4,597 research outputs found

    Current stage of the ATCA follow-up for SPLASH

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    Four ground-state OH transitions were detected in emission, absorption and maser emission in the Southern Parkes Large-Area Survey in Hydroxyl (SPLASH). We re-observed these OH masers with the Australia Telescope Compact Array to obtain positions with high accuracy (~1 arcsec). According to the positions, we categorised these OH masers into different classes, i.e. star formation, evolved stars, supernova remnants and unknown origin. We found one interesting OH maser source (G336.644-0.695) in the pilot region, which has been studied in detail in Qiao et al. (2016a). In this paper, we present the current stage of the ATCA follow-up for SPLASH and discuss the potential future researches derived from the ATCA data.Comment: 2 pages, conference, IAU symposium 33

    A Possibility of Search for New Physics at LHCb

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    It is interesting to search for new physics beyond the standard model at LHCb. We suggest that weak decays of doubly charmed baryon such as Ξcc(3520)+,Ξcc++\Xi_{cc}(3520)^+, \Xi_{cc}^{++} to charmless final states would be a possible signal for new physics. In this work, we consider two models, i.e. the unparticle and ZZ' as examples to study such possibilities. We also discuss the cases for Ξbb0,Ξbb\Xi^0_{bb}, \Xi_{bb}^- which have not been observed yet, but one can expect to find them when LHCb begins running. Our numerical results show that these two models cannot result in sufficiently large decay widths, therefore if such modes are observed at LHCb, there must be a new physics other than the unparticle or ZZ' models.Comment: 7 pages, 3 figures, 1 table. More references and discussion adde

    Fragmented Laws, Contingent Choices: The Tragicomedy of the Village Commons in China

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    Defining the direct conflict between law and social norms as a tragedy and their reconciliation as a comedy, this paper serves as a case study of the mixture of tragedies and comedies of collective land governance in China. The term tragicomedy encapsulates such a mixture. This paper presents two contrasting cases of collective land governance: one village co-op is captured by a mafia and the consequent mafia-style land development business is maintained through violence and the bribing of government officials; the other village co-op from time to time takes actions “in the name of law” in their bargaining for legal property rights with the government and with a hold-out couple who refused to submit their “nailhouse” to the village co-op for redevelopment. This paper reveals that the different identities that village leaders simultaneously assume under different social control systems are key to understanding the co-evolution of property law and norms. It also highlights the essential roles of the laws and communities’ legal strategies in governing common-pool resources
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