B* production in Z decays

6533b7d2fe1ef96bd125f847

RESEARCH PRODUCT

B* production in Z decays

P Abreu W Adam T Adye E Agasi I Ajinenko R Aleksan Gd Alekseev Pp Allport S Almehed Sj Alvsvaag U Amaldi S Amato A Andreazza Ml Andrieux P Antilogus W-d Apel Y Arnoud B ÅSman J-e Augustin A Augustinus P Baillon P Bambade F Barao R Barate Dy Bardin Gj Barker A Baroncelli O Barring Ja Barrio W Bartl Mj Bates M Battaglia M Baubillier J Baudot K-h Becks M Begalli P Beilliere Y Belokopytov Ac Benvenuti M Berggren D Bertrand F Bianchi M Bigi Ms Bilenky P Billoir D Bloch M Blume S Blyth V Bocci T Bolognese M Bonesini W Bonivento Psl Booth G Borisov C Bosio S Bosworth O Botner B Bouquet C Bourdarios Tjv Bowcock M Bozzo P Branchini Kd Brand Ra Brenner C Bricman L Brillault Rca Brown P Bruckman J-m Brunet L Bugge T Buran A Buys M Caccia M Calvi Ajc Rozas T Camporesi V Canale M Canepa K Cankocak F Cao F Carena P Carrilho L Carroll C Caso Mvc Gimenez A Cattai Fr Cavallo L Cerrito V Chabaud P Charpentier L Chaussard J Chauveau P Checchia Ga Chelkov R Chierici P Chliapnikov P Chochula V Chorowicz V Cindro P Collins Jl Contreras R Contri E Cortina G Cosme F Cossutti Hb Crawley D Crennell G Crosetti Jc Maestro S Czellar E Dahl-jensen J Dahm B Dalmagne M Dam G Damgaard A Daum Pd Dauncey M Davenport W Da Silva C Defoix Gd Ricca P Delpierre N Demaria A De Angelis H De Boeck W De Boer S De Brabandere C De Clercq C De La Vaissiere B De Lotto A De Min L De Paula C De Saint-jean H Dijkstra L Di Ciaccio F Djama J Dolbeau M Donszelmann K Doroba M Dracos J Drees Ka Drees M Dris Y Dufour F Dupont D Edsall R Ehret G Eigen T Ekelof G Ekspong M Elsing J-p Engel N Ershaidat B Erzen Me Santo E Falk D Fassouliotis M Feindt A Ferrer Ta Filippas A Firestone H Foeth E Fokitis F Fontanelli F Formenti B Franek P Frenkiel Dc Fries Ag Frodesen R Fruhwirth F Fulda-quenzer H Furstenau J Fuster A Galloni D Gamba M Gandelman C Garcia J Garcia C Gaspar U Gasparini P Gavillet En Gazis D Gele D Gele J-p Gerber L Gerdyukov M Gibbs D Gillespie R Gokieli B Golob G Gopal L Gorn M Gorski Y Gouz V Gracco E Graziani G Grosdidier P Gunnarsson M Gunther J Guy U Haedinger F Hahn M Hahn S Hahn Z Hajduk A Hallgren K Hamacher W Hao Fj Harris V Hedberg R Henriques Jj Hernandez P Herquet H Herr Tl Hessing E Higon Hj Hilke Ts Hill S-o Holmgren Pj Holt D Holthuizen M Houlden J Hrubec K Huet K Hultqvist P Ioannou Jn Jackson R Jacobsson P Jalocha R Janik G Jarlskog P Jarry B Jean-marie Ek Johansson L Jonsson P Jonsson C Joram P Juillot M Kaiser G Kalmus F Kapusta M Karlsson E Karvelas S Katsanevas Ec Katsoufis R Keranen Ba Khomenko Nn Khovanski B King Nj Kjaer H Klein A Klovning P Kluit Jh Koehne B Koene P Kokkinias M Koratzinos K Korcyl V Kostioukhine C Kourkoumelis O Kouznetsov Ph Kramer M Krammer C Kreuter J Krolikowski I Kronkvist Z Krumstein W Krupinski P Kubinec W Kucewicz K Kurvinen C Lacasta I Laktineh S Lamblot Jw Lamsa L Lanceri Dw Lane P Langefeld V Lapin I Last Jp Laugier R Lauhakangas G Leder F Ledroit V Lefebure Ck Legan R Leitner Y Lemoigne J Lemonne G Lenzen V Lepeltier T Lesiak D Liko R Lindner A Lipniacka I Lippi B Loerstad M Lokajicek Jg Loken Jm Lopez A Lopez-fernandez Mal Aguera D Loukas P Lutz L Lyons J Macnaughton G Maehlum A Maio V Malychev J Marco B Marechal M Margoni J-c Marin C Mariotti A Markou T Maron C Martinez-rivero F Martinez-vidal S Marti I Garcia F Matorras C Matteuzzi G Matthiae M Mazzucato Mm Cubbin Rm Kay Rm Nulty J Medbo C Meroni Wt Meyer M Michelotto E Migliore L Mirabito Wa Mitaroff U Mjoernmark T Moa R Moeller K Moenig Mr Monge P Morettini H Mueller Lm Mundim Wj Murray B Muryn G Myatt F Naraghi Fl Navarria S Navas P Negri S Nemecek W Neumann N Neumeister R Nicolaidou Bs Nielsen M Nieuwenhuizen V Nikolaenko P Niss A Nomerotski A Normand W Oberschulte-beckmann V Obraztsov Ag Olshevski R Orava K Osterberg A Ouraou P Paganini M Paganoni P Pages H Palka Td Papadopoulou L Pape C Parkes F Parodi A Passeri M Pegoraro L Peralta H Pernegger M Pernicka A Perrotta C Petridou A Petrolini Ht Phillips G Piana F Pierre M Pimenta S Plaszczynski O Podobrin Me Pol G Polok P Poropat V Pozdniakov M Prest P Privitera N Pukhaeva A Pullia D Radojicic S Ragazzi H Rahmani J Rames Pn Ratoff Al Read M Reale P Rebecchi Ng Redaelli M Regler D Reid Pb Renton Lk Resvanis F Richard J Richardson J Ridky G Rinaudo I Ripp A Romero I Roncagliolo P Ronchese V Ronjin L Roos Ei Rosenberg E Rosso P Roudeau T Rovelli W Ruckstuhl V Ruhlmann-kleider A Ruiz H Saarikko Y Sacquin A Sadovsky G Sajot J Salt J Sanchez M Sannino H Schneider Mae Schyns G Sciolla F Scuri Y Sedykh Am Segar A Seitz R Sekulin Rc Shellard I Siccama P Siegrist S Simonetti F Simonetto An Sisakian B Sitar Tb Skaali G Smadja N Smirnov O Smirnova Gr Smith R Sosnowski D Souza-santos T Spassov E Spiriti S Squarcia H Staeck C Stanescu S Stapnes I Stavitski K Stepaniak F Stichelbaut A Stocchi J Strauss R Strub B Stugu M Szczekowski M Szeptycka T Tabarelli Jp Tavernet O Tchikilev A Tilquin J Timmermans Lg Tkatchev T Todorov Dz Toet A Tomaradze B Tome L Tortora G Transtromer D Treille W Trischuk G Tristram A Trombini C Troncon A Tsirou M-l Turluer Ia Tyapkin M Tyndel S Tzamarias B Ueberschaer S Ueberschaer O Ullaland V Uvarov G Valenti E Vallazza C Vander Velde Gw Van Apeldoorn P Van Dam Wk Van Doninck J Van Eldik N Vassilopoulos G Vegni L Ventura W Venus F Verbeure M Verlato Ls Vertogradov D Vilanova P Vincent L Vitale E Vlasov As Vodopyanov V Vrba H Wahlen C Walck F Waldner A Wehr M Weierstall P Weilhammer Am Wetherell D Wicke Jh Wickens M Wielers Gr Wilkinson Wsc Williams M Winter M Witek G Wormser K Woschnagg K Yip O Yushchenko F Zach C Zacharatou A Zaitsev A Zalewska P Zalewski D Zavrtanik E Zevgolatakos Ni Zimin M Zito D Zontar R Zuberi Gc Zucchelli G Zumerle

subject

Particle physics Photon Physics and Astronomy (miscellaneous)Meson Electron–positron annihilation Hadron Elementary particle 01 natural sciences Nuclear physics 0103 physical sciences [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex]B meson 010306 general physics Nuclear Experiment Engineering (miscellaneous)Boson DELPHI Physics 010308 nuclear & particles physics LARGE ELECTRON POSITRON COLLIDER Isospin PARTICLE PHYSICS; LARGE ELECTRON POSITRON COLLIDER; DELPHI PARTICLE PHYSICS Física nuclear High Energy Physics::Experiment Particle Physics - Experiment

description

The decay B*→Bγ has been observed with the DELPHI detector at LEP, where the B* meson is produced in Z boson decays. The combination of inclusively reconstructed B mesons with well-measured converted photons yields a measurement of the flavour-averaged B*-B mass difference of 45.5±0.3 (stat.) ±0.8 (syst.) MeV/c2. 95% confidence level upper limits at 6 MeV/c2 are placed on both the isospin (i.e. B+-B0) and the Bs-Bud splitting of the mass difference. The production ratio of B* to B mesons in Z decays is measured to be 0.72±0.03 (stat.) ±0.06 (syst.). Limits on the production cross-section of other hypothetical excited B hadron states decaying radiatively are established. The differential B* cross section has been measured to be in good agreement with the average b fragmentation, yielding an average fractional B* energy of 〈xE〉=0.695±0.009 (stat.) ±0.013 (syst.). From the decay angular distribution the relative contribution of longitudinal B* polarisation states is measured to be σL/(σL + σT) = 0.32 ± 0.04 (stat.) ±0.03 (syst.). © 1995 Springer-Verlag.

year	journal	country	edition	language
1995-09-01

http://inspirehep.net/record/395026