In order to enable an iCal export link, your account needs to have an API key created. This key enables other applications to access data from within Indico even when you are neither using nor logged into the Indico system yourself with the link provided. Once created, you can manage your key at any time by going to 'My Profile' and looking under the tab entitled 'HTTP API'. Further information about HTTP API keys can be found in the Indico documentation.
Additionally to having an API key associated with your account, exporting private event information requires the usage of a persistent signature. This enables API URLs which do not expire after a few minutes so while the setting is active, anyone in possession of the link provided can access the information. Due to this, it is extremely important that you keep these links private and for your use only. If you think someone else may have acquired access to a link using this key in the future, you must immediately create a new key pair on the 'My Profile' page under the 'HTTP API' and update the iCalendar links afterwards.
Permanent link for public information only:
Permanent link for all public and protected information:
Richard F. Lebed
(Arizona State University (USA))
Seminar Room 1.1.1. (IFIC)
Seminar Room 1.1.1.
A third class of hadron, the tetraquark, now joins mesons and baryons, since one such candidate state [Z(4475)] has very recently been confirmed by LHCb to be a true resonant state. We begin by briefly reviewing the most significant results, the discovery of the so-called X, Y, and Z states, leading to this event. Then we pose the natural question, what is the structure of these states? We examine the most popular pictures for their structure and identify why each of them is problematic. We then propose an entirely new picture of the tetraquarks as non-static bound states of a diquark and antidiquark held together by a color flux tube. This picture addresses some interesting mysteries including why some XYZ states decay preferentially to excited charmonium, and why they are generically not especially broad. We finish by discussing ongoing work to study the relationship of their masses with the positions of di-meson thresholds, and how they can be identified in upcoming experiments via large-s cross section scaling behavior.