# Invariant mass distribution of jet pairs produced in association with a W boson in pp collisions at sqrt[s]=1.96 TeV.

@article{Aaltonen2011InvariantMD, title={Invariant mass distribution of jet pairs produced in association with a W boson in pp collisions at sqrt[s]=1.96 TeV.}, author={T. Aaltonen and B. Alvarez Gonzalez and S. Amerio and D. Amidei and A. Anastassov and A. Annovi and J. Anto{\vs} and G. Apollinari and J. Appel and A. Apresyan and T. Arisawa and A. Artikov and J. Asaadi and W. Ashmanskas and B. Auerbach and A. Aurisano and F. Azfar and W. Badgett and A. Barbaro-Galtieri and V. Barnes and B. Barnett and P. Barria and P. Bartos and M. Bauce and G. Bauer and F. Bedeschi and D. Beecher and S. Behari and G. Bellettini and J. Bellinger and D. Benjamin and A. Beretvas and A. Bhatti and M. Binkley and D. Bisello and I. Bizjak and K. Bland and B. Blumenfeld and A. Bocci and A. Bodek and Daniela Bortoletto and J. Boudreau and A. Boveia and B. Brau and L. Brigliadori and A. Brisuda and C. Bromberg and E. Brucken and M. Bucciantonio and J. Budagov and H. Budd and S. Budd and K. Burkett and G. Busetto and P. Bussey and A. Buzatu and C. Calancha and S. Camarda and M. Campanelli and M. Campbell and F. Canelli and A. Canepa and B. Carls and D. Carlsmith and R. Carosi and S. Carrillo and S. Carron and B. Casal and M. Casarsa and A. Castro and P. Catastini and D. Cauz and V. Cavaliere and M. Cavalli-Sforza and A. Cerri and L. Cerrito and Y. Chen and M. Chertok and G. Chiarelli and G. Chlachidze and F. Chlebana and K. Cho and D. Chokheli and J. Chou and W. Chung and Y. Chung and C. Ciobanu and M. Ciocci and A. Clark and C. Clarke and G. Compostella and M. Convery and J. Conway and M. Corbo and M. Cordelli and C. Cox and D. Cox and F. Crescioli and C. Cuenca Almenar and J. Cuevas and R. Culbertson and D. Dagenhart and N. D’ascenzo and M. Datta and P. de Barbaro and S. De Cecco and G. De Lorenzo and M. Dell'Orso and C. Deluca and L. Demortier and J. Deng and M. Deninno and F. Devoto and M. d'Errico and A. Di Canto and B. Di Ruzza and J. Dittmann and M. D’Onofrio and S. Donati and P. Dong and M. Dorigo and T. Dorigo and K. Ebina and A. Elagin and A. Eppig and R. Erbacher and D. Errede and S. Errede and N. Ershaidat and R. Eusebi and H. Fang and S. Farrington and M. Feindt and J. Fernandez and C. Ferrazza and R. Field and R. Forrest and M. Frank and M. Franklin and J. Freeman and Y. Funakoshi and I. Furic and M. Gallinaro and J. Galyardt and J. Garc{\`i}a and A. Garfinkel and P. Garosi and H. Gerberich and E. Gerchtein and S. Giagu and V. Giakoumopoulou and P. Giannetti and K. Gibson and C. Ginsburg and N. Giokaris and P. Giromini and M. Giunta and G. Giurgiu and V. Glagolev and M. Gold and D. Goldin and N. Goldschmidt and A. Golossanov and G. Gomez and G. Gomez-Ceballos and M. Goncharov and O. Gonz{\~a}lez and I. Gorelov and A. Goshaw and K. Goulianos and S. Grinstein and C. Grosso-Pilcher and R. Group and J. B. Guimar{\~a}es da Costa and Z. Gunay-Unalan and C. Haber and S. Hahn and E. Halkiadakis and A. Hamaguchi and J. Han and F. Happacher and K. Hara and D. Hare and M. Hare and R. Harr and K. Hatakeyama and C. Hays and M. Heck and J. Heinrich and M. Herndon and S. Hewamanage and D. Hidas and A. Hocker and W. Hopkins and D. Horn and S. Hou and R. Hughes and M. Hurwitz and U. Husemann and N. Hussain and M. Hussein and J. Huston and G. Introzzi and M. Iori and A. Ivanov and E. James and D. Jang and B. Jayatilaka and E. Jeon and M. Jha and S. Jindariani and W. Johnson and M. Jones and K. Joo and S. Y. Jun and T. Junk and T. Kamon and P. Karchin and A. Kasmi and Y. Kato and W. Ketchum and J. Keung and V. Khotilovich and B. Kilminster and D. Kim and H. Kim and H. W. Kim and J. Kim and M. Kim and S. Kim and Y. Kim and N. Kimura and M. Kirby and S. Klimenko and K. Kondo and D. Kong and J. Konigsberg and A. Kotwal and M. Kreps and D. Krop and N. Krumnack and M. Kruse and V. Krutelyov and T. Kuhr and M. Kurata and S. Kwang and A. Laasanen and S. Lami and M. Lancaster and R. Lander and K. Lannon and A. Lath and G. Latino and T. LeCompte and E. Lee and H. Lee and J. Lee and S. Lee and S. Leo and S. Leone and J. Lewis and A. Limosani and C. Lin and J. Linacre and M. Lindgren and E. Lipeles and A. Lister and D. Litvintsev and C. Liu and Q. Liu and T. Liu and S. Lockwitz and N. Lockyer and A. Loginov and D. Lucchesi and J. Lueck and P. Lujan and P. Lukens and G. Lungu and J. Lys and R. Lysak and R. Madrak and K. Maeshima and K. Makhoul and P. Maksimovic and S. Malik and G. Manca and A. Manousakis-katsikakis and F. Margaroli and C. Marino and M. Mart{\'i}nez and R. Martinez-Ballarin and P. Mastrandrea and M. Mathis and M. Mattson and P. Mazzanti and K. Mcfarland and P. McIntyre and R. McNulty and A. Mehta and P. Mehtala and A. Menzione and C. Mesropian and T. Miao and D. Mietlicki and A. Mitra and H. Miyake and S. Moed and N. Moggi and M. Mondragon and C. Moon and R. Moore and M. Morello and J. Morlock and P. M. Movilla Fern{\'a}ndez and A. Mukherjee and T. Muller and M. Mussini and J. Nachtman and Y. Nagai and J. Naganoma and I. Nakano and A. Napier and J. Nett and C. Neu and M. Neubauer and J. Nielsen and L. Nodulman and O. Norniella and E. Nurse and L. Oakes and S. Oh and Y. Oh and I. Oksuzian and T. Okusawa and R. Orava and L. Ortolan and S. Pagan Griso and C. Pagliarone and E. Palencia and V. Papadimitriou and A. Paramonov and J. Patrick and G. Pauletta and M. Paulini and C. Paus and D. Pellett and A. Penzo and T. Phillips and G. Piacentino and E. Pianori and J. Pilot and K. Pitts and C. Plager and L. Pondrom and K. Potamianos and O. Poukhov and F. Prokoshin and F. Ptohos and E. Pueschel and G. Punzi and J. Pursley and A. Rahaman and V. Ramakrishnan and N. Ranjan and I. Redondo and M. Rescigno and F. Rimondi and L. Ristori and T. Rodrigo and T. Rodriguez and E. Rogers and S. Rolli and R. Roser and M. Rossi and F. Rubbo and F. Ruffini and A. Ruiz and J. Russ and A. Safonov and W. Sakumoto and Y. Sakurai and L. Santi and L. Sartori and K. Sato and V. Saveliev and A. Savoy-Navarro and P. Schlabach and A. Schmidt and E. E. Schmidt and M. Schmidt and M. Schmitt and T. Schwarz and L. Scodellaro and A. Scribano and F. Scuri and A. Sedov and S. Seidel and Y. Seiya and A. Semenov and F. Sforza and A. Sfyrla and S. Shalhout and T. Shears and P. Shepard and M. Shimojima and S. Shiraishi and M. Shochet and I. Shreyber and A. Simonenko and Nicolas Produit and A. Sissakian and K. Sliwa and J. Smith and F. Snider and A. Soha and S. Somalwar and V. Sorin and P. Squillacioti and M. Stancari and M. Stanitzki and R. S. St. Denis and B. Stelzer and O. Stelzer-Chilton and D. Stentz and J. Strologas and G. Strycker and Y. Sudo and A. Sukhanov and I. Suslov and K. Takemasa and Y. Takeuchi and J. Tang and M. Tecchio and P. Teng and J. Thom and J. Thome and G. Thompson and E. Thomson and P. Ttito-Guzm'an and S. Tkaczyk and D. Toback and S. Tok{\'a}r and K. Tollefson and T. Tomura and D. Tonelli and S. Torre and D. Torretta and P. Totaro and M. Trovato and Y. Tu and F. Ukegawa and S. Uozumi and A. Varganov and F. Vazquez and G. Velev and C. Vellidis and M. Vidal and I. Vila and R. Vilar and J. Viz{\'a}n and M. Vogel and G. Volpi and P. Wagner and R. Wagner and T. Wakisaka and R. Wallny and S. M. Wang and A. Warburton and D. Waters and M. Weinberger and W. Wester and B. Whitehouse and D. Whiteson and A. Wicklund and E. Wicklund and S. Wilbur and F. Wick and H. Williams and J. Wilson and P. Wilson and B. Winer and P. Wittich and S. Wolbers and H. Wolfe and T. Wright and X. Wu and Z. Wu and K. Yamamoto and J. Yamaoka and T. Yang and U. Yang and Y. Yang and W. Yao and G. Yeh and K. Yi and J. Yoh and K. Yorita and T. Yoshida}, journal={Physical review letters}, year={2011}, volume={106 17}, pages={ 171801 } }

We report a study of the invariant mass distribution of jet pairs produced in association with a W boson using data collected with the CDF detector which correspond to an integrated luminosity of 4.3 fb(-1). The observed distribution has an excess in the 120-160 GeV/c(2) mass range which is not described by current theoretical predictions within the statistical and systematic uncertainties. In this Letter, we report studies of the properties of this excess.

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Invariant mass distribution of jet pairs produced in association with a W boson in pp collisions at sqrt[s]=1.96 TeV.

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#### 94 Citations

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