Chiral SU(3) Symmetry and Strangeness

In this talk we review recent progress on the systematic evaluation of the kaon and antikaon spectral functions in dense nuclear matter based on a chiral SU(3) description of the low-energy pion-, kaon- and antikaon-nucleon scattering data.Comment: 9 pages, 4 figures, invited talk given by M.F.M.L. at the SQM2001 conferenc

Measurement of the spectral function for the τ- →k-KSντ decay

open238siThe decay tau(-) -> K- K(S)v(tau) has been studied using 430 x 10(6) e(+) e(-) -> tau(+) tau(-) events produced at a center-of-mass energy around 10.6 GeV at the PEP-II collider and studied with the BABAR detector. The mass spectrum of the K- K-S system has been measured and the spectral function has been obtained. The measured branching fraction B(tau(-) -> K- K(S)v(tau)) = (0.739 +/- 0.011 (stat) +/- 0.020 (syst)) x 10(-3) is found to be in agreement with earlier measurements.openLees, J.P.; Poireau, V.; Tisserand, V.; Grauges, E.; Palano, A.; Eigen, G.; Brown, D.N.; Kolomensky, Yu.G.; Fritsch, M.; Koch, H.; Schroeder, T.; Hearty, C.; Mattison, T.S.; McKenna, J.A.; So, R.Y.; Blinov, V.E.; Buzykaev, A.R.; Druzhinin, V.P.; Golubev, V.B.; Kozyrev, E.A.; Kravchenko, E.A.; Onuchin, A.P.; Serednyakov, S.I.; Skovpen, Yu.I.; Solodov, E.P.; Todyshev, K.Yu.; Lankford, A.J.; Gary, J.W.; Long, O.; Eisner, A.M.; Lockman, W.S.; Panduro Vazquez, W.; Chao, D.S.; Cheng, C.H.; Echenard, B.; Flood, K.T.; Hitlin, D.G.; Kim, J.; Li, Y.; Miyashita, T.S.; Ongmongkolkul, P.; Porter, F.C.; Röhrken, M.; Huard, Z.; Meadows, B.T.; Pushpawela, B.G.; Sokoloff, M.D.; Sun, L.; Smith, J.G.; Wagner, S.R.; Bernard, D.; Verderi, M.; Bettoni, D.; Bozzi, C.; Calabrese, R.; Cibinetto, G.; Fioravanti, E.; Garzia, I.; Luppi, E.; Santoro, V.; Calcaterra, A.; De Sangro, R.; Finocchiaro, G.; Martellotti, S.; Patteri, P.; Peruzzi, I.M.; Piccolo, M.; Rotondo, M.; Zallo, A.; Passaggio, S.; Patrignani, C.; Lacker, H.M.; Bhuyan, B.; Mallik, U.; Chen, C.; Cochran, J.; Prell, S.; Gritsan, A.V.; Arnaud, N.; Davier, M.; Le Diberder, F.; Lutz, A.M.; Wormser, G.; Lange, D.J.; Wright, D.M.; Coleman, J.P.; Gabathuler, E.; Hutchcroft, D.E.; Payne, D.J.; Touramanis, C.; Bevan, A.J.; Di Lodovico, F.; Sacco, R.; Cowan, G.; Banerjee, Sw.; Brown, D.N.; Davis, C.L.; Denig, A.G.; Gradl, W.; Griessinger, K.; Hafner, A.; Schubert, K.R.; Barlow, R.J.; Lafferty, G.D.; Cenci, R.; Jawahery, A.; Roberts, D.A.; Cowan, R.; Robertson, S.H.; Seddon, R.M.; Dey, B.; Neri, N.; Palombo, F.; Cheaib, R.; Cremaldi, L.; Godang, R.; Summers, D.J.; Taras, P.; De Nardo, G.; Sciacca, C.; Raven, G.; Jessop, C.P.; Losecco, J.M.; Honscheid, K.; Kass, R.; Gaz, A.; Margoni, M.; Posocco, M.; Simi, G.; Simonetto, F.; Stroili, R.; Akar, S.; Ben-Haim, E.; Bomben, M.; Bonneaud, G.R.; Calderini, G.; Chauveau, J.; Marchiori, G.; Ocariz, J.; Biasini, M.; Manoni, E.; Rossi, A.; Batignani, G.; Bettarini, S.; Carpinelli, M.; Casarosa, G.; Chrzaszcz, M.; Forti, F.; Giorgi, M.A.; Lusiani, A.; Oberhof, B.; Paoloni, E.; Rama, M.; Rizzo, G.; Walsh, J.J.; Zani, L.; Smith, A.J.S.; Anulli, F.; Faccini, R.; Ferrarotto, F.; Ferroni, F.; Pilloni, A.; Piredda, G.; Bünger, C.; Dittrich, S.; Grünberg, O.; Heß, M.; Leddig, T.; Voß, C.; Waldi, R.; Adye, T.; Wilson, F.F.; Emery, S.; Vasseur, G.; Aston, D.; Cartaro, C.; Convery, M.R.; Dorfan, J.; Dunwoodie, W.; Ebert, M.; Field, R.C.; Fulsom, B.G.; Graham, M.T.; Hast, C.; Innes, W.R.; Kim, P.; Leith, D.W.G.S.; Luitz, S.; Macfarlane, D.B.; Muller, D.R.; Neal, H.; Ratcliff, B.N.; Roodman, A.; Sullivan, M.K.; Va'Vra, J.; Wisniewski, W.J.; Purohit, M.V.; Wilson, J.R.; Randle-Conde, A.; Sekula, S.J.; Ahmed, H.; Bellis, M.; Burchat, P.R.; Puccio, E.M.T.; Alam, M.S.; Ernst, J.A.; Gorodeisky, R.; Guttman, N.; Peimer, D.R.; Soffer, A.; Spanier, S.M.; Ritchie, J.L.; Schwitters, R.F.; Izen, J.M.; Lou, X.C.; Bianchi, F.; De Mori, F.; Filippi, A.; Gamba, D.; Lanceri, L.; Vitale, L.; Martinez-Vidal, F.; Oyanguren, A.; Albert, J.; Beaulieu, A.; Bernlochner, F.U.; King, G.J.; Kowalewski, R.; Lueck, T.; Nugent, I.M.; Roney, J.M.; Sobie, R.J.; Tasneem, N.; Gershon, T.J.; Harrison, P.F.; Latham, T.E.; Prepost, R.; Wu, S.L.Lees, J. P.; Poireau, V.; Tisserand, V.; Grauges, E.; Palano, A.; Eigen, G.; Brown, D. N.; Kolomensky, Yu. G.; Fritsch, M.; Koch, H.; Schroeder, T.; Hearty, C.; Mattison, T. S.; Mckenna, J. A.; So, R. Y.; Blinov, V. E.; Buzykaev, A. R.; Druzhinin, V. P.; Golubev, V. B.; Kozyrev, E. A.; Kravchenko, E. A.; Onuchin, A. P.; Serednyakov, S. I.; Skovpen, Yu. I.; Solodov, E. P.; Todyshev, K. Yu.; Lankford, A. J.; Gary, J. W.; Long, O.; Eisner, A. M.; Lockman, W. S.; Panduro Vazquez, W.; Chao, D. S.; Cheng, C. H.; Echenard, B.; Flood, K. T.; Hitlin, D. G.; Kim, J.; Li, Y.; Miyashita, T. S.; Ongmongkolkul, P.; Porter, F. C.; Röhrken, M.; Huard, Z.; Meadows, B. T.; Pushpawela, B. G.; Sokoloff, M. D.; Sun, L.; Smith, J. G.; Wagner, S. R.; Bernard, D.; Verderi, M.; Bettoni, D.; Bozzi, C.; Calabrese, R.; Cibinetto, G.; Fioravanti, E.; Garzia, I.; Luppi, E.; Santoro, V.; Calcaterra, A.; De Sangro, R.; Finocchiaro, G.; Martellotti, S.; Patteri, P.; Peruzzi, I. M.; Piccolo, M.; Rotondo, M.; Zallo, A.; Passaggio, S.; Patrignani, C.; Lacker, H. M.; Bhuyan, B.; Mallik, U.; Chen, C.; Cochran, J.; Prell, S.; Gritsan, A. V.; Arnaud, N.; Davier, M.; Le Diberder, F.; Lutz, A. M.; Wormser, G.; Lange, D. J.; Wright, D. M.; Coleman, J. P.; Gabathuler, E.; Hutchcroft, D. E.; Payne, D. J.; Touramanis, C.; Bevan, A. J.; Di Lodovico, F.; Sacco, R.; Cowan, G.; Banerjee, Sw.; Brown, D. N.; Davis, C. L.; Denig, A. G.; Gradl, W.; Griessinger, K.; Hafner, A.; Schubert, K. R.; Barlow, R. J.; Lafferty, G. D.; Cenci, R.; Jawahery, A.; Roberts, D. A.; Cowan, R.; Robertson, S. H.; Seddon, R. M.; Dey, B.; Neri, N.; Palombo, F.; Cheaib, R.; Cremaldi, L.; Godang, R.; Summers, D. J.; Taras, P.; De Nardo, G.; Sciacca, C.; Raven, G.; Jessop, C. P.; Losecco, J. M.; Honscheid, K.; Kass, R.; Gaz, A.; Margoni, M.; Posocco, M.; Simi, G.; Simonetto, F.; Stroili, R.; Akar, S.; Ben-Haim, E.; Bomben, M.; Bonneaud, G. R.; Calderini, G.; Chauveau, J.; Marchiori, G.; Ocariz, J.; Biasini, M.; Manoni, E.; Rossi, A.; Batignani, G.; Bettarini, S.; Carpinelli, M.; Casarosa, G.; Chrzaszcz, M.; Forti, F.; Giorgi, M. A.; Lusiani, A.; Oberhof, B.; Paoloni, E.; Rama, M.; Rizzo, G.; Walsh, J. J.; Zani, L.; Smith, A. J. S.; Anulli, F.; Faccini, R.; Ferrarotto, F.; Ferroni, F.; Pilloni, A.; Piredda, G.; Bünger, C.; Dittrich, S.; Grünberg, O.; Heß, M.; Leddig, T.; Voß, C.; Waldi, R.; Adye, T.; Wilson, F. F.; Emery, S.; Vasseur, G.; Aston, D.; Cartaro, C.; Convery, M. R.; Dorfan, J.; Dunwoodie, W.; Ebert, M.; Field, R. C.; Fulsom, B. G.; Graham, M. T.; Hast, C.; Innes, W. R.; Kim, P.; Leith, D. W. G. S.; Luitz, S.; Macfarlane, D. B.; Muller, D. R.; Neal, H.; Ratcliff, B. N.; Roodman, A.; Sullivan, M. K.; Va'Vra, J.; Wisniewski, W. J.; Purohit, M. V.; Wilson, J. R.; Randle-Conde, A.; Sekula, S. J.; Ahmed, H.; Bellis, M.; Burchat, P. R.; Puccio, E. M. T.; Alam, M. S.; Ernst, J. A.; Gorodeisky, R.; Guttman, N.; Peimer, D. R.; Soffer, A.; Spanier, S. M.; Ritchie, J. L.; Schwitters, R. F.; Izen, J. M.; Lou, X. C.; Bianchi, F.; De Mori, F.; Filippi, A.; Gamba, D.; Lanceri, L.; Vitale, L.; Martinez-Vidal, F.; Oyanguren, A.; Albert, J.; Beaulieu, A.; Bernlochner, F. U.; King, G. J.; Kowalewski, R.; Lueck, T.; Nugent, I. M.; Roney, J. M.; Sobie, R. J.; Tasneem, N.; Gershon, T. J.; Harrison, P. F.; Latham, T. E.; Prepost, R.; Wu, S. L

Kaon and antikaon properties in cold nuclear medium

We present results of a self-consistent calculation for the kaon and antikaon spectral functions in cold nuclear matter, using as input the kaon-nucleon and antikaon-nucleon scattering amplitudes of the vacuum. We investigate the effect of in-medium pion dressing on the antikaon-nucleon scattering amplitudes and antikaon spectral function. We find the influence of pion dressing to be minor on the antikaon spectral function and limited on the hyperon resonances causing only a small additional broadening. An exception is the \Sigma(1690). At nuclear saturation density an attractive mass shift of about 20 MeV and width of about 130 MeV is obtained. The kaon shows a repulsive mass increase of 36 MeV and a small width of the quasiparticle peak at saturation density.Comment: 8 pages, 4 figures, submitted to Heavy Ion Physic

Self-consistent antikaon dynamics in isospin-asymmetric nuclear medium

We investigate properties of antikaons and hyperon resonances in isospin-asymmetric nuclear medium, using a self-consistent, covariant scheme based on vacuum antikaon-nucleon scattering amplitude.Comment: 9 pages, 5 figures, uses budapest.sty (included);to be published in the Proceedings of the Budapest'2002 Workshop on Quark and Hadron Dynamics, Budapest, Hungary, 3-7 March 200

London, British Library, Cotton Tiberius B. i: OE Orosius; "Menologium," "Maxims II," Anglo-Saxon

227. London, British Library, Cotton Tiberius B. i OE Orosius; "Menologium," "Maxims II," Anglo-Saxon Chronicle (C-text) [Ker 191, Gneuss 370] HISTORY: The manuscript is a composite. Ker dates Part 1 (ff. 3-111 containing the Orosius [Bately's siglum C]) to "s. xi1 " and Part 2 (the verse texts and the C-text of the Anglo-Saxon Chronicle) to s. "xi2 ." The ascription of an Abingdon provenance for the C-text of the Chronicle is owing mostly to tradition and is difficult to sustain (O'Brien O'Keeffe 2001: lxxiv-xcii). In the early modem period the manuscript was known or used by a number of antiquarians. Robert Recorde (d. 1558) made extracts from the Chronicle, probably while it was in the possession of Robert Talbot, prebendary of Norwich (d. 1558) (Wright 1937: 170-71; Graham 1997); in the upper margin of f. 3, Talbot has written 'Rex Alfred<us> Orosiu<m> interp<re>tat<us> <est> Boetiu<m> <et> Beda<m> de histo<ria> eccl<esi>astica.' Talbot underlined names in Tiberius B. i and made marginal notations throughout.John Leland ( d. 1552) copied Talbot's inscription, his underlined Anglo-Saxon place names, and a few of his English and Latin glosses into his own "Collectanea" (BL, Cotton Julius C. vi, ff. 99v-100v; Hearne 1774: 4.122-25). Laurence Nowell made a partial copy of the C-text in BL, Additional 43,704, ff. 94r-107v (Lutz 1982: 324-30). John J oscelyn (1529-1603) had access to Tiberius B. i, and he filled in lacunae in the C-text at the years 1055, 1065, and 1066, supplied 'Humbran' and 'mid oreom hund scypum', both in 1066, and supplied 'god man 7 cla:ne 7 swioe a:oele' to the incomplete end of 1056 C. When J oscelyn knew the manuscript, Tiberius B. i was in the possession of William Bowyer (d. 1576), keeper of the records in the Tower (BL, Cotton Nero C. iii, f. 208r). By 1621 Robert Cotton had acquired the manuscript from Robert Bowyer by exchange (see the 1621 Cotton catalogue, BL, Harley 6018, ff. 154v, 158r). Across the top margin of f. 112r Robert Cotton notes 'Cronica Saxonica Abbingdonia: ad annum 1066'. William Somner made a transcript of Tiberius B. i in the process of compiling his 1659 dictionary (now Canterbury Cathedral Library, Lit. C. 5, ff. 5-74, rectos only; for Somner's use of Tiberius B. i see Lutz 1988: 7-15)

Chiral symmetry, strangeness and resonances

We review the important role played by the chiral SU(3) symmetry in predicting the properties of antikaons and hyperon resonances in cold nuclear matter. Objects of crucial importance are the meson-baryon scattering amplitudes obtained within the chiral coupled-channel effective field theory. The formation of baryon resonances as implied by chiral coupled-channel dynamics is discussed. Results for antikaon and hyperon-resonance spectral functions are presented for isospin symmetric and asymmetric matter.Comment: invited talk presented by M.F.M.L. at the 18th Nishinomiya Yukawa Memorial Symposium, 21 pages, 12 figure

On finite volume effects in the chiral extrapolation of baryon masses

We perform an analysis of the QCD lattice data on the baryon octet and decuplet masses based on the relativistic chiral Lagrangian. The baryon self energies are computed in a finite volume at next-to-next-to-next-to leading order (N$^3$LO), where the dependence on the physical meson and baryon masses is kept. The number of free parameters is reduced significantly down to 12 by relying on large-$N_c$ sum rules. Altogether we describe accurately more than 220 data points from six different lattice groups, BMW, PACS-CS, HSC, LHPC, QCDSF-UKQCD and NPLQCD. Values for all counter terms relevant at N$^3$LO are predicted. In particular we extract a pion-nucleon sigma term of 39$_{-1}^{+2}$ MeV and a strangeness sigma term of the nucleon of $\sigma_{sN} = 84^{+ 28}_{-\;4}$ MeV. The flavour SU(3) chiral limit of the baryon octet and decuplet masses is determined with $(802 \pm 4)$ MeV and $(1103 \pm 6)$ MeV. Detailed predictions for the baryon masses as currently evaluated by the ETM lattice QCD group are made.Comment: 44 pages, 10 figures and 6 tables - the revised manuscript contains the results of additional fits at the N^2LO level - 4 additional figures show the size of finite volume corrections for each lattice point - more technical details on the evaluation of finite volume effects are give

Improved measurement of the B0 and B+ meson lifetimes

complete author list: Buskulic D.; De Bonis I.; Decamp D.; Ghez P.; Goy C.; Lees J.; Lucotte A.; Minard M.; Odier P.; Pietrzyk B.; Casado M.; Chmeissani M.; Crespo J.; Delfino M.; Efthymiopoulos I.; Fernandez E.; Fernandez-Bosman M.; Garrido L.; Juste A.; Martinez M.; Orteu S.; Pacheco A.; Padilla C.; Pascual A.; Perlas J.; Riu I.; Sanchez F.; Teubert F.; Colaleo A.; Creanza D.; De Palma M.; Gelao G.; Girone M.; Iaselli G.; Maggi G.; Maggi M.; Marinelli N.; Nuzzo S.; Ranieri A.; Raso G.; Ruggieri F.; Selvaggi G.; Silvestris L.; Tempesta P.; Zito G.; Huang X.; Lin J.; Ouyang Q.; Wang T.; Xie Y.; Xu R.; Xue S.; Zhang J.; Zhang L.; Zhao W.; Alemany R.; Bazarko A.; Bonvicini G.; Cattaneo M.; Comas P.; Coyle P.; Drevermann H.; Forty R.; Frank M.; Hagelberg R.; Harvey J.; Janot P.; Jost B.; Kneringer E.; Knobloch J.; Lehraus I.; Martin E.; Mato P.; Minten A.; Miquel R.; Mir L.; Moneta L.; Oest T.; Palla F.; Pater J.; Pusztaszeri J.; Ranjard F.; Rensing P.; Rolandi L.; Schlatter D.; Schmelling M.; Schneider O.; Tejessy W.; Tomalin I.; Venturi A.; Wachsmuth H.; Wagner A.; Wildish T.; Ajaltouni Z.; Barrès A.; Boyer C.; Falvard A.; Gay P.; Guicheney C.; Henrard P.; Jousset J.; Michel B.; Monteil S.; Montret J.; Pallin D.; Perret P.; Podlyski F.; Proriol J.; Rossignol J.; Fearnley T.; Hansen J.; Hansen J.; Hansen J.; Hansen P.; Nilsson B.; Wäänänen A.; Kyriakis A.; Markou C.; Simopoulou E.; Siotis I.; Vayaki A.; Zachariadou K.; Blondel A.; Bonneaud G.; Brient J.; Bourdon P.; Rougé A.; Rumpf M.; Valassi A.; Verderi M.; Videau H.; Candlin D.; Parsons M.; Focardi E.; Parrini G.; Corden M.; Georgiopoulos C.; Jaffe D.; Antonelli A.; Bencivenni G.; Bologna G.; Bossi F.; Campana P.; Capon G.; Casper D.; Chiarella V.; Felici G.; Laurelli P.; Mannocchi G.; Murtas F.; Murtas G.; Passalacqua L.; Pepe-Altarelli M.; Curtis L.; Dorris S.; Halley A.; Knowles J.; Lynch J.; O'Shea V.; Raine C.; Reeves P.; Scarr J.; Smith K.; Thompson A.; Thomson F.; Thorn S.; Turnbull R.; Becker U.; Geweniger C.; Graefe G.; Hanke P.; Hansper G.; Hepp V.; Kluge E.; Putzer A.; Rensch B.; Schmidt M.; Sommer J.; Stenzel H.; Tittel K.; Werner S.; Wunsch M.; Abbaneo D.; Beuselinck R.; Binnie D.; Cameron W.; Dornan P.; Moutoussi A.; Nash J.; Sedgbeer J.; Stacey A.; Williams M.; Dissertori G.; Girtler P.; Kuhn D.; Rudolph G.; Betteridge A.; Bowdery C.; Colrain P.; Crawford G.; Finch A.; Foster F.; Hughes G.; Sloan T.; Williams M.; Galla A.; Greene A.; Kleinknecht K.; Quast G.; Renk B.; Rohne E.; Sander H.; Van Gemmeren P.; Zeitnitz C.; Aubert J.; Bencheikh A.; Benchouk C.; Bonissent A.; Bujosa G.; Calvet D.; Carr J.; Diaconu C.; Etienne F.; Konstantinidis N.; Payre P.; Rousseau D.; Talby M.; Sadouki A.; Thulasidas M.; Trabelsi K.; Aleppo M.; Ragusa F.; Abt I.; Assmann R.; Bauer C.; Blum W.; Dietl H.; Dydak F.; Ganis G.; Gotzhein C.; Jakobs K.; Kroha H.; Lütjens G.; Lutz G.; Männer W.; Moser H.; Richter R.; Rosado-Schlosser A.; Schael S.; Settles R.; Seywerd H.; St. Denis R.; Wiedenmann W.; Wolf G.; Boucrot J.; Callot O.; Cordier A.; Davier M.; Duflot L.; Grivaz J.; Heusse P.; Jacquet M.; Kim D.; Le Diberder F.; Lefrançois J.; Lutz A.; Nikolic I.; Park H.; Park I.; Schune M.; Simion S.; Veillet J.; Videau I.; Azzurri P.; Bagliesi G.; Batignani G.; Bettarini S.; Bozzi C.; Calderini G.; Carpinelli M.; Ciocci M.; Ciulli V.; Dell'Orso R.; Fantechi R.; Ferrante I.; Foà L.; Forti F.; Giassi A.; Giorgi M.; Gregorio A.; Ligabue F.; Lusiani A.; Marrocchesi P.; Messineo A.; Rizzo G.; Sanguinetti G.; Sciabà A.; Spagnolo P.; Steinberger J.; Tenchini R.; Tonelli G.; Vannini C.; Verdini P.; Walsh J.; Blair G.; Bryant L.; Cerutti F.; Chambers J.; Gao Y.; Green M.; Medcalf T.; Perrodo P.; Strong J.; Von Wimmersperg-Toeller J.; Botterill D.; Clifft R.; Edgecock T.; Haywood S.; Maley P.; Norton P.; Thompson J.; Wright A.; Bloch-Devaux B.; Colas P.; Emery S.; Kozanecki W.; Lançon E.; Lemaire M.; Locci E.; Marx B.; Perez P.; Rander J.; Renardy J.; Roussarie A.; Schuller J.; Schwindling J.; Trabelsi A.; Vallage B.; Black S.; Dann J.; Johnson R.; Kim H.; Litke A.; McNeil M.; Taylor G.; Booth C.; Boswell R.; Brew C.; Cartwright S.; Combley F.; Koksal A.; Letho M.; Newton W.; Reeve J.; Thompson L.; Böhrer A.; Brandt S.; Büscher V.; Cowan G.; Grupen C.; Lutters G.; Minguet-Rodriguez J.; Rivera F.; Saraiva P.; Smolik L.; Stephan F.; Apollonio M.; Bosisio L.; Della Marina R.; Giannini G.; Gobbo B.; Musolino G.; Rothberg J.; Wasserbaech S.; Armstrong S.; Bellantoni L.; Elmer P.; Feng Z.; Ferguson D.; Gao Y.; González S.; Grahl J.; Greening T.; Harton J.; Hayes O.; Hu H.; McNamara P.; Nachtman J.; Orejudos W.; Pan Y.; Saadi Y.; Schmitt M.; Scott I.; Sharma V.; Walsh A.; Wu S.; Wu X.; Yamartino J.; Zheng M.; Zobernig G.; De Bonis I.; Buskulic D.; Zobernig G.; Zheng M.; Yamartino J.; Wu X.; Buskulic D.</p