Schmidt, Marcel ; Jansen, M. ; Hammer, Hans-Werner (2018)
Threshold effects and the line shape of the X(3872) in effective field theory.
In: Physical Review D, 98 (1)
doi: 10.1103/PhysRevD.98.014032
Artikel, Bibliographie
Dies ist die neueste Version dieses Eintrags.
Kurzbeschreibung (Abstract)
Latest measurements suggest that the X(3872) mass lies less than 200 keV away from the D⁰D¯ ⁰* threshold, reenforcing its interpretation as a loosely bound mesonic molecule. This observation implies that in processes like D⁰D¯⁰ π⁰ production, threshold effects could disguise the actual pole position of the X(3872). We propose a new effective field theory with D⁰, D¯ ⁰, and π⁰ degrees of freedom for the X(3872), considering Galilean invariance to be an exact symmetry. The D⁰ enters as a D⁰π⁰ p-wave resonance, allowing for a comprehensive study of the influence of pion interactions on the Xð3872Þ width. We calculate relations between the mass of the X(3872), its width, and its line shape in D⁰D¯⁰ π⁰ production up to next-to-leading order. Our results provide a tool for the extraction of the X(3872) pole position from the experimental data near threshold.
| Typ des Eintrags: | Artikel |
|---|---|
| Erschienen: | 2018 |
| Autor(en): | Schmidt, Marcel ; Jansen, M. ; Hammer, Hans-Werner |
| Art des Eintrags: | Bibliographie |
| Titel: | Threshold effects and the line shape of the X(3872) in effective field theory |
| Sprache: | Englisch |
| Publikationsjahr: | 2018 |
| Verlag: | American Physical Society |
| Titel der Zeitschrift, Zeitung oder Schriftenreihe: | Physical Review D |
| Jahrgang/Volume einer Zeitschrift: | 98 |
| (Heft-)Nummer: | 1 |
| Kollation: | 19 Seiten |
| DOI: | 10.1103/PhysRevD.98.014032 |
| Zugehörige Links: | |
| Kurzbeschreibung (Abstract): | Latest measurements suggest that the X(3872) mass lies less than 200 keV away from the D⁰D¯ ⁰* threshold, reenforcing its interpretation as a loosely bound mesonic molecule. This observation implies that in processes like D⁰D¯⁰ π⁰ production, threshold effects could disguise the actual pole position of the X(3872). We propose a new effective field theory with D⁰, D¯ ⁰, and π⁰ degrees of freedom for the X(3872), considering Galilean invariance to be an exact symmetry. The D⁰ enters as a D⁰π⁰ p-wave resonance, allowing for a comprehensive study of the influence of pion interactions on the Xð3872Þ width. We calculate relations between the mass of the X(3872), its width, and its line shape in D⁰D¯⁰ π⁰ production up to next-to-leading order. Our results provide a tool for the extraction of the X(3872) pole position from the experimental data near threshold. |
| Sachgruppe der Dewey Dezimalklassifikatin (DDC): | 500 Naturwissenschaften und Mathematik > 530 Physik |
| Fachbereich(e)/-gebiet(e): | 05 Fachbereich Physik 05 Fachbereich Physik > Institut für Kernphysik |
| Hinterlegungsdatum: | 02 Aug 2024 12:39 |
| Letzte Änderung: | 02 Aug 2024 12:39 |
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| Suche nach Titel in: | TUfind oder in Google |
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Threshold effects and the line shape of the X(3872) in effective field theory. (deposited 11 Mär 2022 13:17)
- Threshold effects and the line shape of the X(3872) in effective field theory. (deposited 02 Aug 2024 12:39) [Gegenwärtig angezeigt]
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