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篇目详细内容 |
【篇名】 |
Higgs boson searches at the Tevatron |
【刊名】 |
Frontiers of Physics |
【刊名缩写】 |
Front. Phys |
【ISSN】 |
2095-0462 |
【EISSN】 |
2095-0470 |
【DOI】 |
10.1007/s11467-013-0293-0 |
【出版社】 |
Higher Education Press and Springer-Verlag Berlin
Heidelberg |
【出版年】 |
2013 |
【卷期】 |
8
卷3期 |
【页码】 |
270-284
页,共
15
页 |
【作者】 |
Gavin J.;
Davies,;
on behalf of the
CDF and D0 Collaborations;
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【关键词】 |
Higgs; Tevatron |
【摘要】 |
This article reviews the Higgs searches at the Tevatron, as presented over the summer of 2012; both standard model (SM) and beyond the standard model (BSM) results are discussed as detailed (arXiv: 1207.0449; Phys. Rev. Lett., 2012, 109: 071804; Phys. Rev. D, 2012, 85: 032005).We discuss the combination of searches by the CDF and D0 Collaborations for the standard model Higgs boson in the mass range 100―200 GeV/c2 produced in the the gg→H, WH, ZH, , and vector boson fusion production modes, and decaying in the , H→W + W-, H→ZZ, H→τ+τ-, and H→γγ modes. The data, collected at the Fermilab Tevatron collider in collisions at = 1.96 TeV, correspond to integrated luminosities of up to 10 fb-1. In the absence of signal, we expect to exclude the regions 100<mH<120?GeV/c2 and 139<mH<184?GeV/c2. We exclude, at the 95% C.L., two regions: 100<mH<103?GeV/c2, and 147<mH<180?GeV/c2. We observe a signi.cant excess of events in the mass range between 115 and 140 GeV/c2. The local signi.cance corresponds to 3.0 standard deviations at mH =120?GeV/c2; the global signi.cance (incorporating the lookelsewhere e.ect) for such an excess anywhere in the full mass range investigated is approximately 2.5 standard deviations. Furthermore, we separately combine searches for , H→W + W-and H→γγ. We find that the excess is concentrated in the H→bbˉ channel, appearing in the searches over a broad range of mH; the maximum local significance of 3.3 standard deviations corresponds to a global significance of approximately 3.1 standard deviations. The observed signal strengths in all channels are consistent with the expectation for a standard model Higgs boson at mH = 125?GeV/c2. The production of neutral Higgs bosons in association with b-quarks can be significantly enhanced in various beyond the standard model scenarios, including Supersymmetry. The recent combination of such searches from the two collaborations is discussed. |
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