Measurement of the Spin of the Ω- Hyperon

被引：34

作者：

Aubert, B. ^{[1
]}

Barate, R.

Bona, M.

Boutigny, D.

Couderc, F.

Karyotakis, Y.

Lees, J. P.

Poireau, V.

Tisserand, V.

Zghiche, A.

Grauges, E.

Palano, A.

Chen, J. C.

Qi, N. D.

Rong, G.

Wang, P.

Zhu, Y. S.

Eigen, G.

Ofte, I.

Stugu, B.

Abrams, G. S.

Battaglia, M.

Brown, D. N.

Button-Shafer, J.

Cahn, R. N.

Charles, E.

Gill, M. S.

Groysman, Y.

Jacobsen, R. G.

Kadyk, J. A.

Kerth, L. T.

Kolomensky, Yu. G.

Kukartsev, G.

Lynch, G.

Mir, L. M.

Oddone, P. J.

Orimoto, T. J.

Pripstein, M.

Roe, N. A.

Ronan, M. T.

Wenzel, W. A.

Sanchez, P. del Amo

Barrett, M.

Ford, K. E.

Harrison, T. J.

Hart, A. J.

Hawkes, C. M.

Morgan, S. E.

Watson, A. T.

Goetzen, K.

机构：

[1] Phys Particules Lab, F-74941 Annecy Le Vieux, France

[2] Univ Barcelona, Dept ECM, Fac Fis, E-08028 Barcelona, Spain

[3] Univ Bari, Dipartimento Fis, I-70126 Bari, Italy

[4] Univ Bari, Ist Nazl Fis Nucl, I-70126 Bari, Italy

[5] Inst High Energy Phys, Beijing 100039, Peoples R China

[6] Univ Bergen, Inst Phys, N-5007 Bergen, Norway

[7] Univ Calif Berkeley, Berkeley, CA 94720 USA

[8] Lawrence Berkeley Natl Lab, Berkeley, CA 94720 USA

[9] Univ Birmingham, Birmingham B15 2TT, W Midlands, England

[10] Ruhr Univ Bochum, Inst Expt Phys 1, D-44780 Bochum, Germany

[11] Univ Bristol, Bristol BS8 1TL, Avon, England

[12] Univ British Columbia, Vancouver, BC V6T 1Z1, Canada

[13] Brunel Univ, Uxbridge UB8 3PH, Middx, England

[14] Budker Inst Nucl Phys, Novosibirsk 630090, Russia

[15] Univ Calif Irvine, Irvine, CA 92697 USA

[16] Univ Calif Los Angeles, Los Angeles, CA 90024 USA

[17] Univ Calif Riverside, Riverside, CA 92521 USA

[18] Univ Calif San Diego, La Jolla, CA 92093 USA

[19] Univ Calif Santa Barbara, Santa Barbara, CA 93106 USA

[20] Univ Calif Santa Cruz, Inst Particle Phys, Santa Cruz, CA 95064 USA

[21] CALTECH, Pasadena, CA 91125 USA

[22] Univ Cincinnati, Cincinnati, OH 45221 USA

[23] Colorado State Univ, Ft Collins, CO 80523 USA

[24] Univ Colorado, Boulder, CO 80309 USA

[25] Univ Dortmund, Inst Phys, D-44221 Dortmund, Germany

[26] Tech Univ Dresden, Inst Kern & Teilchenphys, D-01062 Dresden, Germany

[27] Ecole Polytech, Lab Leprince Ringuet, F-91128 Palaiseau, France

[28] Univ Edinburgh, Edinburgh EH9 3JZ, Midlothian, Scotland

[29] Univ Ferrara, Dipartimento Fis, I-44100 Ferrara, Italy

[30] Univ Ferrara, Ist Nazl Fis Nucl, I-44100 Ferrara, Italy

[31] Ist Nazl Fis Nucl, Lab Nazl Frascati, I-00044 Frascati, Italy

[32] Univ Genoa, Dipartimento Fis, I-16145 Genoa, Italy

[33] Univ Genoa, Ist Nazl Fis Nucl, I-16145 Genoa, Italy

[34] Harvard Univ, Cambridge, MA 02138 USA

[35] Heidelberg Univ, Inst Phys, D-69120 Heidelberg, Germany

[36] Univ London Imperial Coll Sci & Technol, London SW7 2AZ, England

[37] Univ Iowa, Iowa City, IA 52242 USA

[38] Iowa State Univ, Ames, IA 50011 USA

[39] Johns Hopkins Univ, Baltimore, MD 21218 USA

[40] Univ Karlsruhe, Inst Expt Kernphys, D-76021 Karlsruhe, Germany

[41] CNRS, IN2P3, Accelerateur Lineaire Lab, F-91898 Orsay, France

[42] Univ Paris Sud 11, Ctr Sci Orsay, F-91898 Orsay, France

[43] Lawrence Livermore Natl Lab, Livermore, CA 94550 USA

[44] Univ Liverpool, Liverpool L69 7ZE, Merseyside, England

[45] Queen Mary Univ London, London E1 4NS, England

[46] Univ London Royal Holloway & Bedford New Coll, Egham TW20 0EX, Surrey, England

[47] Univ Louisville, Louisville, KY 40292 USA

[48] Univ Manchester, Manchester M13 9PL, Lancs, England

[49] Univ Maryland, College Pk, MD 20742 USA

[50] Univ Massachusetts, Amherst, MA 01003 USA

来源：

PHYSICAL REVIEW LETTERS | 2006年 / 97卷 / 11期

基金：

英国科学技术设施理事会;

关键词：

D O I：

10.1103/PhysRevLett.97.112001

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

A measurement of the spin of the Omega(-) hyperon produced through the exclusive process Xi(0)(c)->Omega K--(+) is presented using a total integrated luminosity of 116 fb(-1) recorded with the BABAR detector at the e(+)e(-) asymmetric-energy B factory at SLAC. Under the assumption that the Xi(0)(c) has spin 1/2, the angular distribution of the Lambda from Omega(-)->Lambda K- decay is inconsistent with all half-integer Omega(-) spin values other than 3/2. Lower statistics data for the process Omega(0)(c)->Omega(-)pi(+) from a 230 fb(-1) sample are also found to be consistent with Omega(-) spin 3/2. If the Xi(0)(c) spin were 3/2, an Omega(-) spin of 5/2 could not be excluded.

引用

页数：7

共 13 条

[1] TOTAL CROSS SECTIONS OF POSITIVE PIONS IN HYDROGEN [J].

ANDERSON, HL ;

FERMI, E ;

LONG, EA ;

NAGLE, DE .

PHYSICAL REVIEW, 1952, 85 (05) :936-936

[2] The BABAR detector [J].

Aubert, B ;

Bazan, A ;

Boucham, A ;

Boutigny, D ;

De Bonis, I ;

Favier, J ;

Gaillard, JM ;

Jeremie, A ;

Karyotakis, Y ;

Le Flour, T ;

Lees, JP ;

Lieunard, S ;

Petitpas, P ;

Robbe, P ;

Tisserand, V ;

Zachariadou, K ;

Palano, A ;

Chen, GP ;

Chen, JC ;

Qi, ND ;

Rong, G ;

Wang, P ;

Zhu, YS ;

Eigen, G ;

Reinertsen, PL ;

Stugu, B ;

Abbott, B ;

Abrams, GS ;

Amerman, L ;

Borgland, AW ;

Breon, AB ;

Brown, DN ;

Button-Shafer, J ;

Clark, AR ;

Dardin, S ;

Day, C ;

Dow, SF ;

Fan, Q ;

Gaponenko, I ;

Gill, MS ;

Goozen, FR ;

Gowdy, SJ ;

Gritsan, A ;

Groysman, Y ;

Hernikl, C ;

Jacobsen, RG ;

Jared, RC ;

Kadel, RW ;

Kadyk, J ;

Karcher, A .

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT, 2002, 479 (01) :1-116

[3] OBSERVATION OF HYPERON WITH STRANGENESS MINUS 3 [J].

BARNES, VE ;

LAI, KW ;

CULWICK, BB ;

LEITNER, J ;

WILLIS, WJ ;

LLOYD, JL ;

OREN, Y ;

SHUTT, RP ;

SANFORD, JR ;

WEBSTER, MS ;

STRAND, RC ;

SMITH, JR ;

PALMER, RB ;

LONDON, GW ;

DELANEY, WC ;

SAMIOS, NP ;

RADOJICIC, D ;

JENSEN, JE ;

HORWITZ, N ;

MORRIS, TW ;

CONNOLLY, PL ;

CRENNELL, DJ ;

RAHM, DC ;

PRODELL, AG ;

HART, EL ;

STONEHILL, DL ;

HOUGH, PVC ;

THORNDIKE, AM ;

YAMAMOTO, SS ;

RICHARDSON, CR ;

KOPP, JK ;

FOWLER, WB ;

HAGERTY, PE .

PHYSICAL REVIEW LETTERS, 1964, 12 (08) :204-&

[4] STUDY OF LIFETIME AND SPIN OF OMEGA-PRODUCED IN K-P INTERACTIONS AT 8.25-GEV-C [J].

BAUBILLIER, M ;

BLOODWORTH, IJ ;

BOSSEN, GJ ;

BURNS, A ;

CARNEY, JN ;

CORDEN, MJ ;

COWAN, CA ;

COX, GF ;

DELIMA, CJ ;

DIXON, D ;

GAVILLET, P ;

KINSON, JB ;

KNUDSON, K ;

LEVY, F ;

MCCANN, H ;

MACDERMOTT, M ;

NEGUS, PJ ;

OH, BH ;

PRATAP, M ;

QUERCIGH, E ;

RIVOAL, M ;

SCARR, JM ;

SHIERS, JC ;

SMITH, GA ;

TEODORO, D ;

VILLALOBOSBAILLIE, O ;

VOTRUBA, MF ;

WHITMORE, J ;

ZITOUN, R .

PHYSICS LETTERS B, 1978, 78 (2-3) :342-346

[5]

CHUNG SU, 1971, 718 CERN

[6] SPIN AND LIFETIME OF OMEGA- HYPERON [J].

DEUTSCHMANN, M ;

OTTER, G ;

BOTTCHER, H ;

SCHREIBER, HJ ;

COCCONI, VT ;

KELLNER, G ;

KOCHER, DJ ;

MORRISON, DRO ;

SAARIKKO, H ;

WERNHARD, KL ;

KUHN, D ;

EASON, RM ;

POLLOCK, B ;

MANDL, F ;

MARKYTAN, M .

PHYSICS LETTERS B, 1978, 73 (01) :96-98

[7] The application of group theory to the quantum dynamics of monatomic systems [J].

Eckart, C .

REVIEWS OF MODERN PHYSICS, 1930, 2 (03) :0305-0380

[8] Review of particle physics [J].

Eidelman, S ;

Hayes, KG ;

Olive, KA ;

Aguilar-Benitez, M ;

Amsler, C ;

Asner, D ;

Babu, KS ;

Barnett, RM ;

Beringer, J ;

Burchat, PR ;

Carone, CD ;

Caso, C ;

Conforto, G ;

Dahl, O ;

D'Ambrosio, G ;

Doser, M ;

Feng, JL ;

Gherghetta, T ;

Gibbons, L ;

Goodman, M ;

Grab, C ;

Groom, DE ;

Gurtu, A ;

Hagiwara, K ;

Hernández-Rey, JJ ;

Hikasa, K ;

Honscheid, K ;

Jawahery, H ;

Kolda, C ;

Kwon, Y ;

Mangano, ML ;

Manohar, AV ;

March-Russell, J ;

Masoni, A ;

Miquel, R ;

Mönig, K ;

Murayama, H ;

Nakamura, K ;

Navas, S ;

Pape, L ;

Patrignani, C ;

Piepke, A ;

Raffelt, G ;

Roos, M ;

Tanabashi, M ;

Terning, J ;

Törnqvist, NA ;

Trippe, TG ;

Vogel, P ;

Wohl, CG .

PHYSICS LETTERS B, 2004, 592 (1-4) :1-1109

[9]

Gell-Mann M., 1962, P INT C HIGH EN NUCL, P805

[10] OMEGA-PRODUCED IN K-P REACTIONS AT 4.2 GEV-C [J].

HEMINGWAY, RJ ;

ARMENTEROS, R ;

DIONISI, C ;

GAVILLET, P ;

GURTU, A ;

HOLMGREN, SO ;

LOSTY, MJ ;

MARIN, JC ;

MAZZUCATO, M ;

MONTANET, L ;

BANTING, M ;

BLOKZIJL, R ;

DEGROOT, AJ ;

JONGEJANS, B ;

KLUYVER, JC ;

VANLEEUWEN, WM ;

MASSARO, GGG ;

TENNER, AG ;

WOLTERS, GF ;

HEINEN, PM ;

KITTEL, EW ;

METZGER, WJ ;

TIECKE, HGJM ;

TIMMERMANS, JJM ;

VANDEWALLE, RT ;

FOSTER, B ;

GROSSMANN, P ;

LAMB, PR ;

LLOYD, JL ;

WELLS, J .

NUCLEAR PHYSICS B, 1978, 142 (03) :205-219

← 1 2 →