期刊
PHYSICS LETTERS B
卷 728, 期 -, 页码 308-313出版社
ELSEVIER
DOI: 10.1016/j.physletb.2013.12.011
关键词
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资金
- Science and Technology Research Council of the United Kingdom
- Merton College, Oxford
- Institute for Particle Physics Phenomenology Associate Scheme
- Science and Technology Facilities Council [ST/K00137X/1, ST/J000442/1] Funding Source: researchfish
- STFC [ST/K00137X/1, ST/J000442/1] Funding Source: UKRI
Higgs boson self-interactions can be investigated via di-Higgs (pp -> hh+ X) production at the LHC. With a small O(30) fb Standard Model production cross section, and a large t (t) over bar background, this measurement has been considered challenging, even at a luminosity-upgraded LHC. We demonstrate that by using simple kinematic bounding variables, of the sort already employed in existing LHC searches, the dominant t (t) over bar background can be largely eliminated. Simulations of the signal and the dominant background demonstrate the prospect for measurement of the di-Higgs production cross section at the 30% level using 3 ab(-1) of integrated luminosity at a high luminosity LHC. This corresponds to a Higgs self-coupling determination with 60% accuracy in the bb iota(+)iota(-) mode, with potential for further improvements from e.g. subjet technologies and from additional di-Higgs decay channels. (C) 2013 The Authors. Published by Elsevier B.V. All rights reserved.
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