Study of the lineshape of the χc1(3872) state
| Parent link: | Physical Review D: particles, fields, gravitation, and cosmology Vol. 102, iss. 9.— 2020.— [092005, 20 p.] |
|---|---|
| مؤلفون مشاركون: | , |
| مؤلفون آخرون: | , , , , , , |
| الملخص: | Title screen A study of the lineshape of the χc1(3872) state is made using a data sample corresponding to an integrated luminosity of 3 fb−1 collected in pp collisions at center-of-mass energies of 7 and 8 TeV with the LHCb detector. Candidate χc1(3872) and ψ(2S) mesons from b-hadron decays are selected in the J/ψπ+π− decay mode. Describing the lineshape with a Breit-Wigner function, the mass splitting between the χc1(3872) and ψ(2S) states, Δm, and the width of the χc1(3872) state, ΓBW, are determined to be Δm=185.598±0.067±0.068 MeV,ΓBW=1.39±0.24±0.10 MeV, where the first uncertainty is statistical and the second systematic. Using a Flatté-inspired model, the mode and full width at half maximum of the lineshape are determined to be mode=3871.69+0.00+0.05−0.04−0.13 MeV,FWHM=0.22+0.07+0.11−0.06−0.13 MeV. An investigation of the analytic structure of the Flatté amplitude reveals a pole structure, which is compatible with a quasibound D0¯D*0 state but a quasivirtual state is still allowed at the level of 2 standard deviations. |
| اللغة: | الإنجليزية |
| منشور في: |
2020
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| الموضوعات: | |
| الوصول للمادة أونلاين: | https://doi.org/10.1103/PhysRevD.102.092005 |
| التنسيق: | الكتروني فصل الكتاب |
| KOHA link: | https://koha.lib.tpu.ru/cgi-bin/koha/opac-detail.pl?biblionumber=664679 |
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| 200 | 1 | |a Study of the lineshape of the χc1(3872) state |f R. Aaij, C. A. Beteta, T. Ackernley [et al.] | |
| 203 | |a Text |c electronic | ||
| 300 | |a Title screen | ||
| 320 | |a [References: 56 tit.] | ||
| 330 | |a A study of the lineshape of the χc1(3872) state is made using a data sample corresponding to an integrated luminosity of 3 fb−1 collected in pp collisions at center-of-mass energies of 7 and 8 TeV with the LHCb detector. Candidate χc1(3872) and ψ(2S) mesons from b-hadron decays are selected in the J/ψπ+π− decay mode. Describing the lineshape with a Breit-Wigner function, the mass splitting between the χc1(3872) and ψ(2S) states, Δm, and the width of the χc1(3872) state, ΓBW, are determined to be Δm=185.598±0.067±0.068 MeV,ΓBW=1.39±0.24±0.10 MeV, where the first uncertainty is statistical and the second systematic. Using a Flatté-inspired model, the mode and full width at half maximum of the lineshape are determined to be mode=3871.69+0.00+0.05−0.04−0.13 MeV,FWHM=0.22+0.07+0.11−0.06−0.13 MeV. An investigation of the analytic structure of the Flatté amplitude reveals a pole structure, which is compatible with a quasibound D0¯D*0 state but a quasivirtual state is still allowed at the level of 2 standard deviations. | ||
| 461 | |t Physical Review D |o particles, fields, gravitation, and cosmology | ||
| 463 | |t Vol. 102, iss. 9 |v [092005, 20 p.] |d 2020 | ||
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| 701 | 1 | |a Beteta |b C. A. |g Carlos Abellan | |
| 701 | 1 | |a Ackernley |b T. | |
| 701 | 1 | |a Adeva |b B. |g Bernardo | |
| 701 | 1 | |a Eydelman |b S. I. |g Semen Isaakovich | |
| 701 | 1 | |a Kharisova |b A. E. |c nuclear technology specialist |c engineer of Tomsk Polytechnic University |f 1994- |g Anastasiya Evgenjevna |3 (RuTPU)RU\TPU\pers\46775 | |
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| 712 | 0 | 2 | |a Национальный исследовательский Томский политехнический университет |b Исследовательская школа физики высокоэнергетических процессов |c (2017- ) |3 (RuTPU)RU\TPU\col\23551 |
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| 856 | 4 | |u https://doi.org/10.1103/PhysRevD.102.092005 | |
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