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Setting Limits on Supersymmetry Using Simplified Models
Published on: November 15, 2013
Probing the Three-Body Force in Hadronic Systems with Specific Charge Parity
Ya-Wen Pan1, Ming-Zhu Liu2,3, Li-Sheng Geng1,4,5,6,7
1Beihang University, School of Physics, Beijing 102206, China.
Abstract:
Three-body forces, a type of nonperturbative strong interactions, are widely studied in nuclear physics. However, whether their inclusion is necessary in nuclear systems remains a topic of intense debate. In this Letter, we propose that the existence of three-body forces in certain three-body hadronic systems with definite C parity is certain. Such systems consist of two components whose interactions are mediated by three-body forces-a mechanism not easily realized in conventional three-nucleon systems. We investigate two specific three-body hadronic systems, D[over ¯]_{s}DK and D[over ¯]^{*}Dη, using contact-range potentials. The two-body hadron-hadron interactions are constrained by reproducing their scattering lengths, while the three-body couplings are constrained by charge symmetry. Our results indicate that three-body forces play a minor role in binding the I(J^{PC})=0(0^{--})D[over ¯]_{s}DK system, but a crucial one in binding the I(J^{PC})=0(1^{-+})D[over ¯]^{*}Dη system. In fact, three-body forces determine whether D[over ¯]^{*}Dη forms a bound state, making this system a promising candidate for exploring three-body forces in hadronic physics.
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