STUDY OF PI+PI- TRANSITIONS FROM THE UPSILON(3S) AND A SEARCH FOR THE HB

被引：34

作者：

BROCK, IC

FERGUSON, T

VOGEL, H

机构：

[1] Carnegie Mellon University 56, Pittsburgh

[2] Cornell University, Ithaca

[3] Ithaca College, Ithaca

[4] University of Florida, Gainesville

[5] Harvard University, Cambridge

[6] University of Maryland, College Park

[7] University of Minnesota, Minneapolis

[8] Ohio State University, Columbus

[9] Purdue University, West Lafayette

[10] State University of New York at Albany, Albany

[11] Syracuse University, Syracuse

[12] Vanderbilt University, Nashville

来源：

PHYSICAL REVIEW D | 1991年 / 43卷 / 05期

关键词：

D O I：

10.1103/PhysRevD.43.1448

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We have investigated the transitions UPSILON(3S)-->pi+pi-UPSILON(1S), UPSILON(3S)-->pi+pi-UPSILON(2S) and the cascade process UPSILON(3S)-->UPSILON(2S)+X,UPSILON(2S)-->pi+pi-UPSILON(1S), both in the exclusive decay mode, with the daughter UPSILON state decaying into two leptons, and in the inclusive decay mode, with the daughter UPSILON state decaying hadronically. Results are presented on the branching fractions and properties of the pi+pi- system. The pi+pi- invariant-mass spectra for the decays UPSILON(3S)-->pi+pi-UPSILON(1S) and UPSILON(3S)-->pi+pi-UPSILON(2S) are measured and compared with theoretical predictions. We also present the results of a search for the h(b)(1(1)P1) and UPSILON(1 3D) states in inclusive UPSILON(3S) decays, and for the exclusive decay UPSILON(3S)-->eta-UPSILON(1S).

引用

页码：1448 / 1458

页数：11

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