Novel approaches to determine B± and B0 meson production fractions

被引：0
|
作者：
Bernlochner, Florian [1 ]
Jung, Martin [2 ,3 ]
Khan, Munira [1 ]
Landsberg, Greg [4 ]
Ligeti, Zoltan [5 ]
机构：
[1] Rheinische Friedrich Wilhelms Univ Bonn, Phys Inst, D-53115 Bonn, Germany
[2] Univ Torino, Dipartimento Fis, I-10125 Turin, Italy
[3] INFN, Sez Torino, I-10125 Turin, Italy
[4] Brown Univ, Dept Phys, Providence, RI 02912 USA
[5] Univ Calif Berkeley, Ernest Orlando Lawrence Berkeley Natl Lab, Berkeley, CA 94720 USA
来源：
PHYSICAL REVIEW D | 2024年 / 110卷 / 01期
关键词：
RELATIVE YIELD; DECAY; RATIO;
D O I：
10.1103/PhysRevD.110.014007
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
We propose novel methods to determine Gamma(4S) -> B+B- and Gamma(4S) -> B-0(B) over bar (0) decay rates. The precision to which they and their ratio are known yields at present a limiting uncertainty around 2% in measurements of absolute B decay rates, and thus in a variety of applications, such as precision determinations of elements of the Cabibbo-Kobayashi-Maskawa matrix and flavor-symmetry relations. The new methods we propose are based in one case on exploiting the Gamma(5S) datasets, in the other case on the different average number of charged tracks in B-perpendicular to and B-0 decays. We estimate future sensitivities using these methods and discuss possible measurements of f(d)/f(u) at the (HL-)LHC.
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页数：10
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