Leading 10 institutional collaborations in physical sciences

The leading 10 institutional north-south collaborations in physical sciences, ranked by total bilateral collaboration score (Bilateral CS) based on collaborative articles in the subject between north and south countries from 2015 to 2022. North and south countries were defined using the World Bank’s income-group classifications. See this supplement’s Guide to the Index for more information. Also listed are the corresponding Share contributions (CS1 & CS2) from the institutional pair over the same period.

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Rank	Institution 1 (North)	Location 1	CS1	Institution 2 (South)	Location 2	CS2	Bilateral CS
1	National Institute for Nuclear Physics (INFN)	Italy	84.90	The National Academy of Sciences of Ukraine (NASU)	Ukraine	4.25	89.15
2	National Institute for Nuclear Physics (INFN)	Italy	52.87	Homi Bhabha National Institute (HBNI)	India	26.11	78.98
3	National Institute for Nuclear Physics (INFN)	Italy	70.71	Kharkov Institute of Physics and Technology (KIPT)	Ukraine	2.43	73.14
4	European Organization for Nuclear Research (CERN)	Switzerland	60.36	The National Academy of Sciences of Ukraine (NASU)	Ukraine	1.93	62.28
5	European Organization for Nuclear Research (CERN)	Switzerland	53.53	Kharkov Institute of Physics and Technology (KIPT)	Ukraine	1.86	55.39
6	National Institute for Nuclear Physics (INFN)	Italy	46.69	Panjab University (PU)	India	4.42	51.12
7	National Institute for Nuclear Physics (INFN)	Italy	39.27	Tata Institute of Fundamental Research (TIFR)	India	7.02	46.29
8	European Organization for Nuclear Research (CERN)	Switzerland	30.74	Homi Bhabha National Institute (HBNI)	India	11.97	42.70
9	Helmholtz Association of German Research Centres	Germany	26.00	Homi Bhabha National Institute (HBNI)	India	14.56	40.56
10	Helmholtz Association of German Research Centres	Germany	33.48	The National Academy of Sciences of Ukraine (NASU)	Ukraine	6.81	40.29