BEAUTIFUL BARYONS FROM LATTICE QCD

被引：14

作者：

ALEXANDROU, C

BORRELLI, A

GUSKEN, S

JEGERLEHNER, F

SCHILLING, K

SIEGERT, G

SOMMER, R

机构：

[1] PAUL SCHERRER INST, CH-5232 VILLIGEN, SWITZERLAND

[2] UNIV WUPPERTAL, DEPT PHYS, D-42097 WUPPERTAL, GERMANY

[3] CERN, DIV THEORY, CH-1211 GENEVA 23, SWITZERLAND

来源：

PHYSICS LETTERS B | 1994年 / 337卷 / 3-4期

关键词：

D O I：

10.1016/0370-2693(94)90985-7

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We perform a lattice study of heavy baryons, containing one (LAMBDA(b)) or two b-quarks (xi(b)). Using the quenched approximation we obtain for the mass of (LAMBDA(b), M(LAMBDA(b) = 5.728 +/- 0.144 +/- 0.018 GeV. The mass splitting between the LAMBDA(b) and the B-meson is found to increase by about 20% if the light quark mass is varied from the chiral limit to the strange quark mass.

引用

页码：340 / 346

页数：7

共 13 条

[1] 1ST OBSERVATION OF THE BEAUTY BARYON-LAMBDA-B IN THE DECAY CHANNEL LAMBDA-B-]J/PSI-LAMBDA AT THE CERN PROTON-ANTIPROTON COLLIDER [J].

ALBAJAR, C ;

ALBROW, MG ;

ALLKOFER, OC ;

ANKOVIAK, K ;

APSIMON, R ;

AUBERT, B ;

BACCI, C ;

BARTHA, S ;

BAUER, G ;

BETTINI, A ;

BEZAGUET, A ;

BIDDULPH, P ;

BOHN, H ;

BOHRER, A ;

BONINO, R ;

BOS, K ;

BOTLO, M ;

BROCKHAUSEN, D ;

BUCHANAN, C ;

BUSCHBECK, B ;

BUSETTO, G ;

CANER, A ;

CASOLI, P ;

CASTILLAVALDEZ, H ;

CAVANNA, F ;

CENNINI, P ;

CENTRO, S ;

CERADINI, F ;

CIAPETTI, G ;

CITTOLIN, S ;

CLAYTON, E ;

CLINE, D ;

COLAS, J ;

CONTE, R ;

COUGHLAN, JA ;

DAU, D ;

DAUM, C ;

DELLANEGRA, M ;

DEMOULIN, M ;

DENEGRI, D ;

DIBON, H ;

DICIACCIO, A ;

HEDO, FJD ;

DOBRZYNSKI, L ;

DORENBOSCH, J ;

DOWELL, JD ;

DRIJARD, D ;

EGGERT, K ;

EISENHANDLER, E ;

ELLIS, N .

PHYSICS LETTERS B, 1991, 273 (04) :540-548

[2] THE STATIC APPROXIMATION OF HEAVY-LIGHT QUARK SYSTEMS - A DETAILED LATTICE STUDY [J].

ALEXANDROU, C ;

GUSKEN, S ;

JEGERLEHNER, F ;

SCHILLING, K ;

SOMMER, R .

NUCLEAR PHYSICS B, 1994, 414 (03) :815-855

[3] THE LEPTONIC DECAY CONSTANTS OF (Q)OVER-BAR-Q MESONS AND THE LATTICE RESOLUTION [J].

ALEXANDROU, C ;

GUSKEN, S ;

JEGERLEHNER, F ;

SCHILLING, K ;

SIEGERT, G ;

SOMMER, R .

ZEITSCHRIFT FUR PHYSIK C-PARTICLES AND FIELDS, 1994, 62 (04) :659-668

[4]

BATTAGLIA M, 1994, DELPHI9430PHYS363 NO

[5] HEAVY-LIGHT AND LIGHT-LIGHT WEAK MATRIX-ELEMENTS ON THE LATTICE [J].

BERNARD, CW .

NUCLEAR PHYSICS B, 1994, :47-62

[6] HEAVY-QUARK SPECTROSCOPY ON THE LATTICE [J].

BOCHICCHIO, M ;

MARTINELLI, G ;

ALLTON, CR ;

SACHRAJDA, CT ;

CARPENTER, DB .

NUCLEAR PHYSICS B, 1992, 372 (1-2) :403-417

[7]

BUTLER F, 1994, IBM HEPLAT9405003 RE

[8]

COLLINS S, 1993, NUCL PHYS B, P393

[9] HEAVY-LIGHT WAVE-FUNCTIONS IN LATTICE QCD [J].

DUNCAN, A ;

EICHTEN, E ;

THACKER, H .

NUCLEAR PHYSICS B, 1993, :441-444

[10]

GUSKEN S, 1990, NUCL PHYS B S, V17, P3612

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