottom quark-antiquark composite is only a part of full t quark (175.4 GeV), so pseudoscalar?(26.4 GeV) cannot exist independently, and can exist only in the top-bottom quark-antiquark composite. As shown in the observation at the LHC, the resonance with 28 GeV weakens significantly at the higher energy collision (13 TeV), because at the higher collision energy, low-mass pseudoscalar? in the composite likely becomes independent full high-mass vector? moving out of the composite. The periodic table of elementary particles is based on the seven mass dimensional orbitals derived from the seven extra dimensions of 11 spacetime dimensional membrane. The calculated masses of hadrons are in excellent agreement with the observed masses of hadrons by using only five known constants. For examples, the calculated masses of proton, neutron, pion (π±), and pion (±0) are 938.261, 939.425, 139.540, and 134.982 MeV in excellent agreement with the observed 938.272, 939.565, 139.570, and 134.977MeV, respectively with 0.0006%, 0.01%, 0.02%, and 0.004%, respectively for the difference between the calculated and observed mass. The calculated masses of the Higgs bosons as the intermediate vector boson composites are in excellent agreements with the observed masses. In conclusion, the calculated masses of the top-bottom quark-antiquark composite (27.9 GeV), hadrons, and the Higgs bosons by the periodic table of elementary particles are in excellent agreement with the observed masses of resonance with 28 GeV at the LHC, hadrons, and the Higgs bosons, respectively.展开更多
去年在欧洲核子中心大型强子对撞机上的CMS实验和ATLAS实验同时发现了质量为125 Ge V的新粒子,今年,也即2013年,CMS实验研究该粒子的性质,看到该粒子的衰变方式,信号强度,与其他粒子的相互作用强度以及自旋宇称都与理论预言的希格斯粒...去年在欧洲核子中心大型强子对撞机上的CMS实验和ATLAS实验同时发现了质量为125 Ge V的新粒子,今年,也即2013年,CMS实验研究该粒子的性质,看到该粒子的衰变方式,信号强度,与其他粒子的相互作用强度以及自旋宇称都与理论预言的希格斯粒子一致,尽管目前还不能100%的确定,人们基本上相信该粒子就是上述理论家所预言的希格斯粒子。因此,做出预言的理论家获得今年的诺贝尔物理学奖。在希格斯粒子的发现以及性质测量中,我方做出了重要贡献。CMS实验是从双光子和4轻子这两个衰变道找到希格斯粒子的。CMS中国组参加了双光子道的分析。希格斯到双光子的产率很低,而本底的产率则要高12个量级,这好比在一大堆的沙子中找一颗金沙子,非常难。如何有效排除本底是成功的关键,中国组提出了最有效排除本底的办法,被CMS合作组采用。因此,在双光子道,我方解决了一个最关键的问题。在性质测量中,我方同时参加了双光子和4轻子这两个衰变道的分析。CMS利用H→双伽玛衰变道测量Higgs粒子的质量以及产生截面与理论预测之比,结果与标准模型在误差范围内一致。我方的主要贡献在于提供了多变量识别光子的方法,提供了信号与本底的干涉效应对信号强度的修正因子和光子能量的标定。CMS同时利用4轻子道测量Higgs粒子的质量,衰变宽度和自旋宇称,结果与标准模型预言一致。我们的主要贡献是负责了分析方案的设计、施行,代码的编写、调试等,我方在CMS的分析中对统计分析以及统计模型的建立做出了重要贡献。展开更多
基金supported by the Director,Office of Science,Offices of High Energy and Nuclear Physics of the U.S.Department of Energy(Grant No.DE-AC02-05CH11231)
文摘The Standard Model （SM） Higgs boson was predicted by theorists in the 1960s during the development of the electroweak theory. Prior to the startup of the CERN Large Hadron Collider （LHC）, experimental searches found no evidence of the Higgs boson. In July 2012, the ATLAS and CMS experiments at the LHC reported the discovery of a new bosun in their searches for the SM Higgs boson. Subsequent experimental studies have revealed the spin-0 nature of this new boson and found its couplings to SM particles consistent to those of a Higgs boson. These measurements confirmed the newly discovered boson is indeed a Higgs bosun. More measurements will be performed to compare the properties of the Higgs boson with the SM predictions.
文摘This paper posits that the observed resonance with 28 GeV at the LHC is the pseudoscalar top-bottom quark-antiquark composite which has the calculated mass of 27.9 GeV derived from the periodic table of elementary particles. The calculated mass is for the mass of?. In the periodic table of elementary particles, t quark (13.2 GeV) in the pseudoscalar top-bottom quark-antiquark composite is only a part of full t quark (175.4 GeV), so pseudoscalar?(26.4 GeV) cannot exist independently, and can exist only in the top-bottom quark-antiquark composite. As shown in the observation at the LHC, the resonance with 28 GeV weakens significantly at the higher energy collision (13 TeV), because at the higher collision energy, low-mass pseudoscalar? in the composite likely becomes independent full high-mass vector? moving out of the composite. The periodic table of elementary particles is based on the seven mass dimensional orbitals derived from the seven extra dimensions of 11 spacetime dimensional membrane. The calculated masses of hadrons are in excellent agreement with the observed masses of hadrons by using only five known constants. For examples, the calculated masses of proton, neutron, pion (π±), and pion (±0) are 938.261, 939.425, 139.540, and 134.982 MeV in excellent agreement with the observed 938.272, 939.565, 139.570, and 134.977MeV, respectively with 0.0006%, 0.01%, 0.02%, and 0.004%, respectively for the difference between the calculated and observed mass. The calculated masses of the Higgs bosons as the intermediate vector boson composites are in excellent agreements with the observed masses. In conclusion, the calculated masses of the top-bottom quark-antiquark composite (27.9 GeV), hadrons, and the Higgs bosons by the periodic table of elementary particles are in excellent agreement with the observed masses of resonance with 28 GeV at the LHC, hadrons, and the Higgs bosons, respectively.
文摘去年在欧洲核子中心大型强子对撞机上的CMS实验和ATLAS实验同时发现了质量为125 Ge V的新粒子,今年,也即2013年,CMS实验研究该粒子的性质,看到该粒子的衰变方式,信号强度,与其他粒子的相互作用强度以及自旋宇称都与理论预言的希格斯粒子一致,尽管目前还不能100%的确定,人们基本上相信该粒子就是上述理论家所预言的希格斯粒子。因此,做出预言的理论家获得今年的诺贝尔物理学奖。在希格斯粒子的发现以及性质测量中,我方做出了重要贡献。CMS实验是从双光子和4轻子这两个衰变道找到希格斯粒子的。CMS中国组参加了双光子道的分析。希格斯到双光子的产率很低,而本底的产率则要高12个量级,这好比在一大堆的沙子中找一颗金沙子,非常难。如何有效排除本底是成功的关键,中国组提出了最有效排除本底的办法,被CMS合作组采用。因此,在双光子道,我方解决了一个最关键的问题。在性质测量中,我方同时参加了双光子和4轻子这两个衰变道的分析。CMS利用H→双伽玛衰变道测量Higgs粒子的质量以及产生截面与理论预测之比,结果与标准模型在误差范围内一致。我方的主要贡献在于提供了多变量识别光子的方法,提供了信号与本底的干涉效应对信号强度的修正因子和光子能量的标定。CMS同时利用4轻子道测量Higgs粒子的质量,衰变宽度和自旋宇称,结果与标准模型预言一致。我们的主要贡献是负责了分析方案的设计、施行,代码的编写、调试等,我方在CMS的分析中对统计分析以及统计模型的建立做出了重要贡献。
