The breaking of flavor democracy in the quark sector

Harald Fritzsch; Zhi-Zhong Xing; Di Zhang

doi:10.1088/1674-1137/41/9/093104

Chinese Physics C> 2017, Vol. 41> Issue(9) : 093104 DOI: 10.1088/1674-1137/41/9/093104

The breaking of flavor democracy in the quark sector

1.
Physics Department, Ludwig Maximilians University, D-80333 Munich, Germany
2.
Institute of High Energy Physics, and School of Physical Sciences, University of Chinese Academy of Sciences, Beijing 100049, China
3.
Center for High Energy Physics, Peking University, Beijing 100080, China
4.
College of Physical Science and Technology, Central China Normal University, Wuhan 430079, China

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Abstract：
The democracy of quark flavors is a well-motivated flavor symmetry, but it must be properly broken in order to explain the observed quark mass spectrum and flavor mixing pattern. We reconstruct the texture of flavor democracy breaking and evaluate its strength in a novel way, by assuming a parallelism between the Q=+2/3 and Q=-1/3 quark sectors and using a nontrivial parametrization of the flavor mixing matrix. Some phenomenological implications of such democratic quark mass matrices, including their variations in the hierarchy basis and their evolution from the electroweak scale to a super-high energy scale, are also discussed.
- flavor democracy ,
- quark mass ,
- flavor mixing ,
- CP violation

References

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Harald Fritzsch, Zhi-Zhong Xing and Di Zhang. The breaking of flavor democracy in the quark sector[J]. Chinese Physics C, 2017, 41(9): 093104. doi: 10.1088/1674-1137/41/9/093104

Harald Fritzsch, Zhi-Zhong Xing and Di Zhang. The breaking of flavor democracy in the quark sector[J]. Chinese Physics C, 2017, 41(9): 093104. doi: 10.1088/1674-1137/41/9/093104 shu

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Received: 2017-05-04

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Supported by National Natural Science Foundation of China (11375207) and National Basic Research Program of China (2013CB834300)

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通讯作者: 陈斌, bchen63@163.com

1.
沈阳化工大学材料科学与工程学院沈阳 110142

The breaking of flavor democracy in the quark sector

Corresponding author: Di Zhang,

1. Physics Department, Ludwig Maximilians University, D-80333 Munich, Germany

2. Institute of High Energy Physics, and School of Physical Sciences, University of Chinese Academy of Sciences, Beijing 100049, China

3. Center for High Energy Physics, Peking University, Beijing 100080, China

4. College of Physical Science and Technology, Central China Normal University, Wuhan 430079, China

Received Date: 2017-05-04

Available Online: 2017-09-05

Fund Project: Supported by National Natural Science Foundation of China (11375207) and National Basic Research Program of China (2013CB834300)

Abstract: The democracy of quark flavors is a well-motivated flavor symmetry, but it must be properly broken in order to explain the observed quark mass spectrum and flavor mixing pattern. We reconstruct the texture of flavor democracy breaking and evaluate its strength in a novel way, by assuming a parallelism between the Q=+2/3 and Q=-1/3 quark sectors and using a nontrivial parametrization of the flavor mixing matrix. Some phenomenological implications of such democratic quark mass matrices, including their variations in the hierarchy basis and their evolution from the electroweak scale to a super-high energy scale, are also discussed.

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The breaking of flavor democracy in the quark sector

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通讯作者: 陈斌, bchen63@163.com

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