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Title Beam spin asymmetry in semi-inclusive electroproduction of a hadron pair
Authors Marco Mirazita,Harutyun Avagyan,Aurore Courtoy,Silvia Pisano,Shankar Adhikari,Moskov Amaryan,Giovanni Angelini,Hamza Atac,Nathan Baltzell,Luca Barion,Marco Battaglieri,Ivan Bedlinskiy,Fatiha Benmokhtar,Andrea Bianconi,Angela Biselli,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,Volker Crede,Annalisa D'Angelo,Natalya Dashyan,Raffaella De Vita,Maxime Defurne,Alexandre Deur,Stefan Diehl,Christopher Dilks,Chaden Djalali,Raphael Dupre,Hovanes Egiyan,Mathieu Ehrhart,Ahmed El Alaoui,Lamiaa El Fassi,Paul Eugenio,Stuart Fegan,Robert Fersch,Alessandra Filippi,Tony Forest,Yeranuhi Ghandilyan,Gagik Gavalian,Gerard Gilfoyle,Kevin Giovanetti,Francois-Xavier Girod-Gard,Derek Glazier,Evgeny Golovach,Ralf Gothe,Keith Griffioen,Michel Guidal,Lei Guo,Kawtar Hafidi,Hayk Hakobyan,Mohammad Hattawy,Timothy Hayward,David Heddle,Kenneth Hicks,Adam Hobart,Maurik Holtrop,Qinhua Huang,Yordanka Ilieva,David Ireland,Boris Ishkhanov,Evgeny Isupov,David Jenkins,Hyon-Suk Jo,Kyungseon Joo,Dustin Keller,Achyut Khanal,Mahbubul Khandaker,Chan Kim,Wooyoung Kim,Franz Klein,Valery Kubarovsky,Sebastian Kuhn,Lucilla Lanza,Marco Leali,Paolo Lenisa,Kenneth Livingston,Ian MacGregor,Dominique Marchand,Nikolay Markov,Luca Marsicano,Valerio Mascagna,Bryan McKinnon,Richard Milner,Taisiya Mineeva,Viktor Mokeev,Christopher Mullen,Carlos Munoz Camacho,Krishna Neupane,Gabriel Niculescu,Thomas O'Connell,Mikhail Osipenko,Michael Paolone,Luciano Pappalardo,Rafayel Paremuzyan,K. Park,Eugene Pasyuk,William Phelps,Dinko Pocanic,Oleg Pogorelko,Jiwan Poudel,Yelena Prok,Brian Raue,Marco Ripani,James Ritman,Alessandro Rizzo,Patrizia Rossi,Franck Sabatie,Carlos Salgado,Axel Schmidt,Reinhard Schumacher,Youri Sharabian,Utsav Shrestha,Orlando Soto Sandoval,Nikolaos Sparveris,Stepan Stepanyan,Igor Strakovski,Steffen Strauch,Nicholas Tyler,Maurizio Ungaro,Luca Venturelli,Hakob Voskanyan,Anselm Vossen,Eric Voutier,Daniel Watts,Kevin Wei,Xiangdong Wei,Michael Wood,Bradley Yale,Nicholas Zachariou,J. Zhang,zhiwen zhao
JLAB number JLAB-PHY-20-3277
LANL number arXiv:2010.09544
Other number DOE/OR/23177-5066
Document Type(s) (Journal Article) 
Associated with EIC: No
Supported by Jefferson Lab LDRD Funding: No
Funding Source: Nuclear Physics (NP)
 

Journal
Compiled for Physical Review Letters
Volume 126
Page(s) 062002
Refereed
Publication Abstract: A first measurement of the longitudinal beam spin asymmetry ALU in the semi-inclusive electroproduction of pairs of charged pions is reported. ALU is a higher-twist observable and offers the cleanest access to the nucleon twist-3 parton distribution function e(x). Data have been collected in the Hall-B at Jefferson Lab by impinging a 5.498 GeV electron beam on a liquid-hydrogen target, and reconstructing the scattered electron and the pion pair with the CLAS detector. One-dimensional projections of the sin(phiR) moments of ALU are extracted for the kinematic variables of interest in the valence quark region. The understanding of di-hadron production is essential for the interpretation of observables in single hadron production in semi-inclusive DIS, and pioneering measurements of single spin asymmetries in di-hadron production open a new avenue in studies of QCD dynamics.
Experiment Numbers:
Group: Hall B
Document: pdf
DOI: https://doi.org/10.1103/PhysRevLett.126.062002
Accepted Manuscript: PhysRevLett.126.062002.pdf
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Supporting Datasets: