11,124 research outputs found
Sanity check for bound states in lattice QCD with L\"uscher's finite volume formula -- Exposing Symptoms of Fake Plateaux --
A sanity check rules out certain types of obviously false results, but does
not catch every possible error. After reviewing such a sanity check for
bound states with the L\"uscher's finite volume formula[1-3], we give further
evidences for the operator dependence of plateaux, a symptom of the fake
plateau problem, against the claim in [4]. We then present our critical
comments on [5] by NPLQCD: (i) Operator dependences of plateaux in NPL2013[6,7]
exist with the -values of 4--5%. (ii) The volume independence of plateaux in
NPL2013 does not prove their correctness. (iii) Effective range expansion (ERE)
fits in NPL2013 violate the physical pole condition. (iv) Ref.[5] is partly
based on new data and analysis different from the original ones[6,7]. (v) A new
ERE in Refs.[5,8] does not satisfy the L\"uscher's finite volume formula.
[1] T. Iritani et al., JHEP 10 (2016) 101. [2] S. Aoki et al., PoS
(LATTICE2016) 109. [3] T. Iritani et al., 1703.0720. [4] T. Yamazaki et al.,
PoS (LATTICE2017) 108. [5] S.R. Beane et al., 1705.09239. [6] S.R. Beane et
al., PRD87 (2013) 034506. [7] S.R. Beane et al., PRC88 (2013) 024003. [8] M.L.
Wagman et al., 1706.06550.Comment: 8 pages, 8 figures. Talk presented at 35th International Symposium on
Lattice Field Theory (Lattice 2017), 18-24 June 2017, Granada, Spai
Meson Condensations in High-Density Matter
Recent studies on meson condensations (pions and kaons) in high-density
hadronic matter are reviewed. After summarizing onset mechanisms of pion and
kaon condensations, we discuss implications for neutron star phenomena such as
rapid cooling through neutrino emission, static and dynamic properties of
neutron stars. Recent studies on coexistence problem of pion and kaon
condensations are briefly introduced. Finally, relevance of meson condensations
in hadronic matter to those in color superconductivity are briefly mentioned.Comment: 16 pages, 6 figures, proceedings of Finite Density QCD at Nara, July
10-12, 2003, Nara, Japa
Squark Mass Measurement in the Long-lived Stau Scenario at the LHC
The long-lived stau scenario is an interesting possibility at the LHC. We
study squark mass measurements in this scenario; in particular, we show that
left- and right-handed squark masses are both measurable. In SUSY events,
multiple jets are expected, which become a source of combinatorial backgrounds.
In order to reduce such backgrounds a hemisphere analysis is applied, and we
discuss mass measurements of squarks in decay modes of left-handed squark into
quark + (neutral / charged) Wino and also right-handed squark into quark +
Bino.Comment: 14 pages, 3 figure
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