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Title Observation of Beam Spin Asymmetries in the Process ep -> e'pi+pi- with CLAS12
Authors Timothy Hayward,Christopher Dilks,Anselm Vossen,Harutyun Avagyan,Shankar Adhikari,Giovanni Angelini,Miguel Arratia Munoz,Hamza Atac,Carlos Ayerbe Gayoso,Nathan Baltzell,Luca Barion,Marco Battaglieri,Ivan Bedlinskiy,Fatiha Benmokhtar,Andrea Bianconi,Angela Biselli,Mariangela Bondi,Francesco Bossu,Sergey Boyarinov,William Briscoe,William Brooks,Dilini Bulumulla,Volker Burkert,Daniel Carman,Jose Carvajal,Andrea Celentano,Pierre Chatagnon,Taya Chetry,Giuseppe Ciullo,Brandon Clary,Philip Cole,Marco Contalbrigo,Giovanni Costantini,Volker Crede,Annalisa D'Angelo,Natalya Dashyan,Raffaella De Vita,Maxime Defurne,Alexandre Deur,Stefan Diehl,Chaden Djalali,Raphael Dupre,Michael Dugger,Hovanes Egiyan,Mathieu Ehrhart,Ahmed El Alaoui,Lamiaa El Fassi,Latifa Elouadrhiri,Stuart Fegan,Alessandra Filippi,Tony Forest,Gagik Gavalian,Gerard Gilfoyle,Francois-Xavier Girod-Gard,Derek Glazier,Anna Golubenko,Ralf Gothe,Yuri Gotra,Keith Griffioen,Michel Guidal,Kawtar Hafidi,Hayk Hakobyan,Mohammad Hattawy,Kenneth Hicks,Adam Hobart,Maurik Holtrop,David Ireland,Evgeny Isupov,Hyon-Suk Jo,Kyungseon Joo,Sylvester Joosten,Dustin Keller,Mariana Khachatryan,Achyut Khanal,Andrey Kim,Wooyoung Kim,Aron Kripko,Valery Kubarovsky,Sebastian Kuhn,Lucilla Lanza,Marco Leali,Sangbaek Lee,Paolo Lenisa,Kenneth Livingston,Ian MacGregor,Dominique Marchand,Nikolay Markov,Luca Marsicano,Valerio Mascagna,Bryan McKinnon,Zein-Eddine Meziani,Marco Mirazita,Viktor Mokeev,Aram Movsisyan,Carlos Munoz Camacho,Pawel Nadel-Turonski,Paul Naidoo,Krishna Neupane,Silvia Niccolai,Gabriel Niculescu,Thomas O'Connell,Mikhail Osipenko,Michael Paolone,Luciano Pappalardo,Rafayel Paremuzyan,Eugene Pasyuk,William Phelps,Oleg Pogorelko,Yelena Prok,Brian Raue,Marco Ripani,James Ritman,Alessandro Rizzo,Patrizia Rossi,Joseph Rowley,Franck Sabatie,Carlos Salgado,Axel Schmidt,Efrain Segarra,Youri Sharabian,Utsav Shrestha,Orlando Soto Sandoval,Nikolaos Sparveris,Stepan Stepanyan,Igor Strakovski,Steffen Strauch,Adam Thornton,Nicholas Tyler,Richard Tyson,Maurizio Ungaro,Luca Venturelli,Hakob Voskanyan,Eric Voutier,Daniel Watts,Kevin Wei,Xiangdong Wei,Michael Wood,Bradley Yale,Nicholas Zachariou,Jixie Zhang
JLAB number JLAB-PHY-21-3307
LANL number arXiv:2101.04842
Other number DOE/OR/23177-5115
Document Type(s) (Journal Article) 
Associated with EIC: No
Supported by Jefferson Lab LDRD Funding: No
Funding Source: Nuclear Physics (NP)
Other Funding:FG02-96ER41003
 

Journal
Compiled for Physical Review Letters
Publication Abstract: The observation of beam spin asymmetries in two-pion production in semi-inclusive deep inelastic scattering off an unpolarized proton target is reported for the first time. The data presented here were taken in the fall of 2018 with the CLAS12 spectrometer using a 10.6 GeV longitudinally spin-polarized electron beam delivered by CEBAF at JLab. The measured asymmetries provide the first observation of a signal that can be used to extract the PDF $e(x)$ in a collinear framework and the helicity-dependent two-pion fragmentation function $G_1^\perp$.
Experiment Numbers:
Group: Hall B
Document: pdf
DOI:
Accepted Manuscript:
Supporting Documents:
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