abstracts[] |
{'sha1': '7d2ebb7e431d75f28a0e388dfe18f104fa58d709', 'content': 'We reevaluate the two form factors relevant for the ηπ second-class\nτ decay mode, making systematic use of analyticity, unitarity, combined\nwith updated inputs to the NLO chiral constraints. We focus, in particular, on\nthe shape of the ρ resonance peak which is a background-free signature of\na second-class current. Its dispersive construction requires the\nηπ→ππ scattering amplitude which we derive from a family of\nKhuri-Treiman equations solutions constrained with accurate recent results on\nthe η→3π Dalitz plot.', 'mimetype': 'text/plain', 'lang': 'en'}
{'sha1': '68d9e9f28cd2d3ebe8d8808c2e51a933cbe790cf', 'content': 'We reevaluate the two form factors relevant for the $\\eta\\pi$ second-class\n$\\tau$ decay mode, making systematic use of analyticity, unitarity, combined\nwith updated inputs to the NLO chiral constraints. We focus, in particular, on\nthe shape of the $\\rho$ resonance peak which is a background-free signature of\na second-class current. Its dispersive construction requires the\n$\\eta\\pi\\to\\pi\\pi$ scattering amplitude which we derive from a family of\nKhuri-Treiman equations solutions constrained with accurate recent results on\nthe $\\eta\\to3\\pi$ Dalitz plot.', 'mimetype': 'application/x-latex', 'lang': 'en'}
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contribs[] |
{'index': 0, 'creator_id': None, 'creator': None, 'raw_name': 'S. Descotes-Genon', 'given_name': None, 'surname': None, 'role': 'author', 'raw_affiliation': None, 'extra': None}
{'index': 1, 'creator_id': None, 'creator': None, 'raw_name': 'E. Kou', 'given_name': None, 'surname': None, 'role': 'author', 'raw_affiliation': None, 'extra': None}
{'index': 2, 'creator_id': None, 'creator': None, 'raw_name': 'B. Moussallam', 'given_name': None, 'surname': None, 'role': 'author', 'raw_affiliation': None, 'extra': None}
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{'doi': None, 'wikidata_qid': None, 'isbn13': None, 'pmid': None, 'pmcid': None, 'core': None, 'arxiv': '1303.2879v1', 'jstor': None, 'ark': None, 'mag': None, 'doaj': None, 'dblp': None, 'oai': None, 'hdl': None}
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[]
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issue |
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en
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license_slug |
ARXIV-1.0
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refs |
[]
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release_date |
2013-03-12
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release_stage |
submitted
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release_type |
article
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release_year |
2013
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subtitle |
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title |
Dispersive evaluation of the second-class amplitude
τ→ηπν_τ in the standard model
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version |
v1
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[]
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work_id |
wf7x7mgoajeghaait2tovtovqa
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