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Koike Y, Yabe K, Yoshida S. Hyperon polarization from the twist-3 distribution in unpolarized proton-proton collision. Int J Clin Exp Med 2015. [DOI: 10.1103/physrevd.92.094011] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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Abouzaid E, Alavi-Harati A, Alexopoulos T, Arenton M, Barker AR, Bellantoni L, Bellavance A, Blucher E, Bock GJ, Bright S, Cheu E, Coleman R, Corcoran MD, Cox B, Erwin AR, Escobar CO, Ford R, Glazov A, Golossanov A, Gomes RA, Gouffon P, Hanagaki K, Hsiung YB, Huang H, Jensen DA, Kessler R, Kotera K, Ledovskoy A, McBride PL, Monnier E, Nelson KS, Nguyen H, Niclasen R, Ping H, Prasad V, Qi XR, Ramberg EJ, Ray RE, Ronquest M, Rooker T, Santos E, Shields J, Slater W, Smith DE, Solomey N, Swallow EC, Toale PA, Tschirhart R, Velissaris C, Wah YW, Wang J, White HB, Whitmore J, Wilking M, Winstein B, Winston R, Worcester ET, Worcester M, Yamanaka T, Zimmerman ED, Zukanovich RF. Ξ0andΞ¯0polarization measurements at800 GeV/c. Int J Clin Exp Med 2007. [DOI: 10.1103/physrevd.75.012005] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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Hui D, Zuo-tang L. Hyperon polarization in different inclusive production processes in unpolarized high energy hadron-hadron collisions. Int J Clin Exp Med 2004. [DOI: 10.1103/physrevd.70.014019] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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Chakravorty A, Diehl HT, Duryea J, Guglielmo G, Heller K, Ho PM, James C, Johns K, Kaplan DM, Longo MJ, Luk KB, Rameika R, Rubin HA, Teige S, Thomson GB, Zou Y. Measurement of decay parameters for Xi- --> Lambda pi- decay. PHYSICAL REVIEW LETTERS 2003; 91:031601. [PMID: 12906410 DOI: 10.1103/physrevlett.91.031601] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/19/2003] [Indexed: 05/24/2023]
Abstract
Based on 1.35 x 10(6) polarized Xi(-) events, we measure the parameter phi(Xi) to be -1.61 degrees +/-2.66 degrees +/-0.37 degrees for the Xi(-)-->Lambda pi(-) decay. New results for the parameters beta(Xi) and gamma(Xi) are also presented. Assuming that the CP-violating phase difference is negligible, we deduce the strong phase difference between the P-wave and S-wave amplitudes of the Lambda pi final state to be 3.17 degrees +/-5.28 degrees +/-0.73 degrees, reducing the uncertainty in estimating the level of CP violation in Xi-hyperon decay.
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Affiliation(s)
- A Chakravorty
- Physics Division, Illinois Institute of Technology, Chicago, Illinois 60616, USA
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Yang JJ. Flavor and spin structure of quark fragmentation functions in a diquark model for octet baryons. Int J Clin Exp Med 2002. [DOI: 10.1103/physrevd.65.094035] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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Félix J, Berisso MC, Christian DC, Gara A, Gottschalk EE, Gutiérrez G, Hartouni EP, Knapp BC, Kreisler MN, Lee S, Markianos K, Moreno G, Reyes MA, Sosa M, Wang MHLS, Wehmann A, Wesson D. Lambda(0) polarization in 800-GeV/cpp --> p(f)(Lambda0K+). PHYSICAL REVIEW LETTERS 2002; 88:061801. [PMID: 11863796 DOI: 10.1103/physrevlett.88.061801] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/18/2001] [Indexed: 05/23/2023]
Abstract
We report results from a study of Lambda(0) polarization in the exclusive reaction pp --> p(f)(Lambda0K+) at 800-GeV/c. We observe a dependence of the polarization on the Lambda0K+ invariant mass with large (+71%) positive polarization at small mass (1.63-GeV/c(2)) and large (-43%) negative polarization at large mass (2.75-GeV/c(2)). This observation confirms the result of the CERN ISR R608 experiment and extends the range over which the effect is observed. The strong dependence of the polarization on the Lambda0K+ invariant mass suggests that the origin of the polarization is closely related to the production dynamics of the diffractively produced Lambda0K+ system.
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Affiliation(s)
- J Félix
- Universidad de Guanajuato, León, Guanajuato, México
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Luk KB, Diehl HT, Duryea J, Guglielmo G, Heller K, Ho PM, James C, Johns K, Longo MJ, Rameika R, Teige S, Thomson GB, Zou Y. Search for direct CP violation in nonleptonic decays of charged Xi and lambda hyperons. PHYSICAL REVIEW LETTERS 2000; 85:4860-4863. [PMID: 11102136 DOI: 10.1103/physrevlett.85.4860] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/17/2000] [Indexed: 05/23/2023]
Abstract
A search for direct CP violation in the nonleptonic decays of hyperons has been performed. In comparing the product of the decay parameters, alpha(Xi)alpha(Lambda), in terms of an asymmetry parameter, A(XiLambda), between hyperons and antihyperons in the charged Xi-->Lambdapi and Lambda-->ppi decay sequence, we found no evidence of direct CP violation. The parameter A(XiLambda) was measured to be 0.012+/-0.014.
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Affiliation(s)
- KB Luk
- Physics Division, Lawrence Berkeley National Laboratory, University of California, Berkeley, California 94720 and Department of Physics, University of California, Berkeley, California 94720, USA
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Woods DM, Border PM, Ciampa DP, Guglielmo G, Heller KJ, Wallace NB, Johns KA, Gao YT, Longo MJ, Rameika R. Polarization of Xi - and Omega - hyperons produced from neutral beams. Int J Clin Exp Med 1996; 54:6610-6619. [PMID: 10020670 DOI: 10.1103/physrevd.54.6610] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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Félix J, Avilez C, Moreno G, Hartouni EP, Jensen DA, Kreisler MN, Uribe J, Christian DC, Gutierrez G, Holmes SD, Wehmann A, Church MD, Gottschalk EE, Knapp BC, Stern BJ, Wiencke LR, Forbush M, Huson FR, White JT. Study of Lambda 0 polarization in pp-->p Lambda 0K+ pi + pi - pi + pi - at 27.5 GeV. PHYSICAL REVIEW LETTERS 1996; 76:22-25. [PMID: 10060424 DOI: 10.1103/physrevlett.76.22] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
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Troshin SM, Tyurin NE. Spin content of constituent quarks and one-spin asymmetries in inclusive processes. Int J Clin Exp Med 1995; 52:3862-3871. [PMID: 10019613 DOI: 10.1103/physrevd.52.3862] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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Morelos A, Albuquerque IF, Bondar NF, Carrigan R, Chen D, Cooper PS, Lisheng D, Denisov AS, Dobrovolsky AV, Dubbs T, Endler AM, Escobar CO, Foucher M, Golovtsov VL, Gottschalk H, Gouffon P, Grachev VT, Khanzadeev AV, Kubantsev MA, Kuropatkin NP, Lach J, Lang P, Lebedenko VN, Li C, Li Y, Luksys M, Mahon JR, McCliment E, Newsom C, Samsonov VM, Schegelsky VA, Shi H, Smith VJ, Fukun T, Terentyev NK, Timm S, Tkatch II, Uvarov LN, Vorobyov AA, Yan J, Wenheng Z, Zheng S, Zhong Y. pt and xF dependence of the polarization of Sigma + hyperons produced by 800 GeV/c protons. Int J Clin Exp Med 1995; 52:3777-3780. [PMID: 10019602 DOI: 10.1103/physrevd.52.3777] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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Dubbs T, Albuquerque IF, Bondar NF, Carrigan R, Chen D, Cooper PS, Lisheng D, Denisov AS, Dobrovolsky AV, Endler AM, Escobar CO, Foucher M, Golovtsov VL, Gottschalk H, Gouffon P, Grachev VT, Khanzadeev AV, Kubantsev MA, Kuropatkin NP, Lach J, Pengfei L, Chengze L, Yunshan L, Luksys M, Mahon JR, McCliment E, Morelos A, Newsom C, Samsonov VM, Schegelsky VA, Huanzhang S, Smith VJ, Fukun T, Terentyev NK, Timm S, Tkatch II, Uvarov LN, Vorobyov AA, Jie Y, Wenheng Z, Shuchen Z, Yuanyuan Z. Measurement of the branching ratio for the Xi ---> Sigma - gamma radiative decay. PHYSICAL REVIEW LETTERS 1994; 72:808-811. [PMID: 10056540 DOI: 10.1103/physrevlett.72.808] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
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Morelos A, Albuquerque IF, Bondar NF, Carrigan RA, Chen D, Cooper PS, Dai L, Denisov AS, Dobrovolsky AV, Dubbs T, Endler AM, Escobar CO, Foucher M, Golovtsov VL, Gottschalk H, Gouffon P, Grachev VT, Khanzadeev AV, Kubantsev MA, Kuropatkin NP, Lach J, Lang P, Li C, Li Y, Luksys M, Mahon JR, McCliment E, Newsom C, Samsonov VM, Schegelsky VA, Shi H, Smith VJ, Tang F, Terentyev NK, Timm S, Tkatch II, Uvarov LN, Vorobyov AA, Yan J, Zhao W, Zheng S, Zhong Y. Polarization of Sigma + and Sigma -bar- hyperons produced by 800-GeV/c protons. PHYSICAL REVIEW LETTERS 1993; 71:2172-2175. [PMID: 10054606 DOI: 10.1103/physrevlett.71.2172] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
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Luk KB, James C, Rameika R, Diehl HT, Teige S, Thomson GB, Zou Y, Ho PM, Longo MJ, Nguyen A, Duryea J, Guglielmo G, Heller K, Johns K, Thorne K. Polarization of Omega - hyperons produced in 800 GeV proton-beryllium collisions. PHYSICAL REVIEW LETTERS 1993; 70:900-903. [PMID: 10054233 DOI: 10.1103/physrevlett.70.900] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
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Duryea J, Guglielmo G, Heller K, Johns K, Shupe M, Thorne K, James C, Luk KB, Rameika R, Ho PM, Longo MJ, Diehl HT, Teige S, Thomson GB. Precise measurement of the Xi - magnetic moment. PHYSICAL REVIEW LETTERS 1992; 68:768-771. [PMID: 10045988 DOI: 10.1103/physrevlett.68.768] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
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