First observation and branching fraction measurement of the $$ {\Lambda}_b^0\to {D}_s^{-}p $$ decay

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Aaij, R, Abdelmotteleb, ASW, Abellan Beteta, C, Abudinén, F, Ackernley, T, Adeva, B, Adinolfi, M, Adlarson, P, Afsharnia, H, Agapopoulou, C et al (show 1054 more authors) , Aidala, CA, Ajaltouni, Z, Akar, S, Akiba, K, Albicocco, P, Albrecht, J, Alessio, F, Alexander, M, Alfonso Albero, A, Aliouche, Z, Alvarez Cartelle, P, Amalric, R, Amato, S, Amey, JL, Amhis, Y, An, L, Anderlini, L, Andersson, M, Andreianov, A, Andreotti, M, Andreou, D, Ao, D, Archilli, F, Artamonov, A, Artuso, M, Aslanides, E, Atzeni, M, Audurier, B, Bachiller Perea, IB, Bachmann, S, Bachmayer, M, Back, JJ, Bailly-reyre, A, Baladron Rodriguez, P, Balagura, V, Baldini, W, Baptista de Souza Leite, J, Barbetti, M, Barlow, RJ, Barsuk, S, Barter, W, Bartolini, M, Baryshnikov, F, Basels, JM, Bassi, G, Batsukh, B, Battig, A, Bay, A, Beck, A, Becker, M, Bedeschi, F, Bediaga, IB, Beiter, A, Belin, S, Bellee, V, Belous, K, Belov, I, Belyaev, I, Benane, G, Bencivenni, G, Ben-Haim, E, Berezhnoy, A, Bernet, R, Bernet Andres, S, Berninghoff, D, Bernstein, HC, Bertella, C, Bertolin, A, Betancourt, C, Betti, F, Bezshyiko, Ia, Bhasin, S, Bhom, J, Bian, L, Bieker, MS, Biesuz, NV, Billoir, P, Biolchini, A, Birch, M, Bishop, FCR, Bitadze, A, Bizzeti, A, Blago, MP, Blake, T, Blanc, F, Blank, JE, Blusk, S, Bobulska, D, Boelhauve, JA, Boente Garcia, O, Boettcher, T, Boldyrev, A, Bolognani, CS, Bolzonella, R, Bondar, N, Borgato, F, Borghi, S, Borsato, M, Borsuk, JT, Bouchiba, SA, Bowcock, TJV ORCID: 0000-0002-3505-6915, Boyer, A, Bozzi, C, Bradley, MJ, Braun, S, Brea Rodriguez, A, Brodzicka, J, Brossa Gonzalo, A, Brown, J, Brundu, D, Buonaura, A, Buonincontri, L, Burke, AT ORCID: 0000-0003-0243-0517, Burr, C, Bursche, A, Butkevich, A, Butter, JS, Buytaert, J, Byczynski, W, Cadeddu, S, Cai, H, Calabrese, R, Calefice, L, Cali, S, Calvi, M, Calvo Gomez, M, Campana, P, Campora Perez, DH, Campoverde Quezada, AF, Capelli, S, Capriotti, L, Carbone, A, Cardinale, R, Cardini, A, Carniti, P, Carus, L, Casais Vidal, A, Caspary, R, Casse, G ORCID: 0000-0002-8516-237X, Cattaneo, M, Cavallero, G, Cavallini, V, Celani, S, Cerasoli, J, Cervenkov, D, Chadwick, AJ, Chahrour, I, Chapman, MG, Charles, M, Charpentier, Ph, Chavez Barajas, CA, Chefdeville, M, Chen, C, Chen, S, Chernov, A, Chernyshenko, S, Chobanova, V, Cholak, S, Chrzaszcz, M, Chubykin, A, Chulikov, V, Ciambrone, P, Cicala, MF, Cid Vidal, X, Ciezarek, G, Cifra, P, Ciullo, G, Clarke, PEL, Clemencic, M, Cliff, HV, Closier, J, Cobbledick, JL, Coco, V, Coelho, JAB, Cogan, J, Cogneras, E, Cojocariu, L, Collins, P, Colombo, T, Congedo, L, Contu, A, Cooke, N, Corredoira, I, Corti, G, Couturier, B, Craik, DC, Cruz Torres, M, Currie, R, Da Silva, CL, Dadabaev, S, Dai, L, Dai, X, Dall’Occo, E, Dalseno, J, D’Ambrosio, C, Daniel, J, Danilina, A, d’Argent, P, Davies, JE, Davis, A, De Aguiar Francisco, O, de Boer, J, De Bruyn, K, De Capua, S, De Cian, M, De Freitas Carneiro Da Graca, U, De Lucia, E, De Miranda, JM, De Paula, L, De Serio, M, De Simone, D, De Simone, P, De 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Günther, PA, Gushchin, E, Guth, A, Guz, Y, Gys, T, Hadavizadeh, T, Hadjivasiliou, C, Haefeli, G, Haen, C, Haimberger, J, Haines, SC, Halewood-leagas, T, Halvorsen, MM, Hamilton, PM, Hammerich, J ORCID: 0000-0002-5556-1775, Han, Q, Han, X, Hansen, EB, Hansmann-Menzemer, S, Hao, L, Harnew, N, Harrison, T, Hasse, C, Hatch, M, He, J, Heijhoff, K, Hemmer, FH, Henderson, C, Henderson, RDL, Hennequin, AM, Hennessy, K ORCID: 0000-0002-1529-8087, Henry, L, Herd, J, Heuel, J, Hicheur, A, Hill, D, Hilton, M, Hollitt, SE, Horswill, J, Hou, R, Hou, Y, Hu, J, Hu, J, Hu, W, Hu, X, Huang, W, Huang, X, Hulsbergen, W, Hunter, RJ, Hushchyn, M, Hutchcroft, D ORCID: 0000-0002-4174-6509, Ibis, P, Idzik, M, Ilin, D, Ilten, P, Inglessi, A, Iniukhin, A, Ishteev, A, Ivshin, K, Jacobsson, R, Jage, H, Jaimes Elles, SJ, Jakobsen, S, Jans, E, Jashal, BK, Jawahery, A, Jevtic, V, Jiang, E, Jiang, X, Jiang, Y, John, M, Johnson, D, Jones, CR, Jones, TP, Jost, B, Jurik, N, Juszczak, I, Kandybei, S, Kang, Y, Karacson, M, 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Liu, Q, Liu, S, Lobo Salvia, A, Loi, A, Lollini, R, Lomba Castro, J, Longstaff, I, Lopes, JH, Lopez Huertas, A, López Soliño, S, Lovell, GH, Lu, Y, Lucarelli, C, Lucchesi, D, Luchuk, S, Lucio Martinez, M, Lukashenko, V, Luo, Y, Lupato, A, Luppi, E, Lusiani, A, Lynch, K, Lyu, X-R, Ma, R, Maccolini, S, Machefert, F, Maciuc, F, Mackay, I, Macko, V, Madhan Mohan, LR, Maevskiy, A, Maisuzenko, D, Majewski, MW, Malczewski, JJ, Malde, S, Malecki, B, Malinin, A, Maltsev, T, Manca, G, Mancinelli, G, Mancuso, C, Manera Escalero, R, Manuzzi, D, Manzari, CA, Marangotto, D, Marchand, JF, Marconi, U, Mariani, S, Marin Benito, C, Marks, J, Marshall, AM, Marshall, PJ, Martelli, G, Martellotti, G, Martinazzoli, L, Martinelli, M, Martinez Santos, D, Martinez Vidal, F, Massafferri, A, Materok, M, Matev, R, Mathad, A, Matiunin, V, Matteuzzi, C, Mattioli, KR, Mauri, A, Maurice, E, Mauricio, J, Mazurek, M, McCann, M, Mcconnell, L, McGrath, TH, McHugh, NT, McNab, A, McNulty, R, Mead, JV, Meadows, B, Meier, G, 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Panshin, G, Paolucci, L, Papanestis, A, Pappagallo, M, Pappalardo, LL, Pappenheimer, C, Parker, W, Parkes, C, Passalacqua, B, Passaleva, G, Pastore, A, Patel, M, Patrignani, C, Pawley, CJ, Pellegrino, A, Pepe Altarelli, M, Perazzini, S, Pereima, D, Pereiro Castro, A, Perret, P, Petridis, K, Petrolini, A, Petrov, A, Petrucci, S, Petruzzo, M, Pham, H, Philippov, A, Piandani, R, Pica, L, Piccini, M, Pietrzyk, B, Pietrzyk, G, Pili, M, Pinci, D, Pisani, F, Pizzichemi, M, Placinta, V, Plews, J, Plo Casasus, M, Polci, F, Poli Lener, M, Poluektov, A, Polukhina, N, Polyakov, I, Polycarpo, E, Ponce, S, Popov, D, Poslavskii, S, Prasanth, K, Promberger, L, Prouve, C, Pugatch, V, Puill, V, Punzi, G, Qi, HR, Qian, W, Qin, N, Qu, S, Quagliani, R, Raab, NV, Rachwal, B, Rademacker, JH, Rajagopalan, R, Rama, M, Ramos Pernas, M, Rangel, MS, Ratnikov, F, Raven, G, Rebollo De Miguel, M, Redi, F, Reich, J, Reiss, F, Remon Alepuz, C, Ren, Z, Resmi, PK, Ribatti, R, Ricci, AM, Ricciardi, S, Richardson, K, Richardson-Slipper, M, Rinnert, K, Robbe, P, Robertson, G, Rodrigues, AB, Rodrigues, E, Rodriguez Fernandez, E, Rodriguez Lopez, JA, Rodriguez Rodriguez, E, Rolf, DL, Rollings, A, Roloff, P, Romanovskiy, V, Romero Lamas, M, Romero Vidal, A, Roth, JD, Rotondo, M, Rudolph, MS, Ruf, T, Ruiz Fernandez, RA, Ruiz Vidal, J, Ryzhikov, A, Ryzka, J, Saborido Silva, JJ, Sagidova, N, Sahoo, N, Saitta, B, Salomoni, M, Sanchez Gras, C, Sanderswood, I, Santacesaria, R, Santamarina Rios, C, Santimaria, M, Santovetti, E, Saranin, D, Sarpis, G, Sarpis, M, Sarti, A, Satriano, C, Satta, A, Saur, M, Savrina, D, Sazak, H, Scantlebury Smead, LG, Scarabotto, A, Schael, S, Scherl, S ORCID: 0000-0003-0528-2724, Schiller, M, Schindler, H, Schmelling, M, Schmidt, B, Schmitt, S, Schneider, O, Schopper, A, Schubiger, M, Schulte, S, Schune, MH, Schwemmer, R, Sciascia, B, Sciuccati, A, Sellam, S, Semennikov, A, Senghi Soares, M, Sergi, A, Serra, N, Sestini, L, Seuthe, A, Shang, Y, Shangase, DM, Shapkin, M, Shchemerov, I, Shchutska, L, Shears, T ORCID: 0000-0002-2653-1366, Shekhtman, L, Shen, Z, Sheng, S, Shevchenko, V, Shi, B, Shields, EB, Shimizu, Y, Shmanin, E, Shorkin, R, Shupperd, JD, Siddi, BG, Silva Coutinho, R, Simi, G, Simone, S, Singla, M, Skidmore, N, Skuza, R, Skwarnicki, T, Slater, MW, Smallwood, JC, Smeaton, JG, Smith, E, Smith, K, Smith, M, Snoch, A, Soares Lavra, L, Sokoloff, MD, Soler, FJP, Solomin, A, Solovev, A, Solovyev, I, Song, R, Souza De Almeida, FL, Souza De Paula, B, Spaan, B, Spadaro Norella, E, Spedicato, E, Spiridenkov, E, Spradlin, P, Sriskaran, V, Stagni, F, Stahl, M, Stahl, S, Stanislaus, S, Stein, EN, Steinkamp, O, Stenyakin, O, Stevens, H, Stone, S, Strekalina, D, Su, YS, Suljik, F, Sun, J, Sun, L, Sun, Y, Svihra, P, Swallow, PN, Swientek, K, Szabelski, A, Szumlak, T, Szymanski, M, Tan, Y, Taneja, S, Tat, MD, Terentev, A, Teubert, F, Thomas, E, Thompson, DJD, Thomson, KA, Tilquin, H, Tisserand, V, T’Jampens, S, Tobin, M, Tomassetti, L, Tonani, G, Tong, X, 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Wotton, SA, Wu, H, Wu, J, Wyllie, K, Xiang, Z, Xie, Y, Xu, A, Xu, J, Xu, L, Xu, L, Xu, M, Xu, Q, Xu, Z, Xu, Z, Yang, D, Yang, S, Yang, X, Yang, Y, Yang, Z, Yang, Z, Yeomans, LE, Yeroshenko, V, Yeung, H, Yin, H, Yu, J, Yuan, X, Zaffaroni, E, Zavertyaev, M, Zdybal, M, Zeng, M, Zhang, C, Zhang, D, Zhang, L, Zhang, S, Zhang, S, Zhang, Y, Zhang, Y, Zhao, Y, Zharkova, A, Zhelezov, A, Zheng, Y, Zhou, T, Zhou, X, Zhou, Y, Zhovkovska, V, Zhu, X, Zhu, X, Zhu, Z, Zhukov, V, Zou, Q, Zucchelli, S, Zuliani, D and Zunica, G (2023) First observation and branching fraction measurement of the $$ {\Lambda}_b^0\to {D}_s^{-}p $$ decay. Journal of High Energy Physics, 2023 (7). 75-. ISSN 1126-6708, 1029-8479

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Abstract

<jats:title>A<jats:sc>bstract</jats:sc> </jats:title><jats:p>The first observation of the <jats:inline-formula><jats:alternatives><jats:tex-math>$$ {\Lambda}_b^0\to {D}_s^{-}p $$</jats:tex-math><mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:msubsup> <mml:mi>Λ</mml:mi> <mml:mi>b</mml:mi> <mml:mn>0</mml:mn> </mml:msubsup> <mml:mo>→</mml:mo> <mml:msubsup> <mml:mi>D</mml:mi> <mml:mi>s</mml:mi> <mml:mo>−</mml:mo> </mml:msubsup> <mml:mi>p</mml:mi> </mml:math></jats:alternatives></jats:inline-formula> decay is presented using proton-proton collision data collected by the LHCb experiment at a centre-of-mass energy of <jats:inline-formula><jats:alternatives><jats:tex-math>$$ \sqrt{s} $$</jats:tex-math><mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:msqrt> <mml:mi>s</mml:mi> </mml:msqrt> </mml:math></jats:alternatives></jats:inline-formula> = 13 TeV, corresponding to a total integrated luminosity of 6 fb<jats:sup><jats:italic>−</jats:italic>1</jats:sup>. Using the <jats:inline-formula><jats:alternatives><jats:tex-math>$$ {\Lambda}_b^0\to {\Lambda}_c^{+}{\pi}^{-} $$</jats:tex-math><mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:msubsup> <mml:mi>Λ</mml:mi> <mml:mi>b</mml:mi> <mml:mn>0</mml:mn> </mml:msubsup> <mml:mo>→</mml:mo> <mml:msubsup> <mml:mi>Λ</mml:mi> <mml:mi>c</mml:mi> <mml:mo>+</mml:mo> </mml:msubsup> <mml:msup> <mml:mi>π</mml:mi> <mml:mo>−</mml:mo> </mml:msup> </mml:math></jats:alternatives></jats:inline-formula> decay as the normalisation mode, the branching fraction of the <jats:inline-formula><jats:alternatives><jats:tex-math>$$ {\Lambda}_b^0\to {D}_s^{-}p $$</jats:tex-math><mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:msubsup> <mml:mi>Λ</mml:mi> <mml:mi>b</mml:mi> <mml:mn>0</mml:mn> </mml:msubsup> <mml:mo>→</mml:mo> <mml:msubsup> <mml:mi>D</mml:mi> <mml:mi>s</mml:mi> <mml:mo>−</mml:mo> </mml:msubsup> <mml:mi>p</mml:mi> </mml:math></jats:alternatives></jats:inline-formula> decay is measured to be <jats:inline-formula><jats:alternatives><jats:tex-math>$$ \mathcal{B}\left({\Lambda}_b^0\to {D}_s^{-}p\right)=\left(12.6\pm 0.5\pm 0.3\pm 1.2\right)\times {10}^{-6} $$</jats:tex-math><mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:mi>B</mml:mi> <mml:mfenced> <mml:mrow> <mml:msubsup> <mml:mi>Λ</mml:mi> <mml:mi>b</mml:mi> <mml:mn>0</mml:mn> </mml:msubsup> <mml:mo>→</mml:mo> <mml:msubsup> <mml:mi>D</mml:mi> <mml:mi>s</mml:mi> <mml:mo>−</mml:mo> </mml:msubsup> <mml:mi>p</mml:mi> </mml:mrow> </mml:mfenced> <mml:mo>=</mml:mo> <mml:mfenced> <mml:mrow> <mml:mn>12.6</mml:mn> <mml:mo>±</mml:mo> <mml:mn>0.5</mml:mn> <mml:mo>±</mml:mo> <mml:mn>0.3</mml:mn> <mml:mo>±</mml:mo> <mml:mn>1.2</mml:mn> </mml:mrow> </mml:mfenced> <mml:mo>×</mml:mo> <mml:msup> <mml:mn>10</mml:mn> <mml:mrow> <mml:mo>−</mml:mo> <mml:mn>6</mml:mn> </mml:mrow> </mml:msup> </mml:math></jats:alternatives></jats:inline-formula>, where the first uncertainty is statistical, the second systematic and the third due to uncertainties in the branching fractions of the <jats:inline-formula><jats:alternatives><jats:tex-math>$$ {\Lambda}_b^0\to {\Lambda}_c^{+}{\pi}^{-} $$</jats:tex-math><mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:msubsup> <mml:mi>Λ</mml:mi> <mml:mi>b</mml:mi> <mml:mn>0</mml:mn> </mml:msubsup> <mml:mo>→</mml:mo> <mml:msubsup> <mml:mi>Λ</mml:mi> <mml:mi>c</mml:mi> <mml:mo>+</mml:mo> </mml:msubsup> <mml:msup> <mml:mi>π</mml:mi> <mml:mo>−</mml:mo> </mml:msup> </mml:math></jats:alternatives></jats:inline-formula>, <jats:inline-formula><jats:alternatives><jats:tex-math>$$ {D}_s^{-}\to {K}^{-}{K}^{+}{\pi}^{-} $$</jats:tex-math><mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:msubsup> <mml:mi>D</mml:mi> <mml:mi>s</mml:mi> <mml:mo>−</mml:mo> </mml:msubsup> <mml:mo>→</mml:mo> <mml:msup> <mml:mi>K</mml:mi> <mml:mo>−</mml:mo> </mml:msup> <mml:msup> <mml:mi>K</mml:mi> <mml:mo>+</mml:mo> </mml:msup> <mml:msup> <mml:mi>π</mml:mi> <mml:mo>−</mml:mo> </mml:msup> </mml:math></jats:alternatives></jats:inline-formula> and <jats:inline-formula><jats:alternatives><jats:tex-math>$$ {\Lambda}_c^{+}\to p{K}^{-}{\pi}^{+} $$</jats:tex-math><mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:msubsup> <mml:mi>Λ</mml:mi> <mml:mi>c</mml:mi> <mml:mo>+</mml:mo> </mml:msubsup> <mml:mo>→</mml:mo> <mml:mi>p</mml:mi> <mml:msup> <mml:mi>K</mml:mi> <mml:mo>−</mml:mo> </mml:msup> <mml:msup> <mml:mi>π</mml:mi> <mml:mo>+</mml:mo> </mml:msup> </mml:math></jats:alternatives></jats:inline-formula> decays.</jats:p>

Item Type:	Article
Uncontrolled Keywords:	4902 Mathematical Physics, 5107 Particle and High Energy Physics, 49 Mathematical Sciences, 51 Physical Sciences, Down Syndrome, Brain Disorders, Intellectual and Developmental Disabilities (IDD)
Divisions:	Faculty of Science and Engineering > School of Physical Sciences
Depositing User:	Symplectic Admin
Date Deposited:	18 Sep 2023 08:02
Last Modified:	30 Jan 2025 22:44
DOI:	10.1007/jhep07(2023)075
Open Access URL:	https://link.springer.com/content/pdf/10.1007/JHEP...
Related Websites:	Publisher
URI:	https://livrepository.liverpool.ac.uk/id/eprint/3172816