Measurements of the Top-Quark Mass and the tt̅ Cross Section in the Hadronic τ+jets Decay Channel at √s=1.96 TeV
We present the first direct measurement of the top-quark mass using tt̅ events decaying in the hadronic τ+jets decay channel. Using data corresponding to an integrated luminosity of 2.2 fb[superscript -1] collected by the CDF II detector in pp̅ collisions at √s=1.96 TeV at the Fermilab Tevatron, w...
| Main Authors: | , , |
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| Other Authors: | |
| Format: | Article |
| Language: | en_US |
| Published: |
American Physical Society
2012
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| Online Access: | http://hdl.handle.net/1721.1/75745 https://orcid.org/0000-0002-6047-4211 |
| Summary: | We present the first direct measurement of the top-quark mass using tt̅ events decaying in the hadronic τ+jets decay channel. Using data corresponding to an integrated luminosity of 2.2 fb[superscript -1] collected by the CDF II detector in pp̅ collisions at √s=1.96 TeV at the Fermilab Tevatron, we measure the tt̅ cross section, σ[subscript tt̅] , and the top-quark mass, M[subscript top]. We extract M[subscript top] from a likelihood based on per-event probabilities calculated with leading-order signal and background matrix elements. We measure σ[subscript tt̅] =8.8±3.3(stat)±2.2(syst) pb and M[subscript top]=172.7±9.3(stat)±3.7(syst) GeV/c[superscript 2]. |
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