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HFLAV-Tau Winter 2022 Report


References

[1]
M. ‍Davier, A. ‍Hocker, and Z. ‍Zhang, “The Physics of hadronic tau decays,” Rev. Mod. Phys. 78 (2006) 1043, arXiv:hep-ph/0507078 [hep-ph].
[2]
Heavy Flavor Averaging Group, Y. ‍Amhis et ‍al., “Averages of b-hadron, c-hadron, and τ-lepton properties as of early 2012,” arXiv:1207.1158 [hep-ex].
[3]
Heavy Flavor Averaging Group, Y. ‍Amhis et ‍al., “Averages of b-hadron, c-hadron, and τ-lepton properties as of summer 2014,” arXiv:1412.7515 [hep-ex].
[4]
Heavy Flavor Averaging Group, Y. ‍Amhis et ‍al., “Averages of b-hadron, c-hadron, and τ-lepton properties as of summer 2016,” Eur. Phys. J. C77 (2017) 895, arXiv:1612.07233 [hep-ex].
[5]
HFLAV collaboration, Y. ‍S. Amhis et ‍al., “Averages of b-hadron, c-hadron, and τ -lepton properties as of 2018,” Eur. Phys. J. C81 (2021) 226, arXiv:1909.12524 [hep-ex].
[6]
ALEPH collaboration, S. ‍Schael et ‍al., “Branching ratios and spectral functions of tau decays: Final ALEPH measurements and physics implications,” Phys. Rept. 421 (2005) 191, arXiv:hep-ex/0506072 [hep-ex]. HFLAV-tau uses measurements of τ → h X and τ → K X and obtains τ → π X by difference; the measurement of B( τ → 3h 2h+ π0 ντ (ex. K0)) has been read as (2.1 ± 0.7 ± 0.6) × 10−4 whereas PDG11 uses (2.1 ± 0.7 ± 0.9) × 10−4.
[7]
Particle Data Group collaboration, P. ‍A. Zyla et ‍al., “Review of Particle Physics,” PTEP 2020 no. ‍8, (2020) 083C01.
[8]
A. ‍Lusiani, “Measurement of the branching fractions of the decays τK nπ0 ντ (n = 0,1,2,3) and τ → π nπ0 ντ (n = 3,4) by BaBar,” EPJ Web Conf. 212 (2019) 08001, arXiv:1906.02626 [hep-ex].
[9]
BaBar collaboration, B. ‍Aubert et ‍al., “Measurement of the τK π0 ντ branching fraction,” Phys. Rev. D76 (2007) 051104, arXiv:0707.2922 [hep-ex].
[10]
M. ‍A. Arroyo-Ureña, G. ‍Hernández-Tomé, G. ‍López-Castro, P. ‍Roig, and I. ‍Rosell, “Radiative corrections to τ→π(K)ντ[γ]: A reliable new physics test,” Phys. Rev. D 104 no. ‍9, (2021) L091502, arXiv:2107.04603 [hep-ph].
[11]
W. ‍J. Marciano and A. ‍Sirlin, “Radiative corrections to πℓ 2 decays,” Phys. Rev. Lett. 71 (1993) 3629.
[12]
R. ‍Decker and M. ‍Finkemeier, “Radiative corrections to the decay τ → π (K) ντ,” Phys. Lett. B334 (1994) 199.
[13]
R. ‍Decker and M. ‍Finkemeier, “Short and long distance effects in the decay τ → π ντ(γ),” Nucl. Phys. B438 (1995) 17, arXiv:hep-ph/9403385.
[14]
R. ‍Decker and M. ‍Finkemeier, “Radiative corrections to the decay τ → π ντ,” Nucl. Phys. Proc. Suppl. 40 (1995) 453, arXiv:hep-ph/9411316 [hep-ph].
[15]
DELPHI collaboration, P. ‍Abreu et ‍al., “Measurements of the leptonic branching fractions of the tau,” Eur. Phys. J. C10 (1999) 201.
[16]
L3 collaboration, M. ‍Acciarri et ‍al., “Measurement of the τ branching fractions into leptons,” Phys. Lett. B507 (2001) 47, arXiv:hep-ex/0102023 [hep-ex].
[17]
OPAL collaboration, G. ‍Abbiendi et ‍al., “A Measurement of the tau- –> mu- anti-nu(mu) nu(tau) branching ratios,” Phys. Lett. B551 (2003) 35, arXiv:hep-ex/0211066 [hep-ex].
[18]
ARGUS collaboration, H. ‍Albrecht et ‍al., “Measurement of exclusive one prong and inclusive three prong branching ratios of the tau lepton,” Z. Phys. C53 (1992) 367.
[19]
BaBar collaboration, B. ‍Aubert et ‍al., “Measurements of Charged Current Lepton Universality and |V(us)| using Tau Lepton Decays to e- nu(e)-bar nu(tau), mu-bar nu(mu)-bar nu(tau), pi- nu(tau) and K- nu(tau),” Phys. Rev. Lett. 105 (2010) 051602, arXiv:0912.0242 [hep-ex].
[20]
CLEO collaboration, A. ‍Anastassov et ‍al., “Experimental test of lepton universality in tau decay,” Phys. Rev. D55 (1997) 2559. Erratum ibid. D58, 119903, (1998).
[21]
OPAL collaboration, G. ‍Abbiendi et ‍al., “A Measurement of the tau- –> e- anti-neutrino(e) neutrino(tau) branching ratio,” Phys. Lett. B447 (1999) 134, arXiv:hep-ex/9812017 [hep-ex].
[22]
DELPHI collaboration, P. ‍Abreu et ‍al., “A Study of the decays of tau leptons produced on the Z resonance at LEP,” Z. Phys. C55 (1992) 555.
[23]
L3 collaboration, M. ‍Acciarri et ‍al., “Measurement of exclusive branching fractions of hadronic one space prong tau decays,” Phys. Lett. B345 (1995) 93.
[24]
OPAL collaboration, G. ‍Alexander et ‍al., “Measurement of branching ratios and tau polarization from τ → e ν ν , τ → µ ν ν, and τ π (K) ν decays at LEP,” Phys. Lett. B266 (1991) 201.
[25]
DELPHI collaboration, J. ‍Abdallah et ‍al., “A Measurement of the tau hadronic branching ratios,” Eur. Phys. J. C46 (2006) 1, arXiv:hep-ex/0603044 [hep-ex].
[26]
OPAL collaboration, K. ‍Ackerstaff et ‍al., “Measurement of the one prong hadronic tau branching ratios at LEP,” Eur. Phys. J. C4 (1998) 193, arXiv:hep-ex/9801029 [hep-ex].
[27]
ALEPH collaboration, R. ‍Barate et ‍al., “One prong tau decays with kaons,” Eur. Phys. J. C10 (1999) 1, arXiv:hep-ex/9903014 [hep-ex].
[28]
CLEO collaboration, M. ‍Battle et ‍al., “Measurement of Cabibbo suppressed decays of the tau lepton,” Phys. Rev. Lett. 73 (1994) 1079, arXiv:hep-ph/9403329 [hep-ph].
[29]
DELPHI collaboration, P. ‍Abreu et ‍al., “Charged kaon production in tau decays at LEP,” Phys. Lett. B334 (1994) 435.
[30]
OPAL collaboration, G. ‍Abbiendi et ‍al., “A Study of one prong tau decays with a charged kaon,” Eur. Phys. J. C19 (2001) 653, arXiv:hep-ex/0009017 [hep-ex].
[31]
Belle collaboration, M. ‍Fujikawa et ‍al., “High-Statistics Study of the τ → π π0 ντ Decay,” Phys. Rev. D78 (2008) 072006, arXiv:0805.3773 [hep-ex].
[32]
CLEO collaboration, M. ‍Artuso et ‍al., “A Measurement of the branching fraction Bh π0 ντ),” Phys. Rev. Lett. 72 (1994) 3762, arXiv:hep-ph/9404310 [hep-ph].
[33]
OPAL collaboration, G. ‍Abbiendi et ‍al., “Measurement of the strange spectral function in hadronic tau decays,” Eur. Phys. J. C35 (2004) 437, arXiv:hep-ex/0406007 [hep-ex].
[34]
CLEO collaboration, M. ‍Procario et ‍al., “Tau decays with one charged particle plus multiple π0s,” Phys. Rev. Lett. 70 (1993) 1207.
[35]
ALEPH collaboration, R. ‍Barate et ‍al., “K0(S) production in tau decays,” Eur. Phys. J. C4 (1998) 29. http://cdsweb.cern.ch/record/346304.
[36]
OPAL collaboration, R. ‍Akers et ‍al., “Measurements of the inclusive branching ratios of tau leptons to K0(s) and charged K* (892),” Phys. Lett. B339 (1994) 278.
[37]
CLEO collaboration, T. ‍Coan et ‍al., “Decays of tau leptons to final states containing KS0 mesons,” Phys. Rev. D53 (1996) 6037.
[38]
Belle collaboration, S. ‍Ryu et ‍al., “Measurements of Branching Fractions of τ Lepton Decays with one or more KS0,” Phys. Rev. D89 (2014) 072009, arXiv:1402.5213 [hep-ex].
[39]
L3 collaboration, M. ‍Acciarri et ‍al., “One prong tau decays with neutral kaons,” Phys. Lett. B352 (1995) 487.
[40]
OPAL collaboration, G. ‍Abbiendi et ‍al., “Tau decays with neutral kaons,” Eur. Phys. J. C13 (2000) 213, arXiv:hep-ex/9911029 [hep-ex].
[41]
BaBar collaboration, J. ‍P. Lees et ‍al., “Measurement of the spectral function for the τKKSντ decay,” Phys. Rev. D98 (2018) 032010, arXiv:1806.10280 [hep-ex].
[42]
ALEPH collaboration, R. ‍Barate et ‍al., “Study of tau decays involving kaons, spectral functions and determination of the strange quark mass,” Eur. Phys. J. C11 (1999) 599, arXiv:hep-ex/9903015 [hep-ex].
[43]
BaBar collaboration, J. ‍P. Lees et ‍al., “The branching fraction of τ → π KS0 KS00) ντ decays,” Phys. Rev. D86 (2012) 092013, arXiv:1208.0376 [hep-ex].
[44]
CELLO collaboration, H. ‍Behrend et ‍al., “Tau production and decay with the CELLO detector at PETRA,” Phys. Lett. B222 (1989) 163.
[45]
L3 collaboration, B. ‍Adeva et ‍al., “Decay properties of tau leptons measured at the Z0 resonance,” Phys. Lett. B265 (1991) 451.
[46]
TPC/Two Gamma collaboration, H. ‍Aihara et ‍al., “Measurement of τ branching ratios,” Phys. Rev. D35 (1987) 1553.
[47]
L3 collaboration, P. ‍Achard et ‍al., “Measurement of the topological branching fractions of the τ lepton at LEP,” Phys. Lett. B519 (2001) 189, arXiv:hep-ex/0107055 [hep-ex].
[48]
OPAL collaboration, R. ‍Akers et ‍al., “Measurement of the τh h+ h ντ and τh h+ h >= 1 π0 ντ branching ratios,” Z. Phys. C68 (1995) 555.
[49]
CLEO collaboration, R. ‍Balest et ‍al., “Measurements of the decays τh h+ h ντ and τh h+ h π0 ντ,” Phys. Rev. Lett. 75 (1995) 3809.
[50]
BaBar collaboration, B. ‍Aubert et ‍al., “Exclusive branching fraction measurements of semileptonic tau decays into three charged hadrons, τ → φ π ντ and τ → φ K ντ,” Phys. Rev. Lett. 100 (2008) 011801, arXiv:0707.2981 [hep-ex].
[51]
Belle collaboration, M. ‍Lee et ‍al., “Measurement of the branching fractions and the invariant mass distributions for τhh+hντ decays,” Phys. Rev. D81 (2010) 113007, arXiv:1001.0083 [hep-ex].
[52]
CLEO collaboration, R. ‍A. Briere et ‍al., “Branching fractions of tau leptons decays to three charged hadrons,” Phys. Rev. Lett. 90 (2003) 181802, arXiv:hep-ex/0302028 [hep-ex].
[53]
CLEO collaboration, K. ‍Edwards et ‍al., “Resonant structure of τ → 3 π π0 ντ and τ → ω π ντ decays,” Phys. Rev. D61 (2000) 072003, arXiv:hep-ex/9908024 [hep-ex].
[54]
CLEO collaboration, D. ‍Bortoletto et ‍al., “Measurement of the decay τ → π π+ π 2 π0 ντ,” Phys. Rev. Lett. 71 (1993) 1791.
[55]
CLEO collaboration, A. ‍Anastassov et ‍al., “Study of tau decays to six pions and neutrino,” Phys. Rev. Lett. 86 (2001) 4467, arXiv:hep-ex/0010025 [hep-ex].
[56]
CLEO collaboration, S. ‍Richichi et ‍al., “Study of three prong hadronic tau decays with charged kaons,” Phys. Rev. D60 (1999) 112002, arXiv:hep-ex/9810026 [hep-ex].
[57]
TPC/Two Gamma collaboration, D. ‍A. Bauer et ‍al., “Measurement of the kaon content of three prong tau decays,” Phys. Rev. D50 (1994) 13.
[58]
ALEPH collaboration, R. ‍Barate et ‍al., “Three prong tau decays with charged kaons,” Eur. Phys. J. C1 (1998) 65.
[59]
CLEO collaboration, K. ‍E. Arms et ‍al., “Study of tau decays to four-hadron final states with kaons,” Phys. Rev. Lett. 94 (2005) 241802, arXiv:hep-ex/0501042 [hep-ex].
[60]
OPAL collaboration, G. ‍Abbiendi et ‍al., “A Study of three prong tau decays with charged kaons,” Eur. Phys. J. C13 (2000) 197, arXiv:hep-ex/9908013 [hep-ex].
[61]
CLEO collaboration, D. ‍Gibaut et ‍al., “Study of the five charged pion decay of the tau lepton,” Phys. Rev. Lett. 73 (1994) 934.
[62]
B. ‍Bylsma et ‍al., “Limit on tau decay to seven charged particles,” Phys. Rev. D35 (1987) 2269.
[63]
ARGUS collaboration, H. ‍Albrecht et ‍al., “An Improved Upper Limit on the tau-neutrino Mass from the Decay τ → π π π π+ π+ ντ,” Phys. Lett. B202 (1988) 149.
[64]
OPAL collaboration, K. ‍Ackerstaff et ‍al., “Measurement of tau branching ratios to five charged hadrons,” Eur. Phys. J. C8 (1999) 183, arXiv:hep-ex/9808011 [hep-ex].
[65]
ALEPH collaboration, D. ‍Buskulic et ‍al., “A Study of tau decays involving eta and omega mesons,” Z. Phys. C74 (1997) 263.
[66]
Belle collaboration, K. ‍Inami et ‍al., “Precise measurement of hadronic tau-decays with an eta meson,” Phys. Lett. B672 (2009) 209, arXiv:0811.0088 [hep-ex].
[67]
CLEO collaboration, M. ‍Artuso et ‍al., “Measurement of tau decays involving eta mesons,” Phys. Rev. Lett. 69 (1992) 3278.
[68]
BaBar collaboration, P. ‍del Amo ‍Sanchez et ‍al., “Studies of tau- –> eta K-nu and tau- –> eta pi- nu(tau) at BaBar and a search for a second-class current,” Phys. Rev. D83 (2011) 032002, arXiv:1011.3917 [hep-ex].
[69]
CLEO collaboration, J. ‍E. Bartelt et ‍al., “First observation of the decay tau- –> K- eta tau-neutrino,” Phys. Rev. Lett. 76 (1996) 4119.
[70]
CLEO collaboration, M. ‍Bishai et ‍al., “First observation of the decay τK*− η ντ,” Phys. Rev. Lett. 82 (1999) 281, arXiv:hep-ex/9809012 [hep-ex].
[71]
CLEO collaboration, P. ‍S. Baringer et ‍al., “Production of eta and omega mesons in tau decay and a search for second class currents,” Phys. Rev. Lett. 59 (1987) 1993.
[72]
ALEPH collaboration, D. ‍Buskulic et ‍al., “Tau hadronic branching ratios,” Z. Phys. C70 (1996) 579.
[73]
BaBar collaboration, J. ‍P. Lees et ‍al., “Study of high-multiplicity 3-prong and 5-prong tau decays at BaBar,” Phys. Rev. D86 (2012) 092010, arXiv:1209.2734 [hep-ex].
[74]
Belle collaboration, K. ‍Belous et ‍al., “Measurement of the τ-lepton lifetime at Belle,” Phys. Rev. Lett. 112 (2014) 031801, arXiv:1310.8503 [hep-ex].
[75]
W. ‍Marciano and A. ‍Sirlin, “Electroweak Radiative Corrections to tau Decay,” Phys. Rev. Lett. 61 (1988) 1815.
[76]
A. ‍Pich, “Precision Tau Physics,” Prog. Part. Nucl. Phys. 75 (2014) 41, arXiv:1310.7922 [hep-ph].
[77]
A. ‍Ferroglia, C. ‍Greub, A. ‍Sirlin, and Z. ‍Zhang, “Contributions of the W-boson propagator to µ and τ leptonic decay rates,” Phys. Rev. D88 (2013) 033012, arXiv:1307.6900 [hep-ph].
[78]
M. ‍Fael, L. ‍Mercolli, and M. ‍Passera, “W-propagator corrections to µ and τ leptonic decays,” Phys. Rev. D88 (2013) 093011, arXiv:1310.1081 [hep-ph].
[79]
FlaviaNet working group on kaon decays, M. ‍Antonelli et ‍al., “An Evaluation of |Vus| and precise tests of the Standard Model from world data on leptonic and semileptonic kaon decays,” Eur. Phys. J. C69 (2010) 399, arXiv:1005.2323 [hep-ph].
[80]
E. ‍Gamiz, M. ‍Jamin, A. ‍Pich, J. ‍Prades, and F. ‍Schwab, “Determination of ms and |Vus| from hadronic tau decays,” JHEP 01 (2003) 060, arXiv:hep-ph/0212230 [hep-ph].
[81]
E. ‍Gamiz, M. ‍Jamin, A. ‍Pich, J. ‍Prades, and F. ‍Schwab, “Vus and ms from hadronic tau decays,” Phys. Rev. Lett. 94 (2005) 011803, arXiv:hep-ph/0408044 [hep-ph].
[82]
E. ‍Gamiz, M. ‍Jamin, A. ‍Pich, J. ‍Prades, and F. ‍Schwab, “|Vus| and ms from hadronic tau decays,” Nucl. Phys. Proc. Suppl. 169 (2007) 85, arXiv:hep-ph/0612154.
[83]
E. ‍Gamiz, M. ‍Jamin, A. ‍Pich, J. ‍Prades, and F. ‍Schwab, “Theoretical progress on the Vus determination from tau decays,” PoS KAON (2008) 008, arXiv:0709.0282 [hep-ph].
[84]
K. ‍Maltman, “A Critical look at Vus determinations from hadronic τ decay data,” Nucl. Phys. Proc. Suppl. 218 (2011) 146, arXiv:1011.6391 [hep-ph].
[85]
R. ‍J. Hudspith, R. ‍Lewis, K. ‍Maltman, and J. ‍Zanotti, “A resolution of the inclusive flavor-breaking τ |Vus| puzzle,” Phys. Lett. B781 (2018) 206–212, arXiv:1702.01767 [hep-ph].
[86]
RBC, UKQCD collaboration, P. ‍Boyle, R. ‍J. Hudspith, T. ‍Izubuchi, A. ‍Jüttner, C. ‍Lehner, R. ‍Lewis, K. ‍Maltman, H. ‍Ohki, A. ‍Portelli, and M. ‍Spraggs, “Novel |Vus| Determination Using Inclusive Strange τ Decay and Lattice Hadronic Vacuum Polarization Functions,” Phys. Rev. Lett. 121 (2018) 202003, arXiv:1803.07228 [hep-lat].
[87]
Heavy Flavor Averaging Group, D. ‍Asner et ‍al., “Averages of b-hadron, c-hadron, and τ-lepton properties,” arXiv:1010.1589 [hep-ex].
[88]
J. ‍C. Hardy and I. ‍S. Towner, “Superallowed 0+ → 0+ nuclear β decays: 2020 critical survey, with implications for Vud and CKM unitarity,” Phys. Rev. C 102 no. ‍4, (2020) 045501.
[89]
BaBar collaboration, S. ‍Banerjee, “Lepton Universality, |Vus| and search for second class current in tau decays,” in 34th International Conference on High Energy Physics. 11, 2008. arXiv:0811.1429 [hep-ex].
[90]
FLAG collaboration, S. ‍Aoki et ‍al., “FLAG Review 2019,” arXiv:1902.08191 [hep-lat].
[91]
N. ‍Miller et ‍al., “FK / Fπ from Möbius Domain-Wall fermions solved on gradient-flowed HISQ ensembles,” Phys. Rev. D 102 no. ‍3, (2020) 034507, arXiv:2005.04795 [hep-lat].
[92]
R. ‍J. Dowdall, C. ‍T. ‍H. Davies, G. ‍P. Lepage, and C. ‍McNeile, “Vus from π and K decay constants in full lattice QCD with physical u, d, s and c quarks,” Phys. Rev. D88 (2013) 074504, arXiv:1303.1670 [hep-lat].
[93]
A. ‍Bazavov et ‍al., “B- and D-meson leptonic decay constants from four-flavor lattice QCD,” Phys. Rev. D98 (2018) 074512, arXiv:1712.09262 [hep-lat].
[94]
Fermilab Lattice, MILC collaboration, A. ‍Bazavov et ‍al., “Charmed and light pseudoscalar meson decay constants from four-flavor lattice QCD with physical light quarks,” Phys. Rev. D90 (2014) 074509, arXiv:1407.3772 [hep-lat].
[95]
J. ‍Erler, “Electroweak radiative corrections to semileptonic tau decays,” Rev. Mex. Fis. 50 (2004) 200, arXiv:hep-ph/0211345.
[96]
E. ‍Tiesinga, P. ‍J. Mohr, D. ‍B. Newell, and B. ‍N. Taylor, “CODATA recommended values of the fundamental physical constants: 2018,” Rev. Mod. Phys. 93 no. ‍2, (2021) 025010. Database developed by J. Baker, M. Douma, and S. Kotochigova. Available at http://physics.nist.gov/constants, National Institute of Standards and Technology, Gaithersburg, MD 20899.
[97]
C.-Y. Seng, D. ‍Galviz, W. ‍J. Marciano, and U.-G. Meißner, “Update on |Vus| and |Vus/Vud| from semileptonic kaon and pion decays,” Phys. Rev. D 105 no. ‍1, (2022) 013005, arXiv:2107.14708 [hep-ph].
[98]
M. ‍Jamin, A. ‍Pich, and J. ‍Portoles, “What can be learned from the Belle spectrum for the decay τ → ντKS π,” Phys. Lett. B664 (2008) 78, arXiv:0803.1786 [hep-ph].
[99]
M. ‍Antonelli, V. ‍Cirigliano, A. ‍Lusiani, and E. ‍Passemar, “Predicting the τ strange branching ratios and implications for Vus,” JHEP 10 (2013) 070, arXiv:1304.8134 [hep-ph].

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HFLAV-Tau Winter 2022 Report