Ashkan Alavi-Harati

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A. Alavi-Harati, T. Alexopoulos, M. Arenton, K. Arisaka, S. Averitte, R. F. Barbosa,* A. R. Barker, M. Barrio, L. Bellantoni, A. Bellavance, J. Belz, D. R. Bergman, E. Blucher, G. J. Bock, C. Bown, S. Bright, E. Cheu, S. Childress, R. Coleman, M. D. Corcoran, G. Corti, B. Cox, A. R. Erwin, R. Ford, A. Glazov, A. Golossanov, G. Graham, J. Graham, E.(More)
Search for the Rare Decay KL ! 0e e A. Alavi-Harati, T. Alexopoulos, M. Arenton, R. F. Barbosa, A. R. Barker,* M. Barrio, L. Bellantoni, A. Bellavance, E. Blucher, G. J. Bock, C. Bown, S. Bright, E. Cheu, R. Coleman, M. D. Corcoran, B. Cox, A. R. Erwin, C. O. Escobar, R. Ford, A. Glazov, A. Golossanov, R. A. Gomes, P. Gouffon, J. Graham, J. Hamm, K.(More)
A. Alavi-Harati,12 I. F. Albuquerque,10 T. Alexopoulos,12 M. Arenton,11 K. Arisaka,2 S. Averitte,10 A. R. Barker,5 L. Bellantoni,7 A. Bellavance,9 J. Belz,10 R. Ben-David,7 D. R. Bergman,10 E. Blucher,4 G. J. Bock,7 C. Bown,4 S. Bright,4 E. Cheu,1 S. Childress,7 R. Coleman,7 M. D. Corcoran,9 G. Corti,11 B. Cox,11 M. B. Crisler,7 A. R. Erwin,12 R. Ford,7 A.(More)
We present the first measurement of the form factor ratios g(1)/f(1) (direct axial vector to vector), g(2)/f(1) (second class current), and f(2)/f(1) (weak magnetism) for the decay Xi(0)-->Sigma(+)e(-)nu macro(e) using the KTeV (E799) beam line and detector at Fermilab. From the Sigma(+) polarization measured with the decay Sigma(+)-->p pi(0) and the(More)
The KTeV/E799 experiment at Fermilab has searched for the rare kaon decay K(L)-->pi(0)e(+)e(-). This mode is expected to have a significant CP violating component. The measurement of its branching ratio could support the standard model or could indicate the existence of new physics. This Letter reports new results from the 1999-2000 data set. One event is(More)
We have collected a 43 event sample of the decay K(L)-->e(+)e(-)mu(+)mu(-) with negligible backgrounds and measured its branching ratio to be (2.62+/-0.40+/-0.17)x10(-9). We see no evidence for CP violation in this decay. In addition, we set the 90% confidence upper limit on the combined branching ratios for the lepton flavor violating decays(More)
We observe 441 K(L)-->e(+)e(-)e(+)e(-) candidate events with a background of 4.2 events and measure B(K(L)-->e(+)e(-)e(+)e(-)) = [3.72+/-0.18(stat)+/-0.23(syst)]x10(-8) in the KTeV/E799II experiment at Fermilab. Using the distribution of the angle between the planes of the e(+)e(-) pairs, we measure the CP parameters beta(CP) =(More)
The KTeV experiment at Fermilab has isolated a total of 132 events from the rare decay K(L)-->e+ e- mu+ mu-, with an estimated background of 0.8 events. The branching ratio of this mode is determined to be [2.69+/-0.24(stat)+/-0.12(syst)]x10(-9), with a radiative cutoff of M(2)(ee mu mu)/M(2)(K)>0.95. The first measurement using this mode of the parameter(More)
We use K(L)'s in the 100-200 GeV energy range to produce 147 candidate events of the axial vector pair K1(1270)-K1(1400) in the nuclear Coulomb field of a Pb target and determine the radiative widths Gamma(K1(1400)-->K0+gamma)=280.8+/-23.2(stat)+/-40.4(syst) keV and Gamma(K1(1270)-->K0+gamma)=73.2+/-6.1(stat)+/-28.3(syst) keV. These first measurements(More)
E. Abouzaid, A. Alavi-Harati, T. Alexopoulos, M. Arenton, A.R. Barker, L. Bellantoni, A. Bellavance, E. Blucher, G.J. Bock, S. Bright, E. Cheu, R. Coleman, M.D. Corcoran, B. Cox, A.R. Erwin, C.O. Escobar, R. Ford, A. Glazov, A. Golossanov, R.A. Gomes, P. Gouffon, K. Hanagaki, Y.B. Hsiung, H. Huang, D.A. Jensen, R. Kessler, K. Kotera, A. Ledovskoy, P.L.(More)