Dataset Instruction

Overview

This repository contains datasets of constraints on spin-dependent exotic interactions, also referred to as the spin-dependent fifth force (SDFF), mediated by the exchange of a single boson of mass M between fermions X and Y. The fifth force refers to a new force beyond the existing four fundamental forces of nature. A SDFF is a force that depends on the spins of the involved fermions, similar to the magnetic force.

My Figure — **Figure 1:** An exotic boson carrying a fifth force that depends on the spins of the involved fermions.

The interactions are categorized into the following types:

Axial-vector/vector, axial-vector/axial-vector, vector/vector.
Pseudoscalar/scalar, pseudoscalar/pseudoscalar, scalar/scalar.
Tensor/tensor, pseudotensor/tensor, and pseudotensor/pseudotensor.

As a reference, one may consult the format of the exotic potentials presented in the RMP review: Spin-Dependent Exotic Interactions.

The repository serves as a live webpage designed to present the latest experimental results. For contributions or to include your new results, please feel free to contact Dr. Lei Cong (congllzu@gmail.com), Dr. Wei Ji (weiji001@uni-mainz.de), or Prof. Dmitry Budker (budker@uni-mainz.de).

Citation

Please cite this repository as follows: . One can copy the BibTeX file from here: BibTeX Format.

Datasets

1. $g_Ag_A$

Description: Constraints for axial-vector/axial-vector couplings ($g_Ag_A$) are presented across different interaction categories, including lepton-lepton, lepton-nucleon, and nucleon-nucleon interactions.
Data: The data are available in the folder gAgA.

2. $g_Ag_V$

Description: Constraints for vector/vector couplings ($g_Ag_V$).
Data: The data are available in the folder gAgV.

3. $g_Vg_V$

Description: Constraints for vector/vector couplings ($g_Vg_V$).
Data: The data are available in the folder gVgV.

4. $g_pg_s$

Description: Constraints for pseudoscalar/scalar couplings ($g_pg_s$).
Data: The data are available in the folder gpgs.
Ciaran O’Hare’s page: The similar dataset for $g_pg_s$ can be found here.

5. $g_pg_p$

Description: Constraints for pseudoscalar/pseudoscalar couplings ($g_pg_p$).
Data: The data are available in the folder gpgp.

6. $g_sg_s$

Description: Constraints for scalar/scalar couplings ($g_sg_s$).
Data: The data are available in the folder gsgs.

7. Tensor and Pseudotensor Interactions

Description: Constraints for tensor and pseudotensor Interactions couplings.
Data: Please find the data in Tab. IV and V of our review

8. $V_1$ Results

Data: The data are available in the folder V1.

Course

Conference Information

17.01 to 20.01, 2025, International Symposium on New Physics Beyond the Standard Model, Sanya, China
17.02 to 21.02, 2025 CAU BSM Workshop, Seoul, Korea
24.03 to 27.03, 2025Criticality and Continuous Measurements in Quantum Sensing: From Theory to Experiments
04.05 to 14.05, 2025 LULBI - Light \& ultralight BSM interactions
11.05 to 16.05, 2025, Frontiers of Quantum Metrology for New Physics Searches, Bad Honnef, Germany
26.05 to 30.05, 2025 10th International Conference on Precision Physics and Fundamental Physical Constants (FFK2025)
23.06 to 11.07, 2025 Axions in Stockholm
04.08 to 15.08, 2025 New ways to discover light new physics, Mainz, Germany
22.09 to 26.09, 2025 20th Patras Workshop on Axions, WIMPs and WISPs

Job Information

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Acknowledgement

We would like to express our gratitude to Fadeev Pavel, Wei Ji for initiating the idea of this webpage. We sincerely acknowledge Haosen Guan for collecting most of the data. We deeply appreciate Yevgeny Stadnik for supervising the work on astrophysical limits and combined limits. We also extend our heartfelt thanks to Prof. Dmitry Budker for his invaluable support and guidance.

Additionally, we would like to thank all contributors, including Peng-Shun Luo, and [You], who provided data for this repository, enabling its comprehensive and collaborative nature.