Universitätspublikationen
Refine
Year of publication
- 2021 (2970)
- 2020 (2524)
- 2019 (2342)
- 2022 (2155)
- 2018 (2128)
- 2017 (1983)
- 2016 (1756)
- 2015 (1742)
- 2014 (1711)
- 2023 (1698)
- 2013 (1570)
- 2012 (1503)
- 2010 (1361)
- 2011 (1240)
- 2024 (712)
- 2009 (612)
- 2008 (441)
- 2007 (267)
- 2004 (245)
- 2003 (241)
- 2005 (228)
- 2006 (218)
- 2002 (152)
- 2001 (117)
- 1998 (94)
- 1999 (81)
- 2000 (78)
- 1994 (67)
- 1991 (65)
- 1993 (62)
- 1996 (59)
- 1988 (56)
- 1997 (55)
- 1995 (52)
- 1990 (49)
- 1992 (48)
- 1987 (47)
- 1989 (43)
- 1969 (42)
- 1976 (42)
- 1978 (42)
- 1986 (42)
- 1913 (40)
- 1981 (39)
- 1972 (38)
- 1971 (37)
- 1975 (37)
- 1977 (37)
- 1982 (37)
- 1984 (37)
- 1985 (36)
- 1974 (34)
- 1983 (33)
- 1968 (31)
- 1973 (30)
- 1970 (27)
- 1966 (25)
- 1967 (24)
- 1962 (21)
- 1953 (19)
- 1947 (18)
- 1954 (18)
- 1957 (18)
- 1965 (18)
- 1952 (16)
- 1956 (16)
- 1980 (16)
- 1963 (14)
- 1964 (14)
- 1955 (13)
- 1960 (13)
- 1923 (12)
- 1979 (12)
- 1921 (11)
- 1925 (11)
- 1959 (10)
- 1926 (9)
- 1950 (9)
- 1924 (8)
- 1928 (8)
- 1958 (8)
- 1961 (8)
- 1904 (7)
- 1907 (7)
- 1915 (7)
- 1916 (7)
- 1927 (7)
- 1908 (6)
- 1911 (6)
- 1922 (6)
- 1930 (6)
- 1939 (6)
- 1949 (6)
- 1951 (6)
- 1885 (5)
- 1897 (5)
- 1901 (5)
- 1903 (5)
- 1912 (5)
- 1914 (5)
- 1918 (5)
- 1919 (5)
- 1933 (5)
- 1934 (5)
- 1936 (5)
- 1896 (4)
- 1910 (4)
- 1920 (4)
- 1929 (4)
- 1938 (4)
- 1942 (4)
- 1948 (4)
- 1898 (3)
- 1906 (3)
- 1931 (3)
- 1935 (3)
- 1763 (2)
- 1894 (2)
- 1899 (2)
- 1902 (2)
- 1905 (2)
- 1909 (2)
- 1917 (2)
- 1932 (2)
- 1937 (2)
- 1943 (2)
- 1946 (2)
- 1657 (1)
- 1662 (1)
- 1762 (1)
- 1862 (1)
- 1880 (1)
- 1881 (1)
- 1883 (1)
- 1889 (1)
- 1890 (1)
- 1892 (1)
- 1940 (1)
- 1941 (1)
Document Type
- Article (13696)
- Part of Periodical (3485)
- Doctoral Thesis (3328)
- Contribution to a Periodical (2163)
- Book (2107)
- Working Paper (1888)
- Preprint (1712)
- Review (1063)
- Report (909)
- Conference Proceeding (699)
Language
- English (17423)
- German (14002)
- Portuguese (231)
- Spanish (123)
- Italian (66)
- French (64)
- Multiple languages (64)
- Turkish (12)
- Ukrainian (10)
- slo (7)
Keywords
- Deutschland (132)
- COVID-19 (98)
- inflammation (96)
- Financial Institutions (92)
- ECB (69)
- Capital Markets Union (67)
- SARS-CoV-2 (64)
- Financial Markets (61)
- Adorno (58)
- Banking Regulation (52)
Institute
- Medizin (6667)
- Präsidium (5132)
- Physik (3534)
- Wirtschaftswissenschaften (2296)
- Gesellschaftswissenschaften (2021)
- Biowissenschaften (1767)
- Frankfurt Institute for Advanced Studies (FIAS) (1669)
- Sustainable Architecture for Finance in Europe (SAFE) (1401)
- Biochemie und Chemie (1400)
- Informatik (1390)
- Center for Financial Studies (CFS) (1264)
- Rechtswissenschaft (1059)
- Neuere Philologien (821)
- House of Finance (HoF) (805)
- Exzellenzcluster Die Herausbildung normativer Ordnungen (735)
- Geschichtswissenschaften (726)
- Geowissenschaften (687)
- Biochemie, Chemie und Pharmazie (674)
- Philosophie (570)
- Kulturwissenschaften (531)
- Psychologie (481)
- E-Finance Lab e.V. (436)
- Universitätsbibliothek (422)
- Institut für Ökologie, Evolution und Diversität (405)
- Institut für Sozialforschung (IFS) (394)
- Senckenbergische Naturforschende Gesellschaft (394)
- Erziehungswissenschaften (377)
- Institut für Wirtschaft, Arbeit, und Kultur (IWAK) (368)
- Pharmazie (335)
- Sprach- und Kulturwissenschaften (312)
- Biodiversität und Klima Forschungszentrum (BiK-F) (292)
- Evangelische Theologie (275)
- Geographie (241)
- Psychologie und Sportwissenschaften (224)
- Geowissenschaften / Geographie (218)
- Sportwissenschaften (217)
- Institute for Monetary and Financial Stability (IMFS) (205)
- Informatik und Mathematik (204)
- Institut für sozial-ökologische Forschung (ISOE) (197)
- Mathematik (193)
- Exzellenzcluster Makromolekulare Komplexe (173)
- MPI für Biophysik (168)
- Sprachwissenschaften (159)
- MPI für Hirnforschung (134)
- Georg-Speyer-Haus (130)
- Sonderforschungsbereiche / Forschungskollegs (126)
- Buchmann Institut für Molekulare Lebenswissenschaften (BMLS) (108)
- Zentrum für Biomolekulare Magnetische Resonanz (BMRZ) (105)
- Ernst Strüngmann Institut (95)
- Zentrum für Arzneimittelforschung, Entwicklung und Sicherheit (ZAFES) (93)
- Philosophie und Geschichtswissenschaften (80)
- Institute for Law and Finance (ILF) (68)
- Katholische Theologie (64)
- Cornelia Goethe Centrum für Frauenstudien und die Erforschung der Geschlechterverhältnisse (CGC) (59)
- Deutsches Institut für Internationale Pädagogische Forschung (DIPF) (55)
- Foundation of Law and Finance (50)
- Hessische Stiftung für Friedens- und Konfliktforschung (HSFK) (48)
- MPI für empirische Ästhetik (44)
- Interdisziplinäres Zentrum für Ostasienstudien (IZO) (40)
- ELEMENTS (37)
- Gleichstellungsbüro (36)
- Fachübergreifend (35)
- Frobenius Institut (33)
- Europäische Akademie der Arbeit in der Universität Frankfurt am Main (32)
- Zentrum für Weiterbildung (31)
- Starker Start ins Studium: Qualitätspakt Lehre (30)
- Extern (29)
- Hochschulrechenzentrum (27)
- Zentrum für Interdisziplinäre Afrikaforschung (ZIAF) (26)
- LOEWE-Schwerpunkt Außergerichtliche und gerichtliche Konfliktlösung (25)
- studiumdigitale (25)
- Sigmund-Freud Institut – Forschungsinstitut fur Psychoanalyse und ihre Anwendungen (19)
- Universität des 3. Lebensalters e.V. (19)
- Akademie für Bildungsforschung und Lehrerbildung (bisher: Zentrum für Lehrerbildung und Schul- und Unterrichtsforschung) (18)
- Exzellenzcluster Herz-Lungen-System (18)
- Center for Membrane Proteomics (CMP) (17)
- Museum Giersch der Goethe Universität (17)
- Forschungskolleg Humanwissenschaften (16)
- Centre for Drug Research (15)
- Zentrum für Nordamerika-Forschung (ZENAF) (15)
- Center for Scientific Computing (CSC) (11)
- Interdisziplinäres Zentrum für Neurowissenschaften Frankfurt (IZNF) (9)
- keine Angabe Institut (9)
- LOEWE-Schwerpunkt für Integrative Pilzforschung (8)
- Forschungszentrum Historische Geisteswissenschaften (FHG) (7)
- Fritz Bauer Institut (7)
- Helmholtz International Center for FAIR (7)
- DFG-Forschergruppen (6)
- Goethe-Zentrum für Wissenschaftliches Rechnen (G-CSC) (6)
- Zentrum für Hochschulsport (ZfH) (6)
- Internationales Studienzentrum (4)
- Frankfurt MathFinance Institute (FMFI) (3)
- Institut für Religionsphilosophische Forschung (3)
- Schreibzentrum (3)
- Zentrale Einrichtung (3)
- (2)
- Akademie für Bildungsforschung und Lehrkräftebildung (2)
- Institut für Bienenkunde (2)
- Wilhelm-Merton-Zentrum (2)
- Diagnostic Center of Acute Leukemia (1)
- Exzellenzcluster (1)
- Fachübergreifende Einrichtungen (1)
- Forschungscluster (1)
- GRADE - Goethe Research Academy for Early Career Researchers (1)
- Katholische Hochschulgemeinde (KHG) (1)
- SFB 268 (1)
- Zentrum zur Erforschung der Frühen Neuzeit (Renaissance-Institut) (1)
- keine Angabe Fachbereich (1)
Schülerlabor Künstliche Intelligenz – Verhaltensforschung im Biologieunterricht mit neuen Methoden
(2023)
Die Verhaltensbiologie ist ein wichtiger Inhalt im Biologieunterricht. Das zielgerichtete, forschende Beobachten bereitet den Schüler/-innen jedoch häufg Schwierigkeiten und sollte vor allem praktisch eingeübt werden. Das Schülerlabor KILab bietet dafür eine innovative Möglichkeit.
Manipulation of neuronal or muscular activity by optogenetics or other stimuli can be directly linked to the analysis of Caenorhabditis elegans (C. elegans) body length. Thus, WormRuler was developed as an open-source video analysis toolbox that offers video processing and data analysis in one application. Utilizing this novel tool, the super red-shifted channelrhodopsin variant, ChrimsonSA, was characterized in C. elegans. Expression and activation of ChrimsonSA in GABAergic motor neurons results in their depolarization and therefore elongation of body length, the extent of which providing information about the strength of neuronal transmission.
The relationship between external and internal load parameters in 3 × 3 basketball tournaments
(2022)
Purpose
3 × 3 basketball games are characterized by high-intensity accelerations and decelerations, and a high number of changes of direction and jumps. It is played in tournament form with multiple games per day. Therefore, optimal regeneration is crucial for maintaining a high performance level over the course of the tournament. To elucidate how load of a match affects the athletes' bodies (i.e., internal load), muscular responses to the load of 3 × 3 games were analyzed. We aimed to investigate changes in contractility of the m. rectus femoris (RF) and m. gastrocnemius medialis (GC) in response to the load of single 3 × 3 games and a 3 × 3 tournament.
Methods
Inertial movement analysis was conducted to capture game load in 3 × 3. Changes in contractility were measured using tensiomyography (TMG). During a two-day tournament, TMG measurements were conducted in the morning and after each game. Additionally, off-game performance analysis consisting of jump and change-of-direction (COD) tests was conducted the day before the tournament.
Results
Significant changes of the muscle contractility were found for GC with TMG values being higher in the baseline than in the post-game measurements. In contrast to athletes of the GC group, athletes of the RF group responded with either decreased or increased muscle contractility after a single 3 × 3 game. A significant correlation between external and internal load parameters could not be shown. Concerning off-game performance, significant correlations can be reported for COD test duration, CMJ height and ∆Vc as well as COD test duration and ∆Dm. No systematic changes in muscle contractility were found over the course of the tournament in RF and GC.
Conclusion
The athletes' external 3 × 3 game load and their performance level did not seem to affect muscular contractility after a single 3 × 3 game or a complete 3 × 3 tournament within this investigation. This might indicate that elite athletes can resist external load without relevant local muscular fatigue. With respect to the course of the tournament, it can therefore be concluded that the breaks between games seem to be sufficient to return to the initial level of muscle contractility.
Significant progress has been made in the management of Wilms tumor (WT) in recent years, mostly as a result of collaborative efforts and the implementation of protocol-driven, multimodal therapy. This article offers a comprehensive overview of current multidisciplinary treatment strategies for WT, whilst also addressing recent technical innovations including nephron-sparing surgery (NSS) and minimally invasive approaches. In addition, surgical concepts for the treatment of metastatic disease, advances in tumor imaging technology and potentially prognostic biomarkers will be discussed. Current evidence suggests that, in experienced hands and selected cases, laparoscopic radical nephrectomy and laparoscopic-assisted partial nephrectomy for WT may offer the same outcome as the traditional open approach. While NSS is the standard procedure for bilateral WT, NSS has evolved as an alternative technique in patients with smaller unilateral WT and in cases with imminent renal failure. Metastatic disease of the lung or liver that is associated with WT is preferably treated with a three-drug chemotherapy and local radiation therapy. However, surgical sampling of lung nodules may be advisable in persistent nodules before whole lung irradiation is commenced. Several tumor markers such as loss of heterozygosity of chromosomes 1p/16q, 11p15 and gain of function at 1q are associated with an increased risk of recurrence or a decreased risk of overall survival in patients with WT. In summary, complete resection with tumor-free margins remains the primary surgical aim in WT, while NSS and minimally invasive approaches are only suitable in a subset of patients with smaller WT and low-risk disease. In the future, advances in tumor imaging technology may assist the surgeon in defining surgical resection margins and additional biomarkers may emerge as targets for development of new diagnostic tests and potential therapies.
Objectiv:e To explore the association of physical activity (PA) with musculoskeletal pain (MSK pain).
Design: Cross-sectional study
Setting: 14 countries (Argentina, Australia, Austria, Brazil, Chile, France, Germany, Italy, the Netherlands, Singapore, South Africa, Spain, Switzerland and the USA).
Participants: Individuals aged 18 or older.
Primary and secondary outcome measures: PA volumes were assessed with an adapted version of the Nordic Physical Activity Questionnaire-short. Prevalence of MSK pain was captured by means of a 20-item checklist of body locations. Based on the WHO recommendation on PA, participants were classified as non-compliers (0–150 min/week), compliers (150–300 min/week), double compliers (300–450 min/week), triple compliers (450–600 min/week), quadruple compliers (600–750 min/week), quintuple compliers (750–900 min/week) and top compliers (more than 900 min/week). Multivariate logistic regression was used to obtain adjusted ORs of the association between PA and MSK pain for each body location, correcting for age, sex, employment status and depression risk.
Results: A total of 13 741 participants completed the survey. Compared with non-compliers, compliers had smaller odds of MSK pain in one location (thoracic pain, OR 0.77, 95% CI 0.64 to 0.93). Double compliance was associated with reduced pain occurrence in six locations (elbow, OR 0.70, 95% CI 0.50 to 0.98; forearm, OR 0.63, 95% CI 0.40 to 0.99; wrist, OR 0.74, 95% CI 0.57 to 0.98; hand, OR 0.57, 95% CI 0.40 to 0.79; fingers, OR 0.72, 95% CI 0.52 to 0.99; abdomen, OR 0.61, 95% CI 0.41 to 0.91). Triple to top compliance was also linked with lower odds of MSK pain (five locations in triple compliance, three in quadruple compliance, two in quintuple compliance, three in top compliance), but, at the same time, presented increased odds of MSK pain in some of the other locations.
Conclusion: A dose of 300–450 min WHO-equivalent PA/week was associated with lower odds of MSK pain in six body locations. On the other hand, excessive doses of PA were associated with higher odds of pain in certain body locations.
The international system of states displays an inherent drive to territorialize the global commons. But territorialization is not a continuous process—it occurs in episodes. In this article, I use one case from ocean governance, the expansion of territory into near‐shore areas of the seas, to advance a twofold argument about the nature of these episodes. First, I argue that the root causes of this drive to territorialize “empty space” are located in global politics, norms, and economics. Second, a territorializing episode occurs when there are impelling economic incentives, and when great powers are unable or unwilling to oppose territorialization. However, this can lead to different outcomes: sovereign territories, functional territories, or internationalized territories. Oceanic space has seen a series of these territorializing episodes since the end of the Second World War and functional territorialization has become more prevalent over time.
Social identification is health-beneficial as social groups provide social support (i.e., the social cure effect). We study this social cure effect in diabetes patients by focusing on two relevant sources of social support, namely medical practitioners (MP) and fellow patients. As both groups have diabetes-specific knowledge, we predict that sharing an identity with them provides access to specific support, which, in turn, optimizes individuals’ diabetes management and reduces diabetes-related stress. We further predict that identifying with their MP or fellow patients will be more strongly related to perceived social support among individuals with lower diabetes-specific resilience because they pay more attention to supportive cues. We tested this moderated mediation model in a two-wave study with n = 200 diabetes patients. Identification with the MP related to more support, which, in turn, was related to better diabetes management and less diabetes-specific stress. Identification with fellow patients related to more support; however, social support was unrelated to diabetes management and stress. Resilience only moderated the relationship between MP identification and support, as people with lower resilience levels reported more support from their MP. This study shows the importance of social identification with the MP and other diabetes patients, especially for people with lower resilience levels.
Based on (10087±44)×106 J/ψ events collected with the BESIII detector, the process J/ψ→γπ+π−η′ is studied using two dominant decay channels of the η′ meson, η′→γπ+π− and η′→ηπ+π−,η→γγ. The X(2600) is observed with a statistical significance larger than 20σ in the π+π−η′ invariant mass spectrum, and it has a strong correlation to a structure around 1.5 GeV/{\it c}2 in the π+π− invariant mass spectrum. A simultaneous fit on the π+π−η′ and π+π− invariant mass spectra with the two η′ decay modes indicates that the mass and width of the X(2600) state are 2617.8±2.1+18.2−1.9 MeV/{\it c}2 and 200±8+20−17 MeV, respectively. The corresponding branching fractions are measured to be B(J/ψ→γX(2600))⋅B(X(2600)→f0(1500)η′)⋅B(f0(1500)→π+π−) = (3.39±0.18+0.91−0.66)×10−5 and B(J/ψ→γX(2600))⋅B(X(2600)→f′2(1525)η′)⋅B(f′2(1525)→π+π−) = (2.43±0.13+0.31−1.11)×10−5, where the first uncertainties are statistical, and the second systematic.
Seit Beginn des 20. Jahrhunderts verzeichnete das ärztliche Berufsfeld einen steten Zuwachs von Frauen. Gegenwärtig weist insbesondere die Pädiatrie einen besonders hohen Frauenanteil auf. Es ist jedoch zu beobachten, dass ungeachtet dessen, Führungspositionen weiterhin vorwiegend von Männern besetzt bleiben.
Vor diesem Hintergrund wurden in der vorliegenden Studie Geschlechterdisparitäten in der pädiatrischen Forschung anhand von wissenschaftlichen Autorenschaften für den Zeitraum von 2008 bis 2018 untersucht.
Insgesamt wurden 690 436 Autorenschaften aus 156 642 englischsprachigen Originalartikeln für die Untersuchung herangezogen. Die Analyse umfasste den Anteil weiblicher Autorenschaften (Female Authorship Proportion, FAP), die Verteilung auf Erst-, Co- und Letzt-Autorenschaften, geschlechtsspezifische Zitationsraten, eine Produktivitätsanalyse sowie Untersuchungen zu Journalen, Ländern und pädiatrischen Teildisziplinen.
Insgesamt betrug der Anteil weiblicher Autorenschaften 46,6%. Dabei fanden sich Autorinnen auf 52,0% der Erst-, 47,6% der Co- und 37,5% der Letzt-Autorenschaften. Auch die Odds Ratio weiblicher Autorenschaft (Female Authorship Odds Ratio, FAOR) war jeweils am höchsten für die Erst-Autorenschaft (1,30) und am niedrigsten für die Letzt-Autorenschaft (0,63). Auf prestigeträchtigen Erst- und Letzt-Autorenschaften waren Frauen mit einem Prestige-Index (PI) von -0,13 insgesamt unterrepräsentiert. Der zeitliche Verlauf offenbarte einen Zuwachs weiblicher Autorenschaften, mit Akzentuierung auf Erst- und Letzt-Autorenschaften.
In den Teilanalysen von einzelnen Ländern, Journalen und pädiatrischen Teildisziplinen konnte jeweils eine erhebliche Spannbreite der FAP sowie des PI festgestellt werden. Dabei wiesen beinahe alle Länder und Journale sowie sämtliche pädiatrischen Teildisziplinen eine signifikante Unterrepräsentation von Frauen auf Letztautorenschaften auf. Zwischen dem Einfluss eines Journals und dessen FAP oder PI konnte keine lineare Korrelation nachgewiesen werden.
Die Produktivitätsanalyse ergab, dass männliche Autoren im Schnitt mehr Artikel veröffentlichten als weibliche Autoren. Der Großteil der Autorinnen (64,7%) veröffentlichte während des untersuchten Zeitraums einen einzigen wissenschaftlichen Artikel. Zitationszahlen sowie die Repräsentanz in Multiautorenartikeln zeigten sich jeweils annähernd geschlechterneutral.
Die erzielten Resultate dieser Analyse ließen Rückschlüsse auf die Integration von Frauen in der pädiatrischen Forschung zu. Insgesamt war die weibliche Repräsentanz in der Pädiatrie, insbesondere in Relation zu anderen Wissenschaftsbereichen, hoch. Der sukzessive Anstieg der FAP über den untersuchten Zeitraum spiegelte den zunehmenden Anteil von Frauen in der Pädiatrie wider. In den Bereichen Zitationsraten und Prestige-Index kam eine annähernde Geschlechterparität zum Ausdruck.
Deutliche Disparitäten wurden dahingegen bei Betrachtung der Verteilungsmuster von weiblichen Erst-, Co- und Letzt-Autorenschaften aufgedeckt. Hier zeigte sich eine Karrieredichotomie: Frauen waren auf Erst-Autorenschaften überrepräsentiert, was vornehmlich dem Karrierebeginn entspricht. Männer waren dahingegen auf Letzt-Autorenschaften überrepräsentiert, was wiederum mit leitenden Positionen assoziiert ist.
Interessanterweise konnten auf globaler Ebene hohe Wachstumsraten der FAP für Letzt-Autorenschaften und eine deutlich ansteigende FAOR für eine Letzt-Autorenschaft festgestellt werden. Diese Ergebnisse implizieren, dass Wissenschaftlerinnen vermehrt, Führungspositionen besetzten. Linearen Hochrechnungen zufolge ist in den kommenden Jahren mit verbesserten Karrierechancen für Frauen in der pädiatrischen Forschung zu rechnen
Die Tschechische Republik ist im Zeitraum von 2022 - 2025 Partnerland des bibliothekarischen Dachverbandes Bibliothek & Information Deutschland (BID). In diesem Partnerschaftsprogramm ermöglichte die Kommission für den internationalen Fachaustausch des BID, Bibliothek & Information International (BII), im September 2023 eine einwöchige Studienreise nach Tschechien, um den interkulturellen Austausch zwischen Öffentlichen und Wissenschaftlichen Bibliotheken zu stärken. Während der Reise wurde zusätzlich die Teilnahme am internationalen Bibliothekskongress Knihovny současnosti 2023 in Olomouc/Olmütz organisiert. Zwölf Bibliothekarinnen und Bibliothekare, vertreten aus Öffentlichen, Wissenschaftlichen und Spezialbibliotheken aus ganz Deutschland, lernten sich in dieser Woche kennen und erlebten einen fachlich wie persönlich sehr intensiven Austausch.
Based on a sample of (10.09±0.04)×109 J/ψ events collected with the BESIII detector operating at the BEPCII storage ring, a partial wave analysis of the decay J/ψ→γηη′ is performed. An isoscalar state with exotic quantum numbers JPC=1−+, denoted as η1(1855), has been observed for the first time with statistical significance larger than 19σ. Its mass and width are measured to be (1855±9+6−1)~MeV/c2 and (188±18+3−8)~MeV, respectively. The product branching fraction B(J/ψ→γη1(1855)→γηη′) is measured to be (2.70±0.41+0.16−0.35)×10−6. The first uncertainties are statistical and the second are systematic. In addition, an upper limit on the branching ratio B(f0(1710)→ηη′)/B(f0(1710)→ππ) is determined to be 1.61×10−3 at 90\% confidence level, which lends support to the hypothesis that the f0(1710) has a large glueball component.
Study of ψ(3686) → ΛΛ¯ω
(2022)
Based on a data sample of (448.1±2.9)×106 ψ(3686) events collected with the BESIII detector at the BEPCII collider, the branching fraction of ψ(3686)→ΛΛ¯ω is measured to be (3.30±0.34(stat.)±0.29(syst.))×10−5 for the first time. In addition, the Λω (or Λ¯ω) invariant mass spectra is studied and the potential presence of excited Λ states has been investigated.
The study of the Cabibbo-favored semileptonic decay Λ+𝑐→Λ𝑒+𝜈𝑒 is reported using a 4.5 fb−1 data sample of 𝑒+𝑒− annihilations collected at center-of-mass energies ranging from 4.600 GeV to 4.699 GeV with the BESIII detector at the BEPCII collider. The branching fraction of the decay is measured to be ℬ(Λ+𝑐→Λ𝑒+𝜈𝑒)=(3.56±0.11stat±0.07syst)%, which is the most precise measurement to date. Furthermore, we perform an investigation of the internal dynamics in Λ+𝑐→Λ𝑒+𝜈𝑒. We provide the first direct comparisons of the differential decay rate and form factors with those predicted from lattice quantum chromodynamics (LQCD) calculations. Combining the measured branching fraction with a 𝑞2-integrated rate predicted by LQCD, we determine 𝑉𝑐𝑠|=0.936±0.017ℬ±0.024LQCD±0.007𝜏Λ𝑐.
Based on a sample of 4.4 fb−1 of e+e− annihilation data collected in the energy region between 4.6 GeV and 4.7 GeV with the BESIII detector at BEPCII, two singly Cabibbo-suppressed decays Λ+c→Σ0K+ and Λ+c→Σ+K0S are studied. The ratio of the branching fraction B(Λ+c→Σ0K+) relative to B(Λ+c→Σ0π+) is measured to be 0.0361±0.0073(stat.)±0.0005(syst.), and the ratio of B(Λ+c→Σ+K0S) relative to B(Λ+c→Σ+π+π−) is measured to be 0.0106±0.0031(stat.)±0.0004(syst.). After taking the world-average branching fractions of the reference decay channels, the branching fractions B(Λ+c→Σ0K+) and B(Λ+c→Σ+K0S) are determined to be (4.7±0.9(stat.)±0.1(syst.)±0.3(ref.))×10−4 and (4.8±1.4(stat.)±0.2(syst.)±0.3(ref.))×10−4, respectively. The branching fraction of the Λ+c→Σ+K0S decay is measured for the first time.
Using 4.5 fb−1 of e+e− annihilation data samples collected at the center-of-mass energies ranging from 4.600~GeV to 4.699~GeV with the BESIII detector at the BEPCII collider, a first study of the semileptonic decays Λ+c→pK−e+νe, Λ+c→Λ(1520)e+νe and Λ+c→Λ(1405)e+νe is performed. The Λ+c→pK−e+νe decay is observed with a significance of 8.2σ and the branching fraction is measured to be B(Λ+c→pK−e+νe)=(0.88±0.17stat.±0.07syst.)×10−3. We also report evidence of Λ+c→Λ(1520)e+νe and Λ+c→Λ(1405)e+νe with significances of 3.3σ and 3.2σ, respectively, and measure B(Λ+c→Λ(1520)e+νe)=(1.02±0.52stat.±0.11syst.)×10−3 and B(Λ+c→Λ(1405)[→pK−]e+νe)=(0.42±0.19stat.±0.04syst.)×10−3. Combining these with the inclusive semileptonic Λ+c branching fraction measured by BESIII, the relative fraction is determined to be [B(Λ+c→pK−e+νe)/B(Λ+c→Xe+νe)]=(2.1±0.4stat.±0.2syst.)%, which provides a clear confirmation that semileptonic Λ+c decays are not saturated by the Λℓ+νℓ final state.
Using (448.1±2.9)×106 ψ(3686) events collected with the BESIII detector, we perform the first search for the weak baryonic decay ψ(3686)→Λ+cΣ¯−+c.c.. The analysis procedure is optimized using a blinded method. No significant signal is observed, and the upper limit on the branching fraction (B) of ψ(3686)→Λ+cΣ¯−+c.c. is set to be 1.4×10−5 at the 90\% confidence level.
Using (448.1±2.9)×106 ψ(3686) events collected with the BESIII detector, we perform the first search for the weak baryonic decay ψ(3686)→Λ+cΣ¯−+c.c.. The analysis procedure is optimized using a blinded method. No significant signal is observed, and the upper limit on the branching fraction (B) of ψ(3686)→Λ+cΣ¯−+c.c. is set to be 1.4×10−5 at the 90\% confidence level.
Using (448.1±2.9)×106 ψ(3686) events collected with the BESIII detector, we perform the first search for the weak baryonic decay ψ(3686)→Λ+cΣ¯−+c.c.. The analysis procedure is optimized using a blinded method. No significant signal is observed, and the upper limit on the branching fraction (B) of ψ(3686)→Λ+cΣ¯−+c.c. is set to be 1.4×10−5 at the 90\% confidence level.