MEASUREMENT OF R-B USING A VERTEX MASS TAG

Authors
ABE K ABE K AKAGI T ALLEN NJ ASH WW ASTON D BAIRD KG BALTAY C BAND HR BARAKAT MB BARANKO G BARDON O BARKLOW TL BASHINDZHAGYAN GL BAZARKO AO BENDAVID R BENVENUTI AC BILEI GM BISELLO D BLAYLOCK G BOGART JR BOLEN B BOLTON T BOWER GR BRAU JE BREIDENBACH M BUGG WM BURKE D BURNETT TH BURROWS PN BUSZA W CALCATERRA A CALDWELL DO CALLOWAY D CAMANZI B CARPINELLI M CASSELL R CASTALDI R CASTRO A CAVALLISFORZA M CHOU A CHURCH E COHN HO COLLER JA COOK V COTTON R COWAN RF COYNE DG CRAWFORD G DOLIVEIRA A DAMERELL CJS DAOUDI M DEGROOT N DESANGRO R DELLORSO R DERVAN PJ DIMA M DONG DN DU PYC DUBOIS R EISENSTEIN BI ELIA R ETZION E FAHEY S FALCIAI D FAN C FERNANDEZ JP FARO MJ FREY R GILLMAN T GLADDING G GONZALEZ S HART EL HARTON JL HASAN A HASEGAWA Y HASUKO K HEDGES SJ HERTZBACH SS HILDRETH MD HUBER J HUFFER ME HUGHES EW HWANG H IWASAKI Y JACKSON DJ JACQUES P JAROS JA JIANG ZY JOHNSON AS JOHNSON JR JOHNSON RA JUNK T KAJIKAWA R KALELKAR M KANG HJ KARLINER I KAWAHARA H KENDALL HW KIM YD KING ME KING R KOFLER RR KRISHNA NM KROEGER RS LABS JF LANGSTON M LATH A LAUBER JA LEITH DWGS LIA V LIU MX LIU X LORETI M LU A LYNCH HL MA J MANCINELLI G MANLY S MANTOVANI G MARKIEWICZ TW MARUYAMA T MASUDA H MAZZUCATO E MCKEMEY AK MEADOWS BT MESSNER R MOCKETT PM MOFFEIT KC MOORE TB MULLER D NAGAMINE T NARITA S NAUENBERG U NEAL H NUSSBAUM M OHNISHI Y OISHI N ONOPRIENKO D OSBORNE LS PANVINI RS PARK CH PARK H PAVEL TJ PERUZZI I PICCOLO M PIEMONTESE L PIERONI E PITTS KT PLANO RJ PREPOST R PRESCOTT CY PUNKAR GD QUIGLEY J RATCLIFF BN REEVES TW REIDY J REINERTSEN PL RENSING PE ROCHESTER LS ROWSON PC RUSSELL JJ SAXTON OH SCHALL T SCHINDLER RH SCHUMM BA SCHWIENING J SEN S SERBO VV SHAEVITZ MH SHANK JT SHAPIRO G SHERDEN DJ SHMAKOV KD SIMOPOULOS C SINEV NB SMITH SR SMY MB SNYDER JA STAENGLE H STAMER P STEINER H STEINER R STRAUSS MG SU D SUEKANE F SUGIYAMA A SUZUKI S SWARTZ M SZUMILO A TAKAHASHI T TAYLOR FE TORRENCE E TRANDAFIR AI TURK JD USHER T VAVRA J VANNINI C VELLA E VENUTI JP VERDIER R VERDINI PG WAGNER DL WAGNER SR WAITE AP WATTS SJ WEIDEMANN AW WEISS ER WHITAKER JS WHITE SL WICKENS FJ WILLIAMS DC WILLIAMS SH WILLOCQ S WILSON RJ WISNIEWSKI WJ WOODS M WORD GB WYSS J YAMAMOTO RK YAMARTINO JM YANG X YASHIMA J YELLIN SJ YOUNG CC YUTA H ZAPALAC G ZDARKO RW ZHOU J
Citation
K. Abe et al., MEASUREMENT OF R-B USING A VERTEX MASS TAG, Physical review letters, 80(4), 1998, pp. 660-665
Citations number
25
Categorie Soggetti
Physics
Journal title
Physical review letters → ACNP
ISSN journal
00319007
Volume
80
Issue
4
Year of publication
1998
Pages
660 - 665
Database
ISI
SICI code
0031-9007(1998)80:4<660:MORUAV>2.0.ZU;2-5
Abstract
We report a new measurement of R-b = Gamma(Z0-->b (b) over bar)/Gamma( Z0-->hadrons) using a double tag technique, where the b hemisphere sel ection is based on the reconstructed mass of the B hadron decay vertex . The measurement was performed using a sample of 130 x 10(3) hadronic Z(0) events, collected with the SLD detector at SLC. The method utili zes the 3D vertexing abilities of the CCD pixel vertex detector and th e small stable SLC beams to obtain a high b-tagging efficiency and pur ity. We obtain R-b = 0.2142 +/- 0.0034(stat) +/- 0.0015(syst) +/- 0.00 02(R-c). [S0031-9007(97)05018-7].