First Measurement of the {ital T}-Odd Correlation between the {ital Z}{sup 0} Spin and the Three-Jet Plane Orientation in Polarized {ital Z}{sup 0} Decays into Three Jets

Journal Article · Mon Dec 04 00:00:00 EST 1995 · Physical Review Letters

DOI:https://doi.org/10.1103/PhysRevLett.75.4173· OSTI ID:151410

Abe, K; Abt, I; Ahn, C J; Akagi, T; Allen, N J; Ash, W W; Aston, D; Baird, K G; Baltay, C; Band, H R; Barakat, M B; Baranko, G; Bardon, O; Barklow, T; Bazarko, A O; Ben-David, R; Benvenuti, A C; Bienz, T; Bilei, G M; Bisello, D ; Blaylock, G; Bogart, J R; Bolton, T; Bower, G R; Brau, J E; Breidenbach, M; Bugg, W M; Burke, D; Burnett, T H; Burrows, P N; Busza, W; Calcaterra, A; Caldwell, D O; Calloway, D; Camanzi, B; Carpinelli, M; Cassell, R; Castaldi, R; Castro, A; Cavalli-Sforza, M; Church, E; Cohn, H O; Coller, J A; Cook, V; Cotton, R; Cowan, R F; Coyne, D G; D`Oliveira, A; Damerell, C J.S.; Daoudi, M; De Sangro, R; De Simone, P; Dell`Orso, R; Dima, M; Du, P Y.C.; Dubois, R; Eisenstein, B I; Elia, R; Falciai, D; Fero, M J; Frey, R; Furuno, K; Gillman, T; Gladding, G; Gonzalez, S; Hallewell, G D; Hart, E L; Hasegawa, Y; Hedges, S; Hertzbach, S S; Hildreth, M D; Huber, J; Huffer, M E; Hughes, E W; Hwang, H; Iwasaki, Y; Jackson, D J; Jacques, P; Jaros, J; Johnson, A S; Johnson, J R; Johnson, R A; Junk, T; Kajikawa, R; Kalelkar, M; Kang, H J; Karliner, I; Kawahara, H; Kendall, H W; Kim, Y; King, M E; King, R; Kofler, R R; Krishna, N M; Kroeger, R S; Labs, J F; Langston, M; Lath, A; Lauber, J A; Leith, D W.G.; Liu, M X; Liu, X; Loreti, M; Lu, A; Lynch, H L; Ma, J; Mancinelli, G; Manly, S; Mantovani, G; Markiewicz, T W; Maruyama, T; Massetti, R; Masuda, H; Mattison, T S; Mazzucato, E; McKemey, A K; Meadows, B T; Messner, R; Mockett, P M; Moffeit, K C; Mours, B; Mueller, G; Muller, D; Nagamine, T; Nauenberg, U; Neal, H; Nussbaum, M; Ohnishi, Y; Osborne, L S; Panvini, R S; Park, H; Pavel, T J; Peruzzi, I; Piccolo, M; Piemontese, L; Pieroni, E; Pitts, K T; Plano, R J; Prepost, R; Prescott, C Y; Punkar, G D; Quigley, J; Ratcliff, B N; Reeves, T W; Reidy, J; Rensing, P E; Rochester, L S; Rothberg, J E; Rowson, P C

We present the first measurement of the correlation between the {ital Z}{sup 0} spin and the event-plane orientation in polarized {ital Z}{sup 0} decays into three jets in the SLAC Linear Collider Large Detector experiment at SLAC utilizing a longitudinally polarized electron beam. The {ital CP}-even and {ital T}-odd triple product {ital {rvec S}}{sub {ital Z}}{center_dot}({ital {rvec k}}{sub 1}{times}{ital {rvec k}}{sub 2}), formed from the two fastest jet momenta {ital {rvec k}}{sub 1} and {ital {rvec k}}{sub 2} and the {ital Z}{sup 0} polarization vector {ital {rvec S}}{sub {ital Z}}, is sensitive to physics beyond the standard model. We measure the expectation value of this quantity to be consistent with zero and set 95% C.L. limits of {minus}0.022{lt}{beta}{lt}0.039 on the correlation. {copyright} {ital 1995} {ital The} {ital American} {ital Physical} {ital Society}.

• OSTI ID: 151410
• Journal Information: Physical Review Letters, Vol. 75, Issue 23; Other Information: PBD: 4 Dec 1995
• Country of Publication: United States
• Language: English

Related Subjects

66 PHYSICS
ORIENTATION
CORRELATIONS
PARTICLE DECAY
SPIN
Z NEUTRAL BOSONS
CP INVARIANCE
ELECTRON BEAMS
JETS
POLARIZATION
POLARIZED BEAMS
STANDARD MODEL
STANFORD LINEAR COLLIDER DETECTOR
T INVARIANCE