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000018581 0247_ $$2DOI$$a10.1016/j.physletb.2011.08.022
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000018581 0247_ $$2arXiv$$aarXiv:1105.3366$$chep-lat
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000018581 035__ $$9arXiv$$aarXiv:1105.3366$$chep-lat
000018581 037__ $$aPreJuSER-18581
000018581 041__ $$aeng
000018581 082__ $$a530
000018581 084__ $$2WoS$$aPhysics, Multidisciplinary
000018581 084__ $$2PACS$$a11.55.Bq
000018581 084__ $$2PACS$$a12.38.Gc
000018581 1001_ $$0P:(DE-Juel1)VDB83478$$aGuo, F.-K.$$b0$$uFZJ
000018581 245__ $$aWhen hadrons become unstable:  a novel type of non-analyticity in chiral extrapolations
000018581 260__ $$aAmsterdam$$bNorth-Holland Publ.$$c2011
000018581 300__ $$a510 - 515
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000018581 440_0 $$04934$$aPhysics Letters B$$v703$$x0370-2693$$y4
000018581 500__ $$aWe thank Stephan Durr and Akaki Rusetsky for useful discussions. This work was supported in part by grants provided by the HGF to the virtual institute "Spin and strong QCD" (VH-VI-231), the DFG (SFB/TR 16) and the EU I3HP "Study of Strongly Interacting Matter" under the Seventh Framework Program of the EU, FPA 2008-00592, 2007-29115-E, FIS2008-01323 (Spain) and 227431, HadronPhysics2 (EU). F.J.L.E. thanks the members of the Nuclear Theory Center at Forschungszentrum Julich for their hospitality during this work. U.G.M. also thanks the BMBF for support (Grant No. 06BN9006).
000018581 500__ $$a* Temporary entry *
000018581 500__ $$9arXiv$$a14 pages, 6 figures
000018581 500__ $$a* Temporary entry *
000018581 500__ $$9arXiv$$a14 pages, 6 figures
000018581 520__ $$aHadron masses show a specific dependence on the quark masses. Therefore, the variation of these masses can cause a resonance in a hadronic scattering amplitude to become a bound state. Consequently, the amplitude exhibits a non-analytic behavior at this transition. Crossed amplitudes, where the resonance can be exchanged in the t-channel, can be shown to exhibit the same phenomenon by s --> t analytic continuation. This entails possible kinks in lattice quark-mass extrapolations needed to compute hadronic observables. (C) 2011 Elsevier B.V. All rights reserved.
000018581 536__ $$0G:(DE-Juel1)FUEK413$$2G:(DE-HGF)$$aPhysik der Hadronen und Kerne$$cP53$$x0
000018581 588__ $$aDataset connected to Web of Science
000018581 65320 $$2Author$$aAnalyticity of S-matrix
000018581 65320 $$2Author$$aLattice QCD
000018581 65320 $$2Author$$aChiral extrapolations
000018581 650_7 $$2INSPIRE$$aquark: mass
000018581 650_7 $$2INSPIRE$$ahadron: mass
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000018581 650_7 $$2INSPIRE$$ascattering amplitude
000018581 650_7 $$2INSPIRE$$abound state
000018581 650_7 $$2INSPIRE$$aexpansion: chiral
000018581 650_7 $$2INSPIRE$$akink
000018581 650_7 $$2INSPIRE$$aanalytic properties
000018581 650_7 $$2INSPIRE$$arho(770)
000018581 650_7 $$2INSPIRE$$anumerical calculations
000018581 650_7 $$2INSPIRE$$api: form factor
000018581 650_7 $$2INSPIRE$$aresonance
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000018581 7001_ $$0P:(DE-Juel1)131182$$aHanhart, C.$$b1$$uFZJ
000018581 7001_ $$0P:(DE-HGF)0$$aF. J. Llanes-Estrada, F. J.$$b2
000018581 7001_ $$0P:(DE-Juel1)131252$$aMeißner, U.-G.$$b3$$uFZJ
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000018581 8567_ $$uhttp://dx.doi.org/10.1016/j.physletb.2011.08.022
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