[KTeV HOME] Results [Publications] [Theses] [Talks]

List of published / announced KTeV Analysis Topics

from E799-II (rare decays) and E832 (epsilon'/epsilon)

E799-II

• K_L->pi0ee (updated July 21, 2004)
• K_L->pi0 mu mu (updated Jun. 3, 2000)
• K_L->pi0nu nu-bar (updated Apr. 5,1999)
• K_L->pi+pi-e+e- (updated March 18, 2006)
• K_L->pi0 pi0 e+e- (updated on Nov. 28, 2001)
• K_L->pi0pi0mu+mu- (updated on June 9, 2009)
• K_L->pi0 pi0 gamma (updated on September 18, 2008)
• K_L->e+e-e+e- (updated June 20, 2003)
• K_L->e+e-mu+mu- (updated April 9, 2003)
• K_L-> e+e- gamma (updated August 9, 2007)
• K_L->e+e- gamma gamma (updated July 3, 2001)
• K_L->mu+ mu- gamma (updated August 24, 2001)
• K_L->mu+ mu- gamma gamma (updated Oct. 31, 2000)
• Ke3
• K_L->pi+e-nu e+e- (updated August 29, 2007)
• K_L->pi0e+e-gamma (updated April 28, 2008)
• K_L->pi⁺pi^-pi⁰gamma (updated June 25, 2005)
• K_L->pi⁺pi^-pi⁰e⁺e^- (updated June 25, 2005)
• K_L->pi0 mu e (updated Apr. 19, 2008)
• K_L->pi0 pi0 mu e (updated Apr. 19, 2008)
• pi0->ee (updated January 22, 2007)
• pi0->e+e-gamma (updated November 3, 2006)
• pi0->e+e-e+e- (updated May 8,2008)
• pi0->mu e (updated Apr. 19, 2008)
• Cascade beta decay (updated April 19, 2001)
• Cascade0 form factors (updated Sep. 28, 2001)
• Cascade muonic beta decay (updated January 26, 2006)
• Cascade0->Sigma0 gamma (updated February 16, 2001)
• Cascade0->Lambda gamma
• Cascade0->Lambda pi0
• Cascade0 and Anti-Cascade0 polarizations (updated Feb. 7, 2007)
• H dibaryon (updated Mar. 13, 2000)

[Top]

E832

• epsilon'/epsilon (updated Oct. 4, 2011)
• delta m, tau_S, Phi_+-, delta Phi (CPT test) (updated Oct. 4, 2011)
• K_L-> pi e nu Charge asymmetry (updated May 12, 2004)
• K_L->pi+ pi- gamma (updated August 28, 2006)
• K_L->pi0 gamma gamma (updated August 18, 2008)
• Ke3 radiative decay (updated Nov. 13, 2001)
• K_L->pi⁰pi⁰pi⁰ Dalitz Plot (updated August 18, 2008)
• K_L->pi+ pi- pi0 gamma (updated Jan. 18, 2002)
• |V_us| (updated Nov. 10, 2004)
• K_L Branching Fractions (updated Dec. 11, 2004)
• Kl3 Form Factors (updated Nov. 8, 2010)
• Kl3 radiative decays (updated Jan. 14, 2005)
• K* (updated Jul. 27, 2002)
• R0: Light Gluino(updated Sep. 16, 1999)

KTeV E799-II results

[Top] [E832]

K_L ->pi⁰ e⁺ e^-

• [Plots]
• BR < 3.5 x 10^-10 (90%CL),
  based on 1 event observed (expected background is 0.99 +- 0.35 events) in 1999 data.
  Combining with the previous result based on 1997 data, the combined limit is
  BR < 2.8 x 10^-10 (90%CL) .
  Published in Phys. Rev. Lett. 93, 021805 (2004).
  [Plots]
  Detailed description of the analysis is available in Nancy Jin-Jin Lai's PhD thesis.
• Full description of one of the 1997 data analyses is available in PhD thesis by Peter Mikelson.
• [Old published results]

K_L ->pi⁰ mu⁺ mu^-

• [Plots]
• BR < 3.8 x 10^-10 (90% CL), based on 2 observed events with an expected background of 0.87 +- 0.15 background events.
  Published in Phys. Rev. Lett. 84, 5279-5282 (2000).
  PRL abstract, [Plots]
  
• Original analysis of this result is available in PhD thesis by Masayoshi Sadamoto.

K_L ->pi⁰ nu nu-bar

• [Plots]
• BR <5.9 x 10^-7 (90% CL), using pi⁰->e⁺ e^- gamma.
  Published in Phys. Rev. D 61, 072006 (2000).
  PRD abstract, [Plots]
  Full description is available in PhD thesis by Kazunori Hanagaki.
  
• [OLD Published Result]

K_L ->pi⁺ pi^- e⁺ e^-

• [Plots]
• BR = (3.63 +- 0.11 +- 0.14) x 10^-7 (preliminary) based on 1507.8+-46.0 events after background subtraction in full data sample. This new result uses new gM1=1.35, instead of 0.76 which have been being used for previous measurements.
  Presented by Katsumi Senyo at EPS HEP99 on July 14, 1999.
  Full description is available in PhD thesis by Katsumi Senyo.
• BR = (3.2 +- 0.6 +- 0.4) x 10^-7 based on 46 candidates in 1 day data.
  Published in Phys. Rev. Lett. 80, 4123 (1998).
  PRL abstract, [Plots].
  
• Asymmetry = 13.6 +- 1.4 +- 1.5 %
  g_CR (coupling of the CP conserving charge radius process) = 0.163 +- 0.014 +- 0.023
  <r²_K0> (K⁰ charge radius) = (-0.077 +- 0.007 +- 0.011 ) fm²
  |g_E1|/|g_M1| < 0.04 (90% CL)
  |g~_M1| = 1.11 +- 0.12 +- 0.08
  a₁/a₂ = (-0.744 +- 0.027 +- 0.032) GeV²/c²
  Published in Phys. Rev. Lett. 96, 101801 (2006).
  PRL abstract, hep-ex/0508010 [Plots]
  Full description is available in PhD thesis by Alexander Golossanov.

K_L->pi⁰pi⁰e⁺e^-

• [Plots]
• BR < 6.6 x 10^-9 (90% CL), based on 1 observed event where 0.3 background events are expected.
  Published in Phys. Rev. Lett. 89, 211801 (2002).
  PRL abstract, [Plots]

K_L->pi⁰pi⁰mu⁺mu^-

• BR(K_L->pi⁰pi⁰mu⁺mu^-) < 9.2 x 10^-11 (90% CL)
  BR(K_L->pi⁰pi⁰X⁰ -> pi⁰pi⁰mu⁺mu^-) < 1.0 x 10^-10 (90% CL)
  based on 0 observed events.
  Published in Phys. Rev. Lett. 107, 201803 (2011).
  [Plots]
  Detailed description is available in PhD thesis by David Phillips.

K_L->pi⁰pi⁰gamma

• BR < 2.32 x 10^-7 (90% CL)
  
  based on 1 observed event in 1997+1999 data.
  Published in Phys. Rev. D 78, 032014 (2008).
  [Plots]

K_L ->e⁺ e^- e⁺ e^-

• [Plots]
• BR = (4.16 +- 0.13 +- 0.13 +- 0.17 (ext syst)) x 10^-8 (preliminary) based on 1056 events in 1997 and 1999 data.
  Form factor, alpha_K* = -0.03 +- 0.13 +- 0.04 (preliminary).
  Presented by Tony Barker at Fermilab Wine and Cheese, June 20, 2003.
  Detailed description is available in Jason LaDue's PhD thesis.
• BR = (3.72 +- 0.18 +- 0.23) x 10^-8,
  beta_CP = -0.23 +- 0.09 +- 0.02,
  gamma_CP = -0.09 +- 0.09 +- 0.02,
  alpha_K*^eff(BMS) = -0.14 +- 0.16 +- 0.15,
  alpha_DIP^eff = -1.1 +- 0.6 (stat),
  based on 441 candidate events with a background of 4.2 events, where the distribution of the angle between ee and ee planes, phi, was fit to dGamma / dphi \propto 1 + beta_CP cos(2 phi) + gamma_CP sin(2 phi).
  Published in Phys. Rev. Lett. 86, 5425-5429 (2001).
  PRL abstract, [Plots]
  A full description is available in PhD thesis by Eva Halkiadakis.

K_L ->e⁺ e^- mu⁺ mu^-

• [Plots]
• BR=(2.69 +- 0.24 +- 0.12) x 10^-9 ((M_eemm/M_K)² > 0.95 ) ,
  based on 132 events.
  Form factor alpha_DIP = -1.59 +- 0.37.
  BR(lepton flavor violation) < 4.12 x 10^-11 .
  Published in Phys. Rev. Lett. 90, 141801 (2003).
  PRL abstract, [Plots]
  Presented by Patty McBride at Moriond EW 2003.
• Detailed description is available in PhD thesis by Jason Hamm.
• [OLD Published Result]

K_L->e⁺e^-gamma

• [Plots]
• BR/BR(K_L->pi⁰pi⁰pi⁰_D) = (1.3302 +- 0.0046 +- 0.0102) x 10^-3,
  CalphaK* = -0.517 +- 0.030(fit) +- 0.022(syst.)
  alpha_DIP = -1.729 +- 0.043(fit) +- 0.028(syst.)
  
  Published in Phys. Rev. Lett. 99, 051804 (2007).
  hep-ex/0702039, [Plots]
  presented by Mike Wilking at Moriond EW 2006.
• BR = (10.19 +- 0.04(stat) +- 0.07(syst) +- 0.29 (ext. syst)) x 10^-6 (preliminary)
  based on 93.4k events.
  Form factor, alpha_K* = -0.186 +- 0.011 +- 0.009 (preliminary).
  Presented by Tony Barker at Fermilab Wine and Cheese, June 20, 2003.
  Detailed description is available in Jason LaDue's PhD thesis.

K_L ->e⁺ e^- gamma gamma

• [Plots]
• BR(Egamma*>5MeV) = (5.84 +- 0.15 +- 0.32) x 10^-7 ,
  based on 1543 events including 56+-8 background events.
  Published in Phys. Rev. D 64, 012003 (2001).
  PRD abstract, [Plots]
  
• Full description of the analysis is available in PhD thesis by Peter Mikelson.

K_L->mu⁺mu^-gamma

• [Plots]
• BR = (3.62 +- 0.04 +- 0.08) x 10^-7 ,
  alpha_K* = -0.160 +0.026-0.028,
  alpha = -1.54 +- 0.10,
  rho > -0.2
  Published in Phys. Rev. Lett. 87, 071801 (2001).
  PRL abstract, [Plots]
  
• A full description is available in PhD thesis by Steve Bright

K_L->mu⁺mu^-gamma gamma

• [Plots]
• BR(M_{gamma gamma} > 1MeV/c²) = (10.4 +7.5 -5.9 +- 0.7) x 10^-9,
  BR(Egamma*>10MeV) = (1.42 +1.0 -0.8 +- 0.10) x 10^-9., based on 4 observed events.
  Published in Phys. Rev. D 62, 112001 (2000).
  PRD abstract, [Plots]

Ke3

• |f_T/f_+| <0.14 (90% CL) (preliminary),
  f_s/f_+ = -0.029 +0.008-0.012 +- 0.003 (preliminary),
  |f_s/f_+| <0.04 (90% CL) (preliminary),
  lambda_+ = 0.0274 +-0.008 +- 0.012 (preliminary) , based on ~280k events (3% data),
  presented by Rick Tesarek at DPF99

K_L->pi⁺e^-nu e⁺e^-

• [Plots]
• BR(KL->pi^+-e^-+nu e⁺e^-; M_ee>5MeV/c², E^*_ee > 30MeV) = (1.285 +- 0.041) x 10^-5,
  Gamma(Ke3ee, M_ee>5MeV/c²/Gamma(Ke3) = (4.57 +- 0.04 +- 0.14) x 10^-5
  
  based on 19.2k signal events.
  Presented by B. Tschirhart at Kaon'07.
  Published in Phys. Rev. Lett. 99, 081803 (2007) (5 pages)
  PRL abstract, [Plots]
  Detailed description is available in Katsushige Kotera's PhD thesis.

K_L ->pi⁰ e⁺ e^- gamma

• BR = (1.62 +- 0.14 +- 0.09) x 10^-8
  based on 139 candidate events with 14 background events.
  Published in Phys. Rev. D 76 052001(2007).
  arXiv:0706.4074 (Jun. 28, 2007).
  [PRD abstract], [Plots]
  Presented by Michael Ronquest at HQL2008.
• Full description is available in PhD thesis by Greg Graham.

K_L->pi⁺pi^-pi⁰gamma

• BR(E^cm_gamma > 10MeV) = (1.38 +- 0.03 +- 0.03) x 10^-3 BR(K_L->pi⁺pi^-pi⁰)
  BR = (1.70 +- 0.03 +- 0.04 +- 0.03(norm)) x 10^-4 (both PRELIMINARY)
  based on 2853 candidate events. Presented by A. Ledovskoy at KAON2005.

K_L->pi⁺pi^-pi⁰e⁺e^-

• BR(E_ee>20MeV) = (1.60 +- 0.18(stat)) x 10^-7 (PRELIMINARY)
  based on 132 candidates with 1.2+-0.9 background events. Presented by A. Ledovskoy at KAON2005.

K_L->pi⁰mu e

• [Plots]
• BR < 7.6 x 10^-11 (90% CL) based on no observed events in 1997+1999 data with 0.66+-0.23 expected background events.
  Published in Phys. Rev. Lett. 100, 131803 (2008).
  [PRL abstract], [Plots]
  Presented by Bob Tschirhart at KAON'07.
  Detailed description of an old analysis is available in PhD thesis by Angela Bellavance.

K_L->pi⁰pi⁰mu e

• BR < 1.7 x 10^-10 (90% CL)
  based on no observed events in 1997+1999 data with 0.44 +- 0.23 expected background events.
  Published in Phys. Rev. Lett. 100, 131803 (2008).
  [PRL abstract], [Plots]

pi⁰ ->e⁺ e^-

• [Plots]
• BR(pi⁰->e⁺e^-, (Mee/Mpi⁰)² > 0.95) = (6.44 +- 0.25 +- 0.22) x 10^-8 ,
  based on 794 candidate events with 52.7+-11.2 background events.
  Published in Phys. Rev. D 75, 012004 (2007).
  PRD abstract, [Plots]
  hep-ex/0610072 Detailed description is available in Rune Niclasen's PhD thesis.
• [Old published results]

pi⁰->e⁺e^-gamma

• BR(pi⁰->e⁺e^-gamma) /BR(pi⁰->e⁺e^-) = (1.1539+-0.0045+-0.0152)% (preliminary)
  based on 66.4k decays.
  Presented by Erin Abouzaid at DPF/JPS2006.

pi⁰ ->e⁺ e^- e⁺ e^-

• [Plots]
• BR(pi0 ->4e) BR(pi0->gg)/BR(pi0->eeg)² = 0.2329 +- 0.0015 +- 0.0010,
  BR(pi0->4e; x>0.9) = (3.26+-0.18) x 10^-5,
  based on 30511 candidate decays.
  arXiv:0711.3472 (Feb. 15, 2008).
  Published in Phys. Rev. Lett. 100, 182001 (2008)(May 8, 2008)
  [PRL Abstract], [Plots]
  Detailed description is available in Pat Toale's PhD thesis.
  Presented at HQL2008 by Michael Ronquest.
• alpha (cos 2(ee-ee) dependence) = -0.239 +- 0.030 (Mee >10MeV) (preliminary).
  Presented by Tony Barker at ICHEP98.

pi⁰->mu e

• BR < 3.6 x 10^-10 (90% CL)
  based on no observed events in 1997+1999 data where 0.03+-0.015 expected background events.
  Published in Phys. Rev. Lett. 100, 131803 (2008).
  [PRL abstract], [Plots]
  Presented at HQL2008 by Michael Ronquest.

Cascade⁰ ->Sigma⁺ e^- nu-bar

• BR = (2.54 +- 0.11 +- 0.16) x 10^-4 (preliminary)
  based on 626+-25 signal events.
  Presented by Ashkan Alavi-Harati at DPF99.
  Full description is available in PhD thesis by Ashkan Alavi-Harati.
• BR = (2.71 +- 0.22 +- 0.31) x 10^-4 , based on 176 events after background subtraction.
  Published in Phys. Rev. Lett. 82, 3751 (1999).
  PRL abstract
• 65 Anti-cascade beta decay events, shown by Doug Jensen at HQ98.
• S_e = 1.020 +- 0.037 +- 0.043 (preliminary) ,
  where S_e is the average polarization of the Sigma⁺ along the direction of the e^- in the decay.
  Presented by Steve Bright at the Lake Louise Winter Institute (1999).

Cascade⁰ -> Sigma⁺ e^- nu-bar form factors

• g1/f1 = 1.32 +0.21-0.17(stat.) +/- 0.05(syst.)
  g2/f1 = -1.7 +2.1-2.0(stat). +- 0.5(syst.)
  f2/f1 = 2.0 +- 1.2 (stat)+-0.5(syst)
  Published in Phys. Rev. Lett. 87, 132001 (2001).
  PRL abstract.
  Full description is available in PhD thesis by Steve Bright.

Cascade⁰ ->Sigma⁺ mu^- nu-bar

• Gamma(Cascade⁰->Sigma⁺mu^-nu)/ Gamma(Cascade⁰->Sigma⁺e^-nu) = (1.8^+0.7_-0.5+-0.2) x 10^-2,
  based on 9 observed events.
  Publilshed in Phys. Rev. Lett. 95, 081801 (2005).
  PRL abstract hep-ex/0504055
  [Plots]
  Full description is available in PhD thesis by Ricardo Avelino Gomes.

Cascade⁰ ->Sigma⁰ gamma

• [Plots]
• BR = (3.34 +- 0.05 +- 0.09) X 10^-3 , based on 4045 signal events over 804 background events.
  Decay asymmetry alpha = -0.63 +- 0.09 .
  Published in Phys. Rev. Lett. 86, 3239-3243 (2001).
  PRL abstract, [Plots]
  

Cascade⁰ ->Lambda gamma

• BR/BR(Cacdade -> Lambda pi0) = (0.94 +- 0.03) x 10^-3 (preliminary) , based on 1100 events,
  presented by Doug Jensen, at HQ98.

Cascade⁰ ->Lambda pi⁰

• proton-Lambda spin correlation in Lambda frame,
  alpha_Lambda x alpha_Cascade = -0.288 +- 0.007 +- 0.016 (preliminary),
  based on summer data.
  Presented by Roland Winston at ICHEP2000.

Cascade0 polarization

• [Plots]
• Cascade⁰ : P_y = -0.097 +- 0.007 +- 0.013 for p_t = 1.38GeV/c
  Anti Cascade⁰ : P_y = 0.000 +- 0.013 +- 0.013 for p_t = 1.22GeV/c.
  Published in Phys. Rev. D 75, 012005 (2007).
  PRD abstract [Plots]

H dibaryon

• Excluded H (uuddss bound state) in 2.194 < M_H(GeV/c²) <2.231, with lifetimes from ~5E-10sec to ~1E-3sec.
  Published in Phys. Rev. Lett. 84, 2593 (2000).
  PRL abstract
  

KTeV E832 results

[Top] [E799]

epsilon'/epsilon

• [Plots]
• Re(e'/e) = (19.2 +- 1.1(stat) +- 1.8(syst)) x 10^-4
  = (19.2 +- 2.1) x 10^-4
  based on full (1997 + 1999) data set. This result supersedes the published result shown below.
  Presented by Elizabeth Worcester at Fermilab Wine and Cheese on Feb. 25, 2008.
  Published in Phys. Rev. D 83, 092001 (2011).
  PRD abstract
  submitted version, arXiv 1011.0127 [Plots]
  Full description is available in PhD thesis by Elizabeth Turner Worcester
• [OLD Published Result]

delta m, tau_S, Phi_+-, delta Phi (CPT test)

• [Plots]
• delta m = (5269.9 +- 12.3) x 10⁶h/s (assuming CPT)
  tau_S = (89.623 +- 0.047) x 10^-12s (assuming CPT)
  phi_epsilon = (43.86 +- 0.63)^o (No CPT assumption)
  phi_epsilon - phi_SW = (0.40 +- 0.56)^o (No CPT assumption)
  delta phi = (0.30 +- 0.35)^o (No CPT assumption)
  (All preliminary)
  based on full (1997 + 1999) data set. These results supersede the published result shown below.
  Presented by Elizabeth Worcester at Fermilab Wine and Cheese on Feb. 25, 2008.
  Published in Phys. Rev. D 83, 092001 (2011).
  PRD abstract
  submitted version, arXiv 1011.0127, [Plots]
  

K_L->pi e nu charge asymmetry

• [Plots]
• delta = (3322 +- 58 (stat) +- 47 (syst) ) x 10^-6
  Published in Phys. Rev. Lett. 88, 181601 (2002).
  PRL abstract, [Plots]
  Full description is available in PhD thesis by G. Colin Bown.

K_L ->pi⁺ pi^- gamma

• [Plots]
• |g_M1| = 1.198 +- 0.035 +- 0.086
  a1/a2 = -0.738 +- 0.007 +- 0.018 GeV²/c²
  |g_E1| < 0.21 (90% CL)
  DE/(DE+IB) = 0.689 +- 0.021 (E_gamma* >= 20MeV
  based on 112.1k events with 671+-41 background events.
  Phys. Rev. D 74, 032004 (2006) [Plots]

K_L ->pi⁰ gamma gamma

• [Plots]
• BR = (1.29 +- 0.03 +- 0.05) x 10^-6 and
  a_v = -0.31 +- 0.05 +- 0.07
  based on 1982 events with 608 background events collected from 1997 to 2000. These result supersede earlier KTeV results.
  Published in Phys. Rev. D 77, 112004 (2008). arXiv:0805.0031
  [Plots]
  Detailed description is available in PhD thesis by Jianbo Wang.
  Presented at HQL2008 by Michael Ronquest.

K_e3 radiative decay

• [Plots]
• BR (Ke3gamma, Egamma^*>30 MeV, theta_{e gamma}* >20 deg)/BR (Ke3) = 0.908+-0.008(stat)_-0.012^+0.013(syst)%
  Published in Phys. Rev. D 64, 112004 (2001).
  PRD abstract [Plots]
  

K_L->pi⁰pi⁰pi⁰ Dalitz Plot

• [Plots]
• Dalitz parameters: h₀₀₀ = (-2.09 +- 0.62 stat +- 0.72 syst +- 0.28 ext) x 10^-3,
  m_m+(a₀-a₂) = 0.215 +- 0.014 stat +- 0.025 syst +- 0.006 ext
  Published in Phys. Rev. D 78, 032009 (2008).
  [Plots]
  Presented by Rick Kessler at Beach 2008.

K_L->pi⁺pi^-pi⁰gamma

• BR(E^*_gamma > 10MeV) = (1.66 +- 0.05) x 10^-4 (PRELIMINARY)
  Full description is available in PhD thesis by Miguel Barrio (Dec. 2001)

|V_us|

• [Plots]
• |V_us| = 0.2252 +- 0.0008(KTeV) +- 0.0021(ext)
  |eta_+-| = (2.228 +- 0.005(KTeV) +- 0.009(ext)) x 10^-3
  Published in Phys. Rev. Lett. 93, 181802 (2004) , PRL abstract
  hep-ex/0406001 [Plots]
  Presented by Rick Kessler at Heavy Quark & Leptons 2004, and
  Ed Blucher at Fermilab Wine and Cheese.

K_L Branching Fractions and |eta_+-|

• [Plots]
• B(K_L->pi e nu) = 0.4067 +- 0.0011
  B(K_L->pi mu nu) = 0.2701 +- 0.0009
  B(K_L->pi⁺pi^-pi⁰) = 0.1252 +- 0.0007
  B(K_L->pi⁰pi⁰pi⁰) = 0.1945 +- 0.0018
  B(K_L->pi⁺pi^-) = (1.975+-0.012) x 10^-3
  B(K_L->pi⁰pi⁰) = (0.865 +- 0.010) x 10^-3
  |eta_+-| = (2.228 +- 0.010) x 10^-3
  Published in Phys. Rev. D 70, 092006 (2004).
  PRD abstract, hep-ex/0406002 [Plots]
  Presented by Rick Kessler at Heavy Quark & Leptons 2004, and
  Ed Blucher at Fermilab Wine and Cheese.

Kl3 Form Factors

• I(Ke3) = 0.15446 +- 0.00025, I(Kmu3) = 0.10219 +- 0.00025,
  lnC = 0.1915 +- 0.0122 (C:Callan-Treiman point).
  Published in Phys. Rev. D 81, 052001 (2010).
  PRD abstract [Plots]
• I(Ke3) = 0.15392 +- 0.00048
  based on reanalyzed 2M Ke3 events using a new form factor expansion.
  Published in Phys. Rev. D 74, 097101 (2006).
  PRD abstract [Plots]
• f₊(t): lambda'₊ = (20.64 +- 1.75) x 10^-3, lambda''₊ = (3.20 +- 0.69) x 10^-3.
  f₀(t): lambda₀ = (13.72 +- 1.31) x 10^-3.
  Phase space integrals:
  I(Kmu3) = 0.10165 +- 0.00080
  based on 1.9M Ke3 and 1.5M Kmu3 decays.
  Published in Phys. Rev. D 70, 092007 (2004).
  PRD abstract, hep-ex/0406003 [Plots]
  Presented by Rick Kessler at Heavy Quark & Leptons 2004, and
  Ed Blucher at Fermilab Wine and Cheese.

Kl3 Radiative Decays

• [Plots]
• Gamma(KL->pi mu nu gamma; E_g^*>10MeV) / Gamma(KL->pi mu nu) = 0.530 +- 0.019% based on 1385 events, and
  Gamma(KL->pi e nu gamma; E_g^*>10MeV) / Gamma(KL->pi e nu) = 4.942 +- 0.062% based on 14221 events.
  Published in Phys. Rev. D 71, 012001 (2005).
  PRD abstract, [Plots]
  hep-ex/0410070

K^*

• [Plots]
• Gamma(K₁(1400)) = 280.8 +- 23.2(stat) +- 40.4(syst) keV,
  Gamma(K₁(1270)) = 73.2 +- 6.1(stat) +- 28.3(syst) keV,
  based on 147 candidate events.
  Gamma(K^*(1410); vector state) < 52.9 keV (90% CL),
  Gamma(K^*₂(1430); tensor state) < 5.4 keV (90% CL).
  Published in Phys. Rev. Lett. 89, 072001 (2002),
  PRL abstract [Plots]
  

R⁰: Light Gluino

• [Plots]
• Excluded the decays R0->pi⁺ pi^- photino and R0->pi⁰ photino for the masses of R0 and photino in the theoretically allowed range, including 3E-10s <R0 lifetime <1E-3s for R0 mass <3GeV/c².
  Published in Phys. Rev. Lett. 83, 2128-2132 (1999)
  PRL abstract, [Plots]
  
• [OLD Published Result]

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