PHYSICAL REVIEW C, VOLUME 70, NUMBER 6 Selected Abstracts from Other Physical Review Journals Abstracts of papers which are published in other Physical Review journals and may be of interest to Physical Review C readers are printed here. The Editors of Physical Review C routinely scan the abstracts of Physical Review D papers. Appropriate abstracts of papers in other Physical Review journals may be included upon request. ␪ ¿ ϭ ⌶ -- High statistics search for the „1.54… pentaquark state. M. J. I study the very recently discovered S -2 resonance (1886) Longo,8 R. A. Burnstein,5 A. Chakravorty,5 Y. C. Chen,1 W. S. by the NA49 Collaboration at the CERN SPS. I find that repulsion Choong,2,7 K. Clark,9 E. C. Dukes,10 C. Durandet,10 J. Felix,4 Y. excludes the ⌶ -- as a ddssus-wave pentaquark. I explore the ⌶ -- Fu,7 G. Gidal,7 H. R. Gustafson,8 T. Holmstrom,10 M. Huang,10 as a heptaquark, equivalent to a NϩKϩK linear molecule, with C. James,3 C. M. Jenkins,9 T. Jones,7 D. M. Kaplan,5 L. M. positive parity and total isospin Iϭ3/2. I find that the kaon-kaon Lederman,5 N. Leros,6 F. Lopez,8 L. C. Lu,10 W. Luebke,5 K. B. repulsion is canceled by the attraction existing in the kaon-nucleon Luk,2,7 K. S. Nelson,10 H. K. Park,8 J.-P. Perroud,6 D. Rajaram,5 channels. In our framework this state is easier to bind than the ⌰ ϩ H. A. Rubin,5 J. Volk,3 C. G. White,5 S. White,5 and P. described by a ␲ϩKϩN Borromean bound state. The remaining Zyla,71Institute of Physics, Academia Sinica, Taipei 11529, Tai- Iϭ1/2 doublet and Iϭ1 triplet of the exotic antidecuplet are also wan, Republic of China, 2University of California, Berkeley, Cali- studied, and the coupling to p-wave decay channels is briefly ad- fornia 94720, USA, 3Fermi National Accelerator Laboratory, Bata- dressed. ͓Phys. Rev. D 70, 111504 ͑2004͔͒ via, Illinois 60510, USA, 4Universidad de Guanajuato, 37000 Leo´n, Mexico, 5Illinois Institute of Technology, Chicago, Illinois 60616, USA, 6Universite´ de Lausanne, CH-1015 Lausanne, Switzerland, 7Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA, 8University of Michigan, Ann Arbor, Michigan 48109, USA, 9University of South Alabama, Mobile, Ala- bama 36688, USA, 10University of Virginia, Charlottesville, Vir- ginia 22904, USA. ͑Received 8 October 2004; published 1 Decem- Strange quark asymmetry in the nucleon and the NuTeV ber 2004͒ anomaly. J. Alwall1 and G. Ingelman,1,2 1High Energy Physics, Uppsala University, Box 535, S-75121 Uppsala, Sweden, We have searched for ␪ ϩ(1.54)→K0p decays using data from 2Deutsches Elektronen-Synchrotron DESY, D-22603 Hamburg, Ger- the 1999 run of the HyperCP experiment at Fermilab. We see no ͑ ͒ 0 many. Received 25 August 2004; published 17 December 2004 evidence for a narrow peak in the K Sp mass distribution near 0 1.54 GeV/c among 106 000 K Sp candidates, and obtain an upper The NuTeV anomaly of a nonuniversal value of the fundamental ␪ ϩ 0 Ͻ 2␪ limit for the fraction of (1.54) to K Sp candidates of 0.3% at parameter sin W in the electroweak theory has been interpreted as 90% confidence. ͓Phys. Rev. D 70, 111101 ͑2004͔͒ an indication for new physics beyond the standard model. However, the observed quantity depends on a possible asymmetry in the mo- mentum distributions of strange quarks and antiquarks in the nucleon. This asymmetry occurs naturally in a phenomenologically Pseudoscalar meson mass to two loops in three-flavor partially successful physical model for such parton distributions, which re- quenched chiral perturbation theory. Johan Bijnens,1 Niclas duces the NuTeV result to only about 2 standard deviations from the Danielsson,1,2 and Timo A. La¨hde,11Department of Theoretical standard model. ͓Phys. Rev. D 70, 111505 ͑2004͔͒ Physics, Lund University, So¨lvegatan 14A, S 223 62 Lund, Sweden, 2Division of Mathematical Physics, LTH, Lund University, Box 118, S 221 00 Lund, Sweden. ͑Received 11 June 2004; pub- lished 13 December 2004͒ This paper presents a first study of the pseudoscalar meson masses to two loops, or next-to-next-to-leading order, within the Propagators of light scalar mesons. N. N. Achasov and A. V. supersymmetric formulation of partially quenched chiral perturba- Kiselev Laboratory of Theoretical Physics, Sobolev Institute for ͑ tion theory ͑PQ␹PT͒. The expression for the pseudoscalar meson Mathematics, Novosibirsk, 630090, Russia. Received 1 September ͒ mass in the case of three valence and three sea quarks with equal 2004; published 17 December 2004 6 masses, but different from each other, is given to O(p ), along with For the first time, as far as we know, in field theory are found ͓ ͑ ͔͒ a numerical analysis. Phys. Rev. D 70, 111503 2004 explicit forms of propagators satisfying the Ka¨llen-Lehmann repre- sentation. To be exact, it is shown that scalar meson propagators, taking into account a virtual intermediate state contribution to the resonance self-energy, satisfy the Ka¨llen-Lehmann representation in ⌶ -- Antidecuplet candidate „1862… as a heptaquark with the the wide domain of coupling constants of the light scalar mesons overlap of two antikaons and a nucleon. P. Bicudo, Dep. Fı´sica with the two-particle states. It is proposed to use these propagators and CFIF, Instituto Superior Te´cnico, Av. Rovisco Pais, 1049-001 in routine fitting data about light scalar mesons to reveal physics Lisboa, Portugal. ͑Received 10 March 2004 revised 29 July underlying the light scalar mesons. ͓Phys. Rev. D 70, 111901 2004; published 14 December 2004͒ ͑2004͔͒ i SELECTED ABSTRACTS PHYSICAL REVIEW C 70 ͑6͒͑DECEMBER 2004͒ Enhanced solar antineutrino flux in random magnetic fields. O. various combinations of data. We also briefly discuss how future G. Miranda,1 T. I. Rashba,2,3 A. I. Rez,2,3 and J. W. F. Valle,2 neutrino data ͑both oscillatory and nonoscillatory͒ can further probe 1Departamento de F´ısica, Centro de Investigacio´n y de Estudios the currently allowed regions. ͓Phys. Rev. D 70, 113003 ͑2004͔͒ Avanzados del IPN, Apdo. Postal 14-740 07000 Mexico, DF, Mexico, 2Instituto de F´ısica Corpuscular—C.S.I.C., Universitat de Vale`ncia Edificio Institutos, Apt. 22085, E-46071 Vale`ncia, Determination of ␪ in long-baseline neutrino oscillation ex- 3 23 Spain, Institute of Terrestrial Magnetism, Ionosphere and Radio periments with three-flavor mixing effects. Hisakazu Minakata Wave Propagation of the Russian Academy of Sciences, 142190, Masashi Sonoyama, Department of Physics, Tokyo Metropolitan ͑ Troitsk, Moscow region, Russia. Received 9 June 2004; published University, Hachioji, Tokyo 192-0397, Japan Hiroaki Sugiyama ͒ 1 December 2004 Theory Group, KEK, Tsukuba, Ibaraki 305-0801, Japan. ͑Received 8 June 2004 20 October 2004; published 23 December 2004͒ We discuss the impact of the recent KamLAND constraint on the solar antineutrino flux on the analysis of solar neutrino data in the ␪ We examine the accuracy of 23 determination in future long- presence of Majorana neutrino transition magnetic moments and baseline ͑LBL͒ ␯ ␮ disappearance experiments in the three-flavor solar magnetic fields. We consider different stationary solar mag- 2 ␪ mixing scheme of neutrinos. Despite that the error of sin 2 23 is netic field models, both regular and random, highlighting the strong indeed a few percent level at around the maximal mixing, we show enhancement in the antineutrino production rates that characterize 2 ␦ 2 2 Ӎ that the error of physics variable s 23 is large, (s 23)/s23 10-20%, turbulent solar magnetic field models. Moreover, we show that for ␪ depending upon regions of 23. The errors are severely affected by such magnetic fields inside the Sun, one can constrain the intrinsic the octant degeneracy of ␪ , and ␦(s 2 ) is largely amplified by the ␮ Շ 23 23 neutrino magnetic moment down to the level of ␯ few Jacobian factor relating these two variables in a region near the ϫ -12␮ 10 B irrespective of details of the underlying turbulence maximal mixing. The errors are also affected by the uncertainty due model. This limit is more stringent than all current experimental ␪ ␦ 2 to the unknown value of 13; (s 23) is doubled at off maximal in sensitivities, and similar to the most stringent bounds obtained from ␪ the second octant of 23 where the effect is largest. To overcome stellar cooling. We also comment on the robustness of this limit and ␯ this problem, we discuss combined analysis with e appearance show that at most it might be weakened by 1 order of magnitude, measurement in LBL experiments, or with reactor measurement of ͓ under very unlikely circumstances. Phys. Rev. D 70, 113002 ␪ . For possible relevance of subleading effects even in the next ͑ ͔͒ 13 2004 . generation LBL experiments, we give a self-contained derivation of 2 the survival probability to the next to leading order in s 13 and ⌬ 2 ⌬ 2 ͓ ͑ ͔͒ m 21/ m31. Phys. Rev. D 70, 113012 2004 Observables sensitive to absolute neutrino masses: Constraints and correlations from world neutrino data. G. L. Fogli,1 E. Critique of the angular momentum sum rules and a new angu- Lisi,1 A. Marrone,1 A. Melchiorri,2 A. Palazzo,1 P. Serra,2 lar momentum sum rule. B. L. G. Bakker,1 E. Leader,2 and T. and J. Silk,31Dipartimento di Fisica and Sezione INFN di Bari, L. Trueman,31Department of Physics and Astronomy, Vrije Univer- Via Amendola 173, 70126, Bari, Italy, 2Dipartimento di Fisica and siteit, Amsterdam, 2Imperial College London, SW7 2BW, United Sezione INFN, Universita` degli Studi di Roma ‘‘La Sapienza’’, P.le Kingdom, 3Physics Department, Brookhaven National Laboratory, Aldo Moro 5, 00185, Rome, Italy, 3Astrophysics, Denys Wilkinson Upton, New York 11973, USA.