Schmidt, Marcel ; Jansen, M. ; Hammer, Hans-Werner (2022)
Threshold effects and the line shape of the X(3872) in effective field theory.
In: Physical Review D, 2018, 98 (1)
doi: 10.26083/tuprints-00012796
Artikel, Zweitveröffentlichung, Verlagsversion
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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: | 2022 |
| Autor(en): | Schmidt, Marcel ; Jansen, M. ; Hammer, Hans-Werner |
| Art des Eintrags: | Zweitveröffentlichung |
| Titel: | Threshold effects and the line shape of the X(3872) in effective field theory |
| Sprache: | Englisch |
| Publikationsjahr: | 2022 |
| Publikationsdatum der Erstveröffentlichung: | 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: | 10.26083/tuprints-00012796 |
| URL / URN: | https://tuprints.ulb.tu-darmstadt.de/12796 |
| Zugehörige Links: | |
| Herkunft: | Zweitveröffentlichung |
| 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. |
| Status: | Verlagsversion |
| URN: | urn:nbn:de:tuda-tuprints-127964 |
| 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: | 11 Mär 2022 13:17 |
| Letzte Änderung: | 14 Mär 2022 08:29 |
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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) [Gegenwärtig angezeigt]
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