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Heavy P-wave quarkonium production via Higgs decays

机译:通过希格斯衰变产生大量的P波石英

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The production of the heavy quarkonium, i.e., | ( c b ˉ ) [ n ] ? (or | ( b c ˉ ) [ n ] ? ), | ( c c ˉ ) [ n ] ? , and | ( b b ˉ ) [ n ] ? - quarkonium [ | ( Q Q ′ ˉ ) [ n ] ? -quarkonium for short], through Higgs H 0 boson semiexclusive decays is evaluated within the nonrelativistic quantum chromodynamics (NRQCD) framework, where [ n ] stands for the production of the two color-singlet S -wave states, | ( Q Q ′ ˉ ) [ S 1 0 ] 1 ? and | ( Q Q ′ ˉ ) [ S 3 1 ] 1 ? , the production of the four color-singlet P -wave states, i.e., | ( Q Q ′ ˉ ) [ P 1 0 ] 1 ? , | ( Q Q ′ ˉ ) [ P 3 J ] 1 ? (with J = [ 0 , 1 , 2 ] ). Moreover, according to the velocity scaling rule of the NRQCD, the production of the two color-octet components, | ( Q Q ′ ˉ ) g [ S 1 0 ] 8 ? and | ( Q Q ′ ˉ ) g [ S 3 1 ] 8 ? , are also taken into account. The “improved trace technology” to derive the simplified analytic expressions at the amplitude level is adopted, which shall be useful for dealing with these decay channels. If all higher heavy quarkonium states decay completely to the ground states, it should be obtained Γ ( H 0 → | ( c b ˉ ) [ S 1 0 ] 1 ? ) = 15.14 ? ? KeV , Γ ( H 0 → | ( c c ˉ ) [ S 1 0 ] 1 ? ) = 1.547 ? ? KeV , and Γ ( H 0 → | ( b b ˉ ) [ S 1 0 ] 1 ? ) = 1.311 ? ? KeV . The production of 5.6 × 10 5 Bc meson, 4.7 × 10 4 charmonium meson, and 4.9 × 10 4 bottomonium meson per year in Higgs decays at the HE/HL-LHC can be obtained.
机译:重质石英瓶的生产,即| (cbˉ)[n]? (或|(b cˉ)[n]?),| (c cˉ)[n]吗?和| (bbˉ)[n]? -石英[| (Q Q'ˉ)[n]? -夸克],通过希格斯H 0玻色子,在非相对论量子色动力学(NRQCD)框架内评估半排他性衰变,其中[n]代表两个单色S波态的产生。 (Q Q′ˉ)[S 1 0] 1?和(Q Q′ˉ)[S 3 1] 1? ,产生四个颜色单一的P波状态,即| (Q Q′ˉ)[P 1 0] 1? ,| (Q Q′ˉ)[P 3 J] 1? (其中J = [0,1,2])。此外,根据NRQCD的速度缩放规则,两个色八位字节分量的产生| (Q Q'ˉ)g [S 1 0] 8?和(Q Q'ˉ)g [S 3 1] 8? ,也要考虑在内。采用“改进的跟踪技术”在幅度水平上导出简化的分析表达式,这对于处理这些衰减通道将是有用的。如果所有较高的重夸克态都完全衰减到基态,则应获得Γ(H 0→|(c bˉ)[S 1 0] 1?)= 15.14? ? KeV,Γ(H 0→|(c cˉ)[S 1 0] 1?)= 1.547? ? KeV和Γ(H 0→|(b bˉ)[S 1 0] 1?)= 1.311? ?病毒在HE / HL-LHC上,希格斯衰变每年可产生5.6×10 5 Bc介子,4.7×10 4 charm介子和4.9​​×10 4介子。

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